CN108683621A

CN108683621A - Doppler correction method and device

Info

Publication number: CN108683621A
Application number: CN201810272427.5A
Authority: CN
Inventors: 张彤
Original assignee: Xi'an Bee Language Mdt Infotech Ltd
Current assignee: Xi'an Bee Language Mdt Infotech Ltd
Priority date: 2018-03-29
Filing date: 2018-03-29
Publication date: 2018-10-19
Anticipated expiration: 2038-03-29
Also published as: CN108683621B

Abstract

The disclosure is directed to a kind of Doppler correction method and devices.This method includes：Obtain the transmission terminal current the first movement velocity and first position；Reference information is generated according to first movement velocity, the first position and effective information to be sent；The reference information is sent to reception terminal, in order to which the reception terminal carries out Doppler correction when demodulating the effective information according to first movement velocity and the first position.In the technical solution, reception terminal can be sent to by the first movement velocity of the first position being currently located and current kinetic by sending terminal, Doppler correction is carried out according to first movement velocity and the first position when demodulating effective information convenient for receiving terminal, the effect of effective information demodulation is improved, and then improves the accuracy rate for obtaining effective information.

Description

Doppler correction method and device

Technical field

This disclosure relates to signal processing technology field more particularly to a kind of Doppler correction method and device.

Background technology

When there are being carried out wireless communication between two terminals of relative motion, due to the influence of relative motion, two ends The signal of communication transmitted between end will appear Doppler frequency shift.

Specifically, if two terminals are close to each other, the signal of communication that reception terminal receives can be due to Doppler effect The case where there is wavelength and shortens in influence, and frequency increases；If two terminals are located remotely from each other, the signal of communication meeting that terminal receives is received Since there is the case where wavelength is elongated, and frequency reduces in the influence of Doppler effect.Both of which can lead to communication efficiency not It is good, therefore need to be corrected the Doppler frequency shift when being communicated.

Invention content

To overcome the problems, such as that Doppler frequency shift present in the relevant technologies, the embodiment of the present disclosure provide a kind of Doppler frequency shift Bearing calibration and device.The technical solution is as follows：

According to the first aspect of the embodiments of the present disclosure, a kind of Doppler correction method is provided, is applied to send terminal, Including：

Obtain the transmission terminal current the first movement velocity and first position；

Reference information is generated according to first movement velocity, the first position and effective information to be sent；

The reference information is sent to reception terminal, in order to the reception terminal when demodulating the effective information root Doppler correction is carried out according to first movement velocity and the first position.

The technical scheme provided by this disclosed embodiment can include the following benefits：Sending terminal can be by current institute First position and the first movement velocity of current kinetic be sent to reception terminal, convenient for receiving terminal in demodulation effective information When Doppler correction carried out according to first movement velocity and the first position, improve the effect of effective information demodulation, And then improve the accuracy rate for obtaining effective information.

In one embodiment, described according to first movement velocity, the first position and effective letter to be sent Breath generates reference information：

When first movement velocity is greater than or equal to First Speed threshold value, according to first movement velocity, described First position and effective information to be sent generate reference information.

In one embodiment, the method further includes：

According to the reference frequency of work at present, the corresponding First Speed threshold value of the reference frequency is obtained.

According to the second aspect of the embodiment of the present disclosure, a kind of Doppler correction method is provided, is applied to receive terminal, Including：

It receives and sends the reference information that terminal is sent, the reference information includes that effective information, the transmission terminal are current The first movement velocity and described send the first position that is currently located of terminal；

When demodulating the effective information, Doppler frequency shift is carried out according to first movement velocity and the first position Correction.

The technical scheme provided by this disclosed embodiment can include the following benefits：Terminal is received in demodulation effectively letter When breath, Doppler correction can be carried out according to the first movement velocity of the first position and its current kinetic that send terminal, The effect of effective information demodulation is improved, and then improves the accuracy rate for obtaining effective information.

In one embodiment, described when demodulating the effective information, according to first movement velocity and described One position carries out Doppler correction：

The first Doppler frequency shift of the reference information is obtained according to first movement velocity；

It is determined and the position relationship variation tendency for sending terminal according to the first position；

When demodulating the effective information, according to the position relationship variation tendency using first Doppler frequency shift into Row correction.

In one embodiment, the first Doppler frequency that the reference information is obtained according to first movement velocity Shifting includes：

Obtain the second current movement velocity of the reception terminal；

When second movement velocity is less than second speed threshold value, the reference is obtained according to first movement velocity First Doppler frequency shift of information.

When first movement velocity is greater than or equal to third speed threshold value, institute is obtained according to first movement velocity State the first Doppler frequency shift of reference information.

In one embodiment, described when demodulating the effective information, it is used according to the position relationship variation tendency First Doppler frequency shift be corrected including：

If determining that the reception terminal and the transmission terminal are close to each other according to the position relationship variation tendency, solving When adjusting the effective information, negative value is taken to be corrected using first Doppler frequency shift.

If determining that the reception terminal is located remotely from each other with the transmission terminal according to the position relationship variation tendency, solving When adjusting the effective information, positive value is taken to be corrected using first Doppler frequency shift.

Obtain the second current movement velocity of the reception terminal；

When second movement velocity be greater than or equal to the second speed threshold value when, according to the first position determine with The position relationship variation tendency for sending terminal；

When demodulating the effective information, according to the position relationship variation tendency, second movement velocity and described First movement velocity carries out Doppler correction.

In one embodiment, described when demodulating the effective information, according to the position relationship variation tendency, described Second movement velocity and first movement velocity carry out Doppler correction：

If determining that the reception terminal and the transmission terminal are close to each other according to the position relationship variation tendency, according to The second Doppler frequency shift that the reference information is obtained with value of second movement velocity and first movement velocity；

When demodulating the effective information, negative value is taken to be corrected using second Doppler frequency shift.

If determining that the reception terminal is located remotely from each other with the transmission terminal according to the position relationship variation tendency, according to The difference of second movement velocity and first movement velocity obtains the third Doppler frequency shift of the reference information；

When demodulating the effective information, positive value is taken to be corrected using the third Doppler frequency shift.

According to the third aspect of the embodiment of the present disclosure, a kind of Doppler correction device is provided, including：

First acquisition module, first movement velocity and first position current for obtaining the transmission terminal；

Generation module, for being generated according to first movement velocity, the first position and effective information to be sent Reference information；

Sending module, for the reference information to be sent to reception terminal, in order to which the reception terminal is in demodulation institute Doppler correction is carried out according to first movement velocity and the first position when stating effective information.

In one embodiment, the generation module includes：

Submodule is generated, for when first movement velocity is greater than or equal to First Speed threshold value, according to described the One movement velocity, the first position and effective information to be sent generate reference information.

In one embodiment, described device further includes：

Second acquisition module, for according to the reference frequency of work at present, obtaining the reference frequency corresponding described the One threshold speed.

According to the fourth aspect of the embodiment of the present disclosure, a kind of Doppler correction device is provided, including：

Receiving module, for receiving the reference information for sending terminal transmission, the reference information includes effective information, described Send the first current movement velocity of terminal and the first position for sending terminal and being currently located；

Correction module is used for when demodulating the effective information, according to first movement velocity and the first position Carry out Doppler correction.

In one embodiment, the correction module includes：

First acquisition submodule, the first Doppler frequency for obtaining the reference information according to first movement velocity It moves；

First determining module, for determining to become with the position relationship variation for sending terminal according to the first position Gesture；

First correction module, for when demodulating the effective information, being used according to the position relationship variation tendency First Doppler frequency shift is corrected.

In one embodiment, first acquisition submodule includes：

First acquisition unit, second movement velocity current for obtaining the reception terminal；

Second acquisition unit, for when second movement velocity is less than second speed threshold value, being transported according to described first Dynamic speed obtains the first Doppler frequency shift of the reference information.

In one embodiment, first acquisition submodule includes：

Third acquiring unit is used for when first movement velocity is greater than or equal to third speed threshold value, according to described First movement velocity obtains the first Doppler frequency shift of the reference information.

In one embodiment, first correction module includes：

First correction unit, if for determining the reception terminal and the transmission according to the position relationship variation tendency Terminal is close to each other, when demodulating the effective information, takes negative value to be corrected using first Doppler frequency shift.

In one embodiment, first correction module includes：

Second correction unit, if for determining the reception terminal and the transmission according to the position relationship variation tendency Terminal is located remotely from each other, and when demodulating the effective information, takes positive value to be corrected using first Doppler frequency shift.

In one embodiment, the correction module includes：

Second acquisition submodule, second movement velocity current for obtaining the reception terminal；

Second determining module is used for when second movement velocity is greater than or equal to the second speed threshold value, according to The first position determines and the position relationship variation tendency for sending terminal；

Second correction module, for when demodulating the effective information, according to the position relationship variation tendency, described Second movement velocity and first movement velocity carry out Doppler correction.

In one embodiment, second correction module includes：

4th acquiring unit, if for determining the reception terminal and the transmission according to the position relationship variation tendency Terminal is close to each other, according to second movement velocity and first movement velocity and value obtain the of the reference information Two Doppler frequency shifts；

Second correction unit, for when demodulating the effective information, using second Doppler frequency shift take negative value into Row correction.

In one embodiment, second correction module includes：

5th acquiring unit, if for determining the reception terminal and the transmission according to the position relationship variation tendency Terminal is located remotely from each other, and the of the reference information is obtained according to the difference of second movement velocity and first movement velocity Tridoppler frequency displacement；

Third corrects unit, for when demodulate the effective information, using the third Doppler frequency shift take on the occasion of into Row correction.

According to a fifth aspect of the embodiments of the present disclosure, a kind of Doppler correction device is provided, including：

First processor；

First memory for storing first processor executable instruction；

Wherein, the first processor is configured as：

According to the 6th of the embodiment of the present disclosure the aspect, a kind of Doppler correction device is provided, including：

Second processor；

Second memory for storing second processor executable instruction；

Wherein, the second processor is configured as：

According to the 7th of the embodiment of the present disclosure the aspect, a kind of computer readable storage medium is provided, calculating is stored thereon with Machine instructs, which is characterized in that the step of first aspect any embodiment the method is realized when the instruction is executed by processor.

According to the eighth aspect of the embodiment of the present disclosure, a kind of computer readable storage medium is provided, is stored thereon with calculating Machine instructs, when which is executed by processor the step of realization second aspect any embodiment the method.

It should be understood that above general description and following detailed description is only exemplary and explanatory, not The disclosure can be limited.

Description of the drawings

The drawings herein are incorporated into the specification and forms part of this specification, and shows the implementation for meeting the disclosure Example, and together with specification for explaining the principles of this disclosure.

Fig. 1 a are the flow charts according to the Doppler correction method shown in an exemplary embodiment.

Fig. 1 b are the structural schematic diagrams according to the transmission terminal shown in an exemplary embodiment.

Fig. 2 a are the flow charts according to the Doppler correction method shown in an exemplary embodiment.

Fig. 2 b are the structural schematic diagrams according to the transmission terminal shown in an exemplary embodiment.

Fig. 2 c are the flow charts according to the Doppler correction method shown in an exemplary embodiment.

Fig. 3 is the interaction figure according to the Doppler correction method shown in an exemplary embodiment.

Fig. 4 a are the structural schematic diagrams according to the Doppler correction device shown in an exemplary embodiment.

Fig. 4 b are the structural schematic diagrams according to the Doppler correction device shown in an exemplary embodiment.

Fig. 4 c are the structural schematic diagrams according to the Doppler correction device shown in an exemplary embodiment.

Fig. 5 a are the structural schematic diagrams according to the Doppler correction device shown in an exemplary embodiment.

Fig. 5 b are the structural schematic diagrams according to the Doppler correction device shown in an exemplary embodiment.

Fig. 5 c are the structural schematic diagrams according to the Doppler correction device shown in an exemplary embodiment.

Fig. 5 d are the structural schematic diagrams according to the Doppler correction device shown in an exemplary embodiment.

Fig. 5 e are the structural schematic diagrams according to the Doppler correction device shown in an exemplary embodiment.

Fig. 5 f are the structural schematic diagrams according to the Doppler correction device shown in an exemplary embodiment.

Fig. 5 g are the structural schematic diagrams according to the Doppler correction device shown in an exemplary embodiment.

Fig. 5 h are the structural schematic diagrams according to the Doppler correction device shown in an exemplary embodiment.

Fig. 5 i are the structural schematic diagrams according to the Doppler correction device shown in an exemplary embodiment.

Fig. 6 is the structure diagram according to the Doppler correction device shown in an exemplary embodiment.

Specific implementation mode

Example embodiments are described in detail here, and the example is illustrated in the accompanying drawings.Following description is related to When attached drawing, unless otherwise indicated, the same numbers in different drawings indicate the same or similar elements.Following exemplary embodiment Described in embodiment do not represent all implementations consistent with this disclosure.On the contrary, they be only with it is such as appended The example of the consistent device and method of some aspects be described in detail in claims, the disclosure.

The technical solution that the embodiment of the present disclosure provides is related to sending terminal and receives terminal, wherein the transmission terminal and reception Terminal can be the equipment that intercom or mobile phone etc. are capable of mutual photos and sending messages.In the related technology, if sending terminal to receive terminal During sending information, sends terminal and receive between terminal that there are relative motions, then receiving information that terminal receives can Doppler frequency shift can be will appear.If receiving terminal according to there is no the preset reference frequency demodulation of the Doppler frequency shift information, It is possible that the situation that information demodulation effect is poor, causes acquisition of information accuracy rate relatively low.What embodiment of the disclosure provided In technical solution, reception can be sent to by the first movement velocity of the first position being currently located and current kinetic by sending terminal Terminal, Doppler frequency shift can be carried out when demodulating effective information according to first movement velocity and the first position by receiving terminal Correction, improves the effect of effective information demodulation, and then improves the accuracy rate for obtaining effective information.

The embodiment of the present disclosure provides Doppler correction method, implement this method executive agent have send terminal and Receive terminal.The embodiment of the present disclosure arranges two sets of embodiments, as described below according to the difference of method subject of implementation：

Send end side

Fig. 1 a are a kind of flow charts of Doppler correction method shown according to an exemplary embodiment, and this method is answered For sending terminal, as shown in Figure 1a, Doppler correction method includes the following steps 101 to step 103：

In a step 101, it obtains and sends the first current movement velocity of terminal and first position.

It is exemplary, as shown in Figure 1 b, sends in terminal 10 and be provided with velocity sensor 10a, GPS (Global Positioning System, global positioning system) module 10b and transport control module 10c, wherein velocity sensor 10a and GPS module 10b is connect with operation control module 10c.If it is determined that needing to when receiving terminal transmission voice messaging, which believes Breath effective information as to be sent, operation control module 10c can indicate that velocity sensor 10a is opened and detected current fortune Dynamic speed is denoted as the first movement velocity, then indicates that GPS module 10b is opened and detected the position being currently located and is denoted as first It sets.

Or operation control module 10c also can indicate that GPS module 10b is sent out twice according to prefixed time interval continuous acquisition The position made arrangements for his funeral where holding, then calculates the distance between the acquisition position twice, and according to the distance and prefixed time interval It calculates and sends the current movement velocity of terminal.If the movement speed of the movement velocity being calculated and velocity sensor 10b detections The difference of degree is less than or equal to the first predetermined threshold value, then can the movement velocity of velocity sensor 10b detections be denoted as first Movement velocity；If it is pre- that the difference of the movement velocity being calculated and the movement velocity of velocity sensor 10b detections is more than first If threshold value, then operation control module 10c indicates that velocity sensor 10b detects current movement velocity again, and be calculated Movement velocity be compared again, improve the first movement velocity acquisition accuracy rate.

In a step 102, reference information is generated according to the first movement velocity, first position and effective information to be sent.

Exemplary, sending terminal can be by first movement velocity and first position addition in voice messaging to be sent In information header, in the information header, sync bit information occupies the byte of 10Bit, first position occupies the byte of 8Bit, the first fortune Dynamic speed occupies the byte of 2Bit.Then terminal will be added with the first movement velocity and first position voice in information header is sent On modulates information to the carrier wave of reference frequency, reference information is generated.

In step 103, which is sent to reception terminal, in order to receive terminal when demodulating effective information Doppler correction is carried out according to the first movement velocity and first position.

It is exemplary, it sends terminal and AFSK (Audio Frequency Shift Keying, audio frequency shift key may be used Control) mode send reference information.It is that 1200bps is calculated it is found that added with first position and the first fortune with AFSK transmission rates The transmission time of the information header of dynamic speed occupies about 133ms, using receiving the user of terminal in the language listened to reference information and include Message is barely detectable the time delay of this 133ms when ceasing.

Optionally, with reference to shown in figure 1b, which is additionally provided with DAC module 10d, RF receiving and transmission module 10e, work( Rate amplification module 10f and transmission antenna 10g.Wherein, DAC module 10d and RF receiving and transmission module 10e with transport control module 10c connections, power amplifier module 10f are connect with RF receiving and transmission module 10e, and transmission antenna 10g connects with power amplifier module 10f It connects.DAC module 10d can believe according to the voltage for transporting control module 10c outputs to RF receiving and transmission module 10e output analog voltages Number, RF receiving and transmission module 10e can adjust the reference frequency for sending terminal according to the analog voltage signal, i.e., will send terminal Carrier frequency is adjusted to the reference frequency, and the voice messaging of the first movement velocity and first position then will be added in information header It is modulated on the carrier wave and forms reference information.Power amplifier module 10f can be to defeated after reference information progress power amplification Go out to transmission antenna 10g, sends the reference information convenient for transmission antenna 10g.

Optionally, receiving each reference frequency of terminal-pair allows there are a certain range of error, if Doppler's frequency It shifts in the error range, does not then influence the demodulation for effective information.And the speed for sending terminal is higher, receives terminal and connects The Doppler frequency shift for receiving reference information is bigger, therefore First Speed threshold value can be arranged in transmission terminal, if the first movement velocity is big In or equal to First Speed threshold value, i.e., larger in the current movement velocity of the transmission terminal, the Doppler frequency shift of generation is also larger When, the first movement velocity and first position can be obtained by sending terminal, and according to first movement velocity, the first position and be waited for The effective information of transmission generates reference information, in order to receive terminal when demodulating effective information according to the first movement velocity and the One position carries out Doppler correction；It is if the first movement velocity is less than First Speed threshold value, i.e., current in the transmission terminal Movement velocity is smaller, it is possible to create Doppler frequency shift it is smaller when, send terminal can directly to receive terminal send effectively letter Breath, the correction of Doppler frequency shift need not also be carried out by receiving terminal.

In practical application, which can send terminal to indicate to be arranged according to user, can also be hair Make arrangements for his funeral what end was calculated according to error range.It is specific send terminal can be calculated according to error range w and formula 1 this first Threshold speed v_y, reception terminal use is can also be used as due to sending terminal in practical application, receives the mistake that terminal allows Poor range is the error range for sending terminal and allowing.The formula 1 is：v_y=f* λ_c, wherein λ_cFor the light velocity.It is with reference frequency For 400MHz (megahertz), it is ± 6Hz (hertz) to send the error range w that terminal allows at this time, can be counted according to the formula 1 It is 16.2km/h (kilometer per hour) to calculate the corresponding First Speed threshold values of reference frequency 400MHz.

In the technical scheme provided by this disclosed embodiment, sending terminal can be by the first position being currently located and current First movement velocity of movement is sent to reception terminal, convenient for receiving terminal when demodulating effective information according to the first movement speed Degree and the first position carry out Doppler correction, improve the effect of effective information demodulation, and then it is effective to improve acquisition The accuracy rate of information.

Receive end side

Fig. 2 a are a kind of flow charts of Doppler correction method shown according to an exemplary embodiment, and this method is answered For receiving terminal, as shown in Figure 2 a, which includes the following steps 201 to step 202：

In step 201, it receives and sends the reference information that terminal is sent, which includes effective information, sends eventually The first position that the first current movement velocity of end and transmission terminal are currently located.

Exemplary, the frequency range where reference frequency can be monitored by receiving terminal, then received and sent terminal using the benchmark The reference information that the carrier wave of frequency is sent, the reference information include voice messaging, and hair is added in the information header of the voice messaging The first current movement velocity of end of making arrangements for his funeral and its first position being currently located.

In step 202, when demodulating effective information, Doppler frequency shift is carried out according to the first movement velocity and first position Correction.

It is exemplary, terminal is received when being demodulated to the effective information that reference information includes, and needs the benchmark that will be demodulated Frequency adjusts the frequency to where reference information, which is to receive the local frequency of terminal.Exist due to receiving terminal There may be Doppler frequency shifts when reception reference information, therefore it is not the reference letter received in reference frequency to receive terminal Breath, but the reference information received in the reference frequency after reference frequency plus or minus Doppler frequency shift, therefore connect It receives terminal to need to adjust the reference frequency of demodulation to reference frequency when demodulating effective information, which is Doppler frequency shift The process of correction.

Assuming that receiving terminal is currently at stationary state, terminal is received after receiving reference information, it can root first According to the first movement velocity v₁The first Doppler frequency shift f of reference information is calculated with formula 2_1m.The formula 2 is：f_m=v/ λ_c, wherein f_mFor f_1m, v v₁, λ_cFor the light velocity.Due to when sending terminal close to reception terminal, receiving when terminal receives reference information and generating Doppler frequency shift make reference frequency be more than reference frequency, send terminal far from receive terminal when, receive terminal receive ginseng Examining the Doppler frequency shift generated when information makes reference frequency be less than reference frequency, therefore receives terminal and carrying out doppler correction When, it is also necessary to the position relationship variation tendency for sending terminal and receiving terminal is determined, when then demodulating effective information, according to position Relationship change trend is corrected using the first Doppler frequency shift.It can be according to the first of transmission terminal specifically, receiving terminal Location determination and the position relationship variation tendency for sending terminal, for example, receiving terminal can adopt after receiving reference information Collect the position that is currently located, and according to collected position and send terminal first position it is determining and send between terminal away from From then interval preset time period acquires the position being currently located again later, and again according to collected position and transmission The first position of terminal determines and sends the distance between terminal.If second of calculated distance is greater than or equal to for the first time Calculated distance then illustrates that the change in location trend for sending terminal and receiving between terminal is to be located remotely from each other；If second Calculated distance is less than first time calculated distance, then illustrates to send terminal and receive the change in location between terminal Trend is close to each other.If determining that reception terminal and transmission terminal are close to each other according to the position relationship variation tendency, demodulating When effective information, negative value is taken to be corrected using the first Doppler frequency shift；It is received eventually if being determined according to position relationship variation tendency End is located remotely from each other with terminal is sent, and when demodulating effective information, takes positive value to be corrected using the first Doppler frequency shift.

Specifically, as shown in Figure 2 b, which may include operation control module 20a, with the operation control mould The first DAC (Digital to analog converter, digital analog converter) module 20b, the radio frequency of block 20a connections are received Send out module 20c, power amplifier module 20d and reception antenna 20e, wherein the first DAC module 20b by voltage controlled oscillator 20f with RF receiving and transmission module 20c connections, RF receiving and transmission module 20c are received for demodulating reception antenna 20e and are passed through power amplification mould Block 20d carries out the effective information that the reference information after power amplification includes.Operation control module 20a is stored with frequency displacement and voltage Correspondence, i.e., different frequency displacements correspond to operation control module 20a and export to the different voltages of the first DAC module 20b, and first DAC module 20b can be according to different voltage outputs to analog voltage signals different voltage controlled oscillator 20f, voltage controlled oscillator 20f can export different frequencies according to the different analog voltage signals of the first DAC module 20b outputs, which, which is input to, penetrates Frequency transceiver module 20c can be adjusted the local frequency of RF receiving and transmission module 20c, that is, demodulate the reference frequency of the effective information, So that the reference frequency of RF receiving and transmission module 20c demodulation effective informations is identical as the reference frequency of reference information is received.

For example, after receiving reference information, the transmission that operation control module 20a includes according to reference information first is whole First movement velocity at end calculates the first Doppler frequency shift, which is positive number, then according to reference information packet The determining change in location trend between the transmission terminal in the first position of the transmission terminal included, it is assumed that become according to the position relationship Change trend determines that reception terminal and transmission terminal are close to each other, then operation control module 20a takes the negative value of the first Doppler frequency shift, Then the correspondence for inquiring frequency displacement and voltage, determines the corresponding first voltage of the negative value of first Doppler frequency shift, then will The first voltage is exported to the first DAC module 20b, and first DAC module 20b can be according to the first voltage to voltage controlled oscillator 20f exports the first analog voltage signal, and voltage controlled oscillator 20f exports first frequency, radio frequency according to first analog voltage signal Transceiver module 20c, which can adjust reference frequency to reception reference according to the first frequency of voltage controlled oscillator 20f outputs, to be believed The reference frequency of breath is identical.The same process received when terminal is located remotely from each other with transmission terminal is similar, can refer to above-mentioned mistake Cheng Jinhang is operated.Since the reception terminal 20 can also serve as sending terminal use, the reception terminal in practical application Can also include the second DAC module 20i, second DAC module 20i is used for the adjustment carrier wave when receiving terminal 20 and sending information Frequency.

Above example assumes that receiving terminal remains static, and also exists in practical application it is also possible that receiving terminal The case where movement, if the movement velocity for receiving terminal is smaller, the Doppler frequency shift that the movement due to receiving terminal generates is smaller, Positioned at receiving in the error range that terminal allows, the movement for receiving terminal can be ignored at this time；If receiving the movement velocity of terminal It is larger, then it is larger due to receiving the Doppler frequency shift that the movement of terminal generates, it also needs to examine when carrying out Doppler correction Consider the movement for receiving terminal.In order to distinguish, second speed threshold value can also be arranged by receiving terminal, and received with reference to letter It when breath, obtains its current movement velocity and is denoted as the second movement velocity, then determine whether second movement velocity is less than second Threshold speed.When the second movement velocity is less than second speed threshold value, illustrate that the movement velocity for receiving terminal is smaller, it at this time can be with Ignore the Doppler frequency shift generated by the movement of reception terminal, reference information is directly calculated according to the first movement velocity for sending terminal The first Doppler frequency shift；When the second movement velocity is greater than or equal to second speed threshold value, then basis is needed to start terminal First movement velocity and the second movement velocity for receiving terminal calculate the first Doppler frequency shift of reference information.The second speed threshold Value can receive terminal to indicate to be arranged according to user, can also be that the error range allowed according to reference frequency is calculated , the calculating process is identical as the terminal calculating process of First Speed threshold value is sent, and can be realized with reference to above-described embodiment.

Optionally, with reference to shown in figure 2b, it can also includes GPS module 20g and velocity sensor 20h to receive terminal, obtained Operation control module 20a can indicate that velocity sensor 20h obtains the current speed note for receiving terminal when taking the second movement velocity For the second movement velocity.Or operation control module 20a also can indicate that GPS module 20g is continuously adopted according to prefixed time interval Collection sends the position where terminal twice, then calculates the distance between the acquisition position twice, and according to the distance and preset Time interval, which calculates, sends the current movement velocity of terminal.If the movement velocity being calculated is detected with velocity sensor 20h The difference of movement velocity be less than or equal to the second predetermined threshold value, then can be by the movement velocity of velocity sensor 20h detection It is denoted as the second movement velocity；If the difference of the movement velocity being calculated and the velocity sensor 20h movement velocitys detected is big In the second predetermined threshold value, then operation control module 20a indicates that velocity sensor 20h detects current movement velocity again, and with The movement velocity being calculated is compared again, improves the accuracy rate of the second movement velocity acquisition.

In practical application, transmission terminal can also obtain the first movement velocity at that time when sending effective information every time Then will include the reference transmission message hair of the first movement velocity, first position and effective information with the first position at place Give reception terminal.Receiving terminal can be after receiving with reference to message is sent, according to the size of first movement velocity, really It is fixed whether to need to carry out Doppler correction.Specifically, third speed threshold value can be arranged by receiving terminal, the third speed threshold Value can be identical as First Speed threshold value, can also be different.If first movement velocity is greater than or equal to the third speed threshold value, Illustrate that the current movement velocity of transmission terminal is larger, the Doppler frequency shift of generation is also larger, therefore receives terminal and need basis should First movement velocity calculates the first Doppler frequency shift of reference information, then determining between transmission terminal according to the first position Change in location trend, and then Doppler correction is carried out according to the change in location trend and the first Doppler frequency shift；If should First movement velocity is less than the third speed threshold value, illustrates that the current movement velocity of transmission terminal is smaller, Doppler's frequency of generation Shifting is also smaller, receives the effective information that terminal can directly include to the reference information using reference frequency and demodulates.

In the technical scheme provided by this disclosed embodiment, terminal is received when demodulating effective information, it can be according to transmission The first position of terminal and the first movement velocity of its current kinetic carry out Doppler correction, improve effective information demodulation Effect, and then improve obtain effective information accuracy rate.

In one embodiment, as shown in Figure 2 c, in step 202, when demodulating effective information, according to the first movement speed Degree and first position carry out Doppler correction, can be realized by step 2021 to step 2023：

In step 2021, obtains and receive the second current movement velocity of terminal.

In step 2022, when the second movement velocity is greater than or equal to second speed threshold value, determined according to first position With the position relationship variation tendency for sending terminal.

In step 2023, when demodulating effective information, according to position relationship variation tendency, the second movement velocity and first Movement velocity carries out Doppler correction.

It is exemplary, terminal is received when receiving reference information, can be obtained its current movement velocity and is denoted as the second fortune Dynamic speed, then determines whether second movement velocity is greater than or equal to second speed threshold value.If second movement velocity is more than Or be equal to second speed threshold value, then illustrate that the movement velocity for receiving terminal is larger, when carrying out Doppler correction, needs school The Doppler frequency shift just generated jointly by the first movement velocity of the second movement velocity of reception terminal and transmission terminal.Due to Send terminal makes reference frequency be more than close to the Doppler frequency shift generated when receiving terminal, receiving terminal reception reference information Reference frequency receives the Doppler frequency shift generated when terminal reception reference information and makes when sending terminal far from terminal is received Reference frequency is less than reference frequency, therefore receives terminal when carrying out doppler correction, it is also necessary to determine and send terminal and reception The position relationship variation tendency of terminal.

Specifically, when the second movement velocity is greater than or equal to second speed threshold value, receiving terminal can be according to first Set the position relationship variation tendency for determining and sending terminal.It receives terminal if being determined according to the position relationship variation tendency and sends Terminal is close to each other, then according to the second movement velocity v₂With the first movement velocity v₁And value, pass through formula 2 calculate reference information The second Doppler frequency shift f_2m, the f in formula 2 at this time_mAs f_2m, v v₁+v₂.Receive terminal in this case has in demodulation When imitating information, the second Doppler frequency shift may be used, negative value is taken to be corrected.

It is located remotely from each other if being determined according to the position relationship variation tendency and receiving terminal with terminal is sent, according to the second movement Speed v₂With the first movement velocity v₁Difference, pass through formula 2 calculate reference information third Doppler frequency shift f_3m, formula at this time F in 2_mAs f_3m, v is | v₁-v₂|.Terminal is received in this case when demodulating effective information, and third Doppler may be used Frequency displacement takes positive value to be corrected.

In the technical scheme provided by this disclosed embodiment, terminal is received when demodulating effective information, it can be according to transmission First movement velocity of terminal and its second movement velocity carry out Doppler correction, improve the effect of effective information demodulation Fruit, and then improve the accuracy rate for obtaining effective information.

Fig. 3 is a kind of interaction figure of Doppler correction method shown according to an exemplary embodiment, executive agent To send terminal and receiving terminal, terminal is sent in the embodiment and receives terminal all can be send intercommunication of the cloud because of information Machine, as shown in figure 3, including the following steps 301 to step 322：

In step 301, it sends terminal and current base frequency corresponding first is calculated according to the error range that system allows Threshold speed.

In step 302, it is fast if desired to send the first movement that terminal obtains currently to terminal transmission voice signal is received Degree.

In step 303, it sends terminal and determines whether first movement velocity is greater than or equal to First Speed threshold value；If should First movement velocity is less than the First Speed threshold value, executes step 304；If first movement velocity is greater than or equal to first speed Threshold value is spent, step 305 is executed.

In step 304, it sends terminal and the voice signal is sent to reception terminal.

In step 305, it sends terminal and obtains the first position being currently located.

Within step 306, terminal is sent to be generated with reference to letter according to the voice signal, the first movement velocity and the first position Breath.

In step 307, it sends terminal and the reference information is sent to the reception terminal.

In step 308, it receives terminal and current base frequency corresponding second is calculated according to the error range that system allows Threshold speed.

The second speed threshold value can be that First Speed threshold value is identical, can also be different.

In a step 309, it receives terminal and obtains the second current movement velocity.

In the step 310, it receives terminal and determines whether the second movement velocity is greater than or equal to second speed threshold value；If second Movement velocity is less than second speed threshold value, executes step 311；If the second movement velocity is greater than or equal to second speed threshold value, hold Row step 317.

In step 311, the first movement velocity that terminal obtains the transmission terminal that reference information includes is received.

In step 312, it receives terminal and the first Doppler frequency shift is calculated according to first movement velocity.

In step 313, the first position for receiving the transmission terminal that terminal includes according to reference information determines and sends eventually Change in location trend between end.

In a step 314, terminal is received according to the change in location trend, determines whether mutually leaned between transmission terminal Closely；If receiving terminal and transmission terminal being close to each other, step 315 is executed；It is located remotely from each other, executes with terminal is sent if receiving terminal Step 316.

In step 315, receive terminal takes negative value to be corrected using the first Doppler frequency shift.

In step 316, receive terminal takes positive value to be corrected using the first Doppler frequency shift.

In step 317, the first position for receiving the transmission terminal that terminal includes according to reference information determines and sends eventually Change in location trend between end.

In step 318, terminal is received according to the change in location trend, determines whether mutually leaned between transmission terminal Closely；If receiving terminal and transmission terminal being close to each other, step 319 is executed；It is located remotely from each other, executes with terminal is sent if receiving terminal Step 321.

In step 319, receive terminal using the first movement velocity and the second movement velocity and calculate the second Doppler Frequency displacement.

In step 320, receive terminal takes negative value to be corrected using the second Doppler frequency shift.

In step 321, receives terminal and third Doppler is calculated using the difference of the first movement velocity and the second movement velocity Frequency displacement.

In step 322, receive terminal takes positive value to be corrected using third Doppler frequency shift.

Embodiment of the disclosure provides a kind of Doppler correction method, sends terminal can will be currently located first First movement velocity of position and current kinetic is sent to reception terminal, receive terminal when demodulating effective information according to this first Movement velocity and the first position carry out Doppler correction, improve the effect of effective information demodulation, and then improve and obtain Take the accuracy rate of effective information.

Following is embodiment of the present disclosure, can be used for executing embodiments of the present disclosure.

Fig. 4 a are a kind of structural schematic diagrams of Doppler correction device 40 shown according to an exemplary embodiment, should Device 40 being implemented in combination with as some or all of of electronic equipment by software, hardware or both.Such as Fig. 4 a institutes Show, which includes the first acquisition module 401, generation module 402 and sending module 403.

Wherein, the first acquisition module 401, for obtaining the first current movement velocity of the transmission terminal and first It sets.

Generation module 402, for being given birth to according to first movement velocity, the first position and effective information to be sent At reference information.

Sending module 403, for the reference information to be sent to reception terminal, in order to which the reception terminal is demodulating Doppler correction is carried out according to first movement velocity and the first position when effective information.

In one embodiment, as shown in Figure 4 b, the generation module 402 includes generating submodule 4021, the generation Submodule 4021, for when first movement velocity is greater than or equal to First Speed threshold value, speed to be moved according to described first Degree, the first position and effective information to be sent generate reference information.

In one embodiment, as illustrated in fig. 4 c, described device 40 further includes the second acquisition module 404, and described second obtains Modulus block 404 obtains the corresponding First Speed threshold value of the reference frequency for the reference frequency according to work at present.

Embodiment of the disclosure provides a kind of Doppler correction device, which can be by be currently located first Set and be sent to reception terminal with the first movement velocity of current kinetic, convenient for receive terminal when demodulating effective information according to this One movement velocity and the first position carry out Doppler correction, improve the effect of effective information demodulation, and then improve Obtain the accuracy rate of effective information.

Fig. 5 a are a kind of structural schematic diagrams of Doppler correction device 50 shown according to an exemplary embodiment, should Device 50 being implemented in combination with as some or all of of electronic equipment by software, hardware or both.Such as Fig. 5 a institutes Show, which includes receiving module 501 and correction module 502.

Wherein, receiving module 501, for receiving the reference information for sending terminal and sending, the reference information includes effective Information, the first position for sending the first current movement velocity of terminal and the transmission terminal and being currently located.

Correction module 502, for when demodulating the effective information, according to first movement velocity and first described Set carry out Doppler correction.

In one embodiment, as shown in Figure 5 b, the correction module 502 include the first acquisition submodule 5021, first Determining module 5022 and the first correction module 5023.

Wherein, the first acquisition submodule 5021, for obtaining the of the reference information according to first movement velocity One Doppler frequency shift.

First determining module 5022 changes for being determined according to the first position with the position relationship for sending terminal Trend.

First correction module 5023 is used for when demodulating the effective information, according to the position relationship variation tendency It is corrected using first Doppler frequency shift.

In one embodiment, as shown in Figure 5 c, first acquisition submodule 5021 includes first acquisition unit 5021a With second acquisition unit 5021b.

Wherein, first acquisition unit 5021a, second movement velocity current for obtaining the reception terminal.

Second acquisition unit 5021b, for when second movement velocity is less than second speed threshold value, according to described the One movement velocity obtains the first Doppler frequency shift of the reference information.

In one embodiment, as fig 5d, first acquisition submodule 5021 includes third acquiring unit 5021c, the third acquiring unit 5021c are used for when first movement velocity is greater than or equal to third speed threshold value, root The first Doppler frequency shift of the reference information is obtained according to first movement velocity.

In one embodiment, as depicted in fig. 5e, first correction module 5023 includes the first correction unit 5023a, it is described first correction unit 5023a, if for according to the position relationship variation tendency determine the receptions terminal and The transmission terminal is close to each other, when demodulating the effective information, takes negative value to carry out school using first Doppler frequency shift Just.

In one embodiment, as shown in figure 5f, first correction module 5023 includes the second correction unit 5023b, it is described second correction unit 5023b, if for according to the position relationship variation tendency determine the receptions terminal and The transmission terminal is located remotely from each other, and when demodulating the effective information, takes positive value to carry out school using first Doppler frequency shift Just.

In one embodiment, as shown in fig. 5g, the correction module 502 include the second acquisition submodule 5024, second Determining module 5025 and the second correction module 5026.

Wherein, the second acquisition submodule 5024, second movement velocity current for obtaining the reception terminal.

Second determining module 5025 is used for when second movement velocity is greater than or equal to the second speed threshold value, It is determined and the position relationship variation tendency for sending terminal according to the first position.

Second correction module 5026, for when demodulating the effective information, according to the position relationship variation tendency, Second movement velocity and first movement velocity carry out Doppler correction.

In one embodiment, as shown in figure 5h, second correction module 5026 includes the 4th acquiring unit 5026a With the second correction unit 5026b.

Wherein, the 4th acquiring unit 5026a, if for determining the reception terminal according to the position relationship variation tendency It is close to each other with the transmission terminal, according to second movement velocity and first movement velocity and value obtain the ginseng Examine the second Doppler frequency shift of information.

Second correction unit 5026b, for when demodulating the effective information, being taken using second Doppler frequency shift negative Value is corrected.

In one embodiment, as shown in figure 5i, second correction module 5026 includes the 5th acquiring unit 5026c With third correction unit 5026d.

Wherein, the 5th acquiring unit 5026c, if for determining the reception terminal according to the position relationship variation tendency It is located remotely from each other with the transmission terminal, the ginseng is obtained according to the difference of second movement velocity and first movement velocity Examine the third Doppler frequency shift of information.

Third corrects unit 5026d, for when demodulating the effective information, being taken just using the third Doppler frequency shift Value is corrected.

Embodiment of the disclosure provides a kind of Doppler correction device, which, can be with when demodulating effective information Doppler correction is carried out according to the first movement velocity of the first position and its current kinetic that send terminal, is improved effectively The effect of information demodulation, and then improve the accuracy rate for obtaining effective information.

The embodiment of the present disclosure provides a kind of Doppler correction device, which includes：

First processor；

First memory for storing first processor executable instruction；

Wherein, first processor is configured as：

In one embodiment, above-mentioned first processor is also configured to：When first movement velocity is more than or waits When First Speed threshold value, is generated and referred to according to first movement velocity, the first position and effective information to be sent Information.

In one embodiment, above-mentioned first processor is also configured to：According to the reference frequency of work at present, obtain The corresponding First Speed threshold value of the reference frequency.

Second processor；

Second memory for storing second processor executable instruction；

Wherein, second processor is configured as：

In one embodiment, above-mentioned second processor is also configured to：Institute is obtained according to first movement velocity State the first Doppler frequency shift of reference information；It is determined to become with the position relationship variation for sending terminal according to the first position Gesture；When demodulating the effective information, school is carried out using first Doppler frequency shift according to the position relationship variation tendency Just.

In one embodiment, above-mentioned second processor is also configured to：Obtain second of the reception terminal currently Movement velocity；When second movement velocity is less than second speed threshold value, the ginseng is obtained according to first movement velocity Examine the first Doppler frequency shift of information.

In one embodiment, above-mentioned second processor is also configured to：When first movement velocity is more than or waits When third speed threshold value, the first Doppler frequency shift of the reference information is obtained according to first movement velocity.

In one embodiment, above-mentioned second processor is also configured to：If according to the position relationship variation tendency Determine that the reception terminal and the transmission terminal are close to each other, it is general using more than described first when demodulating the effective information Strangling frequency displacement takes negative value to be corrected.

In one embodiment, above-mentioned second processor is also configured to：If according to the position relationship variation tendency Determine that the reception terminal is located remotely from each other with the transmission terminal, it is general using more than described first when demodulating the effective information Strangling frequency displacement takes positive value to be corrected.

In one embodiment, above-mentioned second processor is also configured to：Obtain second of the reception terminal currently Movement velocity；When second movement velocity is greater than or equal to the second speed threshold value, determined according to the first position With the position relationship variation tendency for sending terminal；When demodulating the effective information, become according to position relationship variation Gesture, second movement velocity and first movement velocity carry out Doppler correction.

In one embodiment, above-mentioned second processor is also configured to：If according to the position relationship variation tendency Determine that the reception terminal and the transmission terminal are close to each other, according to second movement velocity and first movement velocity And value obtain the second Doppler frequency shift of the reference information；It is general using more than described second when demodulating the effective information Strangling frequency displacement takes negative value to be corrected.

In one embodiment, above-mentioned second processor is also configured to：If according to the position relationship variation tendency Determine that the reception terminal is located remotely from each other with the transmission terminal, according to second movement velocity and first movement velocity Difference obtain the third Doppler frequency shift of the reference information；It is how general using the third when demodulating the effective information Strangling frequency displacement takes positive value to be corrected.

About the device in above-described embodiment, wherein modules execute the concrete mode of operation in related this method Embodiment in be described in detail, explanation will be not set forth in detail herein.

Fig. 6 is a kind of structure diagram for Doppler correction device 60 shown according to an exemplary embodiment, The device 60 is suitable for sending terminal or receives terminal.For example, device 60 can be mobile phone, and computer, digital broadcasting end End, messaging devices, intercom, game console, tablet device, Medical Devices, body-building equipment, personal digital assistant etc..

Device 60 may include following one or more components：Processing component 602, memory 604, power supply module 606 are more Media component 608, audio component 610, the interface 612 of input/output (I/O), sensor module 614 and communication component 616。

The integrated operation of 602 usual control device 60 of processing component, such as with display, call, data communication, camera Operation and record operate associated operation.Processing component 602 may include one or more processors 620 to execute instruction, To perform all or part of the steps of the methods described above.In addition, processing component 602 may include one or more modules, it is convenient for Interaction between processing component 602 and other assemblies.For example, processing component 602 may include multi-media module, to facilitate more matchmakers Interaction between body component 608 and processing component 602.

Memory 604 is configured as storing various types of data to support the operation in device 60.These data are shown Example includes instruction for any application program or method that are operated on device 60, contact data, and telephone book data disappears Breath, picture, video etc..Memory 604 can be by any kind of volatibility or non-volatile memory device or their group It closes and realizes, such as static RAM (SRAM), electrically erasable programmable read-only memory (EEPROM) is erasable to compile Journey read-only memory (EPROM), programmable read only memory (PROM), read-only memory (ROM), magnetic memory, flash Device, disk or CD.

Power supply module 606 provides electric power for the various assemblies of device 60.Power supply module 606 may include power management system System, one or more power supplys and other generated with for device 60, management and the associated component of distribution electric power.

Multimedia component 608 is included in the screen of one output interface of offer between described device 60 and user.One In a little embodiments, screen may include liquid crystal display (LCD) and touch panel (TP).If screen includes touch panel, screen Curtain may be implemented as touch screen, to receive input signal from the user.Touch panel includes one or more touch sensings Device is to sense the gesture on touch, slide, and touch panel.The touch sensor can not only sense touch or sliding action Boundary, but also detect duration and pressure associated with the touch or slide operation.In some embodiments, more matchmakers Body component 608 includes a front camera and/or rear camera.When device 60 is in operation mode, such as screening-mode or When video mode, front camera and/or rear camera can receive external multi-medium data.Each front camera and Rear camera can be a fixed optical lens system or have focusing and optical zoom capabilities.

Audio component 610 is configured as output and/or input audio signal.For example, audio component 610 includes a Mike Wind (MIC), when device 60 is in operation mode, when such as call model, logging mode and speech recognition mode, microphone is configured To receive external audio signal.The received audio signal can be further stored in memory 604 or via communication component 616 send.In some embodiments, audio component 610 further includes a loud speaker, is used for exports audio signal.

I/O interfaces 612 provide interface between processing component 602 and peripheral interface module, and above-mentioned peripheral interface module can To be keyboard, click wheel, button etc..These buttons may include but be not limited to：Home button, volume button, start button and lock Determine button.

Sensor module 614 includes one or more sensors, the status assessment for providing various aspects for device 60. For example, sensor module 614 can detect the state that opens/closes of device 60, the relative positioning of component, such as the component For the display and keypad of device 60, sensor module 614 can be with the position of 60 1 components of detection device 60 or device Change, the existence or non-existence that user contacts with device 60, the temperature change of 60 orientation of device or acceleration/deceleration and device 60. Sensor module 614 may include proximity sensor, be configured to detect object nearby without any physical contact Presence.Sensor module 614 can also include that optical sensor is used for such as CMOS or ccd image sensor in imaging applications It uses.In some embodiments, which can also include acceleration transducer, gyro sensor, magnetic sensing Device, pressure sensor or temperature sensor.

Communication component 616 is configured to facilitate the communication of wired or wireless way between device 60 and other equipment.Device 60 can access the wireless network based on communication standard, such as intercom private network, WiFi, 2G, 3G, 4G or 5G or combination thereof. In one exemplary embodiment, communication component 616 receives the broadcast from external broadcasting management system via broadcast channel and believes Number or broadcast related information.In one exemplary embodiment, the communication component 616 further includes near-field communication (NFC) module, To promote short range communication.For example, NFC module can be based on radio frequency identification (RFID) technology, Infrared Data Association (IrDA) technology, Ultra wide band (UWB) technology, bluetooth (BT) technology and other technologies are realized.

In the exemplary embodiment, device 60 can be believed by one or more application application-specific integrated circuit (ASIC), number Number processor (DSP), digital signal processing appts (DSPD), programmable logic device (PLD), field programmable gate array (FPGA), controller, microcontroller, microprocessor or other electronic building bricks are realized, for executing the more of above-mentioned transmission end side The general Doppler correction method strangled frequency shift correction method or receive end side.

In the exemplary embodiment, it includes the non-transitorycomputer readable storage medium instructed, example to additionally provide a kind of Such as include the memory 604 of instruction, above-metioned instruction can be executed by the processor 620 of device 60 to complete above-mentioned transmission end side Doppler correction method or the Doppler correction method for receiving end side.For example, the non-transitory computer Readable storage medium storing program for executing can be ROM, random access memory (RAM), CD-ROM, tape, floppy disk and optical data storage devices etc..

A kind of non-transitorycomputer readable storage medium, when the instruction in the storage medium is by the processor of device 60 When execution so that device 60 is able to carry out the Doppler correction method of above-mentioned transmission end side, the method includes：

In one embodiment, described according to first movement velocity, the first position and effective letter to be sent Breath generates reference information：When first movement velocity is greater than or equal to First Speed threshold value, transported according to described first Dynamic speed, the first position and effective information to be sent generate reference information.

In one embodiment, the method further includes：According to the reference frequency of work at present, the reference frequency is obtained The corresponding First Speed threshold value.

A kind of non-transitorycomputer readable storage medium, when the instruction in the storage medium is by the processor of device 60 When execution so that device 60 is able to carry out the Doppler correction method of above-mentioned reception end side, the method includes：

In one embodiment, described when demodulating the effective information, according to first movement velocity and described One position carries out Doppler correction：The first Doppler of the reference information is obtained according to first movement velocity Frequency displacement；It is determined and the position relationship variation tendency for sending terminal according to the first position；Demodulating the effective information When, it is corrected using first Doppler frequency shift according to the position relationship variation tendency.

In one embodiment, the first Doppler frequency that the reference information is obtained according to first movement velocity Shifting includes：Obtain the second current movement velocity of the reception terminal；When second movement velocity is less than second speed threshold value When, the first Doppler frequency shift of the reference information is obtained according to first movement velocity.

In one embodiment, the first Doppler frequency that the reference information is obtained according to first movement velocity Shifting includes：When first movement velocity is greater than or equal to third speed threshold value, institute is obtained according to first movement velocity State the first Doppler frequency shift of reference information.

In one embodiment, described when demodulating the effective information, it is used according to the position relationship variation tendency First Doppler frequency shift be corrected including：If determining the reception terminal and institute according to the position relationship variation tendency It is close to each other to state transmission terminal, when demodulating the effective information, takes negative value to be corrected using first Doppler frequency shift.

In one embodiment, described when demodulating the effective information, it is used according to the position relationship variation tendency First Doppler frequency shift be corrected including：If determining the reception terminal and institute according to the position relationship variation tendency It states transmission terminal to be located remotely from each other, when demodulating the effective information, takes positive value to be corrected using first Doppler frequency shift.

In one embodiment, described when demodulating the effective information, according to first movement velocity and described One position carries out Doppler correction：Obtain the second current movement velocity of the reception terminal；When second fortune When dynamic speed is greater than or equal to the second speed threshold value, is determined according to the first position and closed with the position for sending terminal It is variation tendency；When demodulating the effective information, according to the position relationship variation tendency, second movement velocity and institute It states the first movement velocity and carries out Doppler correction.

In one embodiment, described when demodulating the effective information, according to the position relationship variation tendency, described Second movement velocity and first movement velocity carry out Doppler correction：If being become according to position relationship variation Gesture determines that the reception terminal and the transmission terminal are close to each other, according to second movement velocity and the first movement speed Degree and the value acquisition reference information the second Doppler frequency shift；When demodulating the effective information, more than described second General Le frequency displacement takes negative value to be corrected.

In one embodiment, described when demodulating the effective information, according to the position relationship variation tendency, described Second movement velocity and first movement velocity carry out Doppler correction：If being become according to position relationship variation Gesture determines that the reception terminal is located remotely from each other with the transmission terminal, according to second movement velocity and the first movement speed The difference of degree obtains the third Doppler frequency shift of the reference information；It is more using the third when demodulating the effective information General Le frequency displacement takes positive value to be corrected.

Those skilled in the art will readily occur to its of the disclosure after considering specification and putting into practice disclosure disclosed herein Its embodiment.This application is intended to cover any variations, uses, or adaptations of the disclosure, these modifications, purposes or Person's adaptive change follows the general principles of this disclosure and includes the undocumented common knowledge in the art of the disclosure Or conventional techniques.The description and examples are only to be considered as illustrative, and the true scope and spirit of the disclosure are by following Claim is pointed out.

It should be understood that the present disclosure is not limited to the precise structures that have been described above and shown in the drawings, and And various modifications and changes may be made without departing from the scope thereof.The scope of the present disclosure is only limited by the accompanying claims.

Claims

1. a kind of Doppler correction method, which is characterized in that it is applied to send terminal, including：

The reference information is sent to reception terminal, in order to the reception terminal when demodulating the effective information according to institute It states the first movement velocity and the first position carries out Doppler correction.

2. according to the method described in claim 1, it is characterized in that, it is described according to first movement velocity, it is first described It sets and includes with effective information to be sent generation reference information：

3. according to the method described in claim 2, it is characterized in that, the method further includes：

4. a kind of Doppler correction method, which is characterized in that it is applied to receive terminal, including：

Receive and send the reference information that terminal is sent, the reference information include effective information, it is described send terminal it is current the One movement velocity and the first position for sending terminal and being currently located；

When demodulating the effective information, Doppler frequency shift school is carried out according to first movement velocity and the first position Just.

5. according to the method described in claim 4, it is characterized in that, described when demodulating the effective information, according to described One movement velocity and the first position carry out Doppler correction：

When demodulating the effective information, school is carried out using first Doppler frequency shift according to the position relationship variation tendency Just.

6. according to the method described in claim 5, it is characterized in that, described obtain the reference according to first movement velocity First Doppler frequency shift of information includes：

Obtain the second current movement velocity of the reception terminal；

When second movement velocity is less than second speed threshold value, the reference information is obtained according to first movement velocity The first Doppler frequency shift.

7. according to the method described in claim 5, it is characterized in that, described obtain the reference according to first movement velocity First Doppler frequency shift of information includes：

When first movement velocity is greater than or equal to third speed threshold value, the ginseng is obtained according to first movement velocity Examine the first Doppler frequency shift of information.

8. according to the method described in claim 5 to 7 any one claim, which is characterized in that described to have described in demodulation Imitate information when, according to the position relationship variation tendency using first Doppler frequency shift be corrected including：

If determining that the reception terminal and the transmission terminal are close to each other according to the position relationship variation tendency, in demodulation institute When stating effective information, negative value is taken to be corrected using first Doppler frequency shift.

9. according to the method described in claim 5 to 7 any one claim, which is characterized in that described to have described in demodulation Imitate information when, according to the position relationship variation tendency using first Doppler frequency shift be corrected including：

If determining that the reception terminal is located remotely from each other with the transmission terminal according to the position relationship variation tendency, in demodulation institute When stating effective information, positive value is taken to be corrected using first Doppler frequency shift.

10. according to the method described in claim 4, it is characterized in that, described when demodulating the effective information, according to described One movement velocity and the first position carry out Doppler correction：

Obtain the second current movement velocity of the reception terminal；

When second movement velocity be greater than or equal to the second speed threshold value when, according to the first position determine with it is described Send the position relationship variation tendency of terminal；

11. according to the method described in claim 10, it is characterized in that, described when demodulating the effective information, according to described Position relationship variation tendency, second movement velocity and first movement velocity carry out Doppler correction：

If determining that the reception terminal and the transmission terminal are close to each other according to the position relationship variation tendency, according to described The second Doppler frequency shift that the reference information is obtained with value of second movement velocity and first movement velocity；

12. according to the method described in claim 10, it is characterized in that, described when demodulating the effective information, according to described Position relationship variation tendency, second movement velocity and first movement velocity carry out Doppler correction：

If determining that the reception terminal is located remotely from each other with the transmission terminal according to the position relationship variation tendency, according to described The difference of second movement velocity and first movement velocity obtains the third Doppler frequency shift of the reference information；

13. a kind of Doppler correction device, which is characterized in that including：

Generation module is referred to for being generated according to first movement velocity, the first position and effective information to be sent Information；

Sending module, for the reference information to be sent to reception terminal, in order to which the reception terminal has described in demodulation Doppler correction is carried out according to first movement velocity and the first position when imitating information.

14. device according to claim 13, which is characterized in that the generation module includes：

Submodule is generated, for when first movement velocity is greater than or equal to First Speed threshold value, being transported according to described first Dynamic speed, the first position and effective information to be sent generate reference information.

15. device according to claim 14, which is characterized in that described device further includes：

Second acquisition module obtains corresponding first speed of the reference frequency for the reference frequency according to work at present Spend threshold value.

16. a kind of Doppler correction device, which is characterized in that including：

Receiving module, for receiving the reference information for sending terminal and sending, the reference information includes effective information, the transmission The first current movement velocity of terminal and the first position for sending terminal and being currently located；

Correction module, for when demodulating the effective information, being carried out according to first movement velocity and the first position Doppler correction.

17. device according to claim 16, which is characterized in that the correction module includes：

First acquisition submodule, the first Doppler frequency shift for obtaining the reference information according to first movement velocity；

First determining module, for being determined and the position relationship variation tendency for sending terminal according to the first position；

First correction module is used for when demodulating the effective information, according to position relationship variation tendency use First Doppler frequency shift is corrected.

18. device according to claim 17, which is characterized in that first acquisition submodule includes：

Second acquisition unit, for when second movement velocity is less than second speed threshold value, speed to be moved according to described first Degree obtains the first Doppler frequency shift of the reference information.

19. device according to claim 17, which is characterized in that first acquisition submodule includes：

20. according to the device described in claim 17 to 19 any one claim, which is characterized in that first syndrome Module includes：

First correction unit, if for determining the reception terminal and the transmission terminal according to the position relationship variation tendency It is close to each other, when demodulating the effective information, take negative value to be corrected using first Doppler frequency shift.

21. according to the device described in claim 17 to 19 any one claim, which is characterized in that first syndrome Module includes：

Second correction unit, if for determining the reception terminal and the transmission terminal according to the position relationship variation tendency It is located remotely from each other, when demodulating the effective information, takes positive value to be corrected using first Doppler frequency shift.

22. device according to claim 16, which is characterized in that the correction module includes：

Second determining module is used for when second movement velocity is greater than or equal to the second speed threshold value, according to described First position determines and the position relationship variation tendency for sending terminal；

Second correction module is used for when demodulating the effective information, according to the position relationship variation tendency, described second Movement velocity and first movement velocity carry out Doppler correction.

23. device according to claim 22, which is characterized in that second correction module includes：

4th acquiring unit, if for determining the reception terminal and the transmission terminal according to the position relationship variation tendency It is close to each other, according to more than second with the value acquisition reference information of second movement velocity and first movement velocity General Le frequency displacement；

Second correction unit, for when demodulating the effective information, taking negative value to carry out school using second Doppler frequency shift Just.

24. device according to claim 22, which is characterized in that second correction module includes：

5th acquiring unit, if for determining the reception terminal and the transmission terminal according to the position relationship variation tendency It is located remotely from each other, the third that the reference information is obtained according to the difference of second movement velocity and first movement velocity is more General Le frequency displacement；

Third corrects unit, for when demodulating the effective information, taking positive value to carry out school using the third Doppler frequency shift Just.

25. a kind of Doppler correction device, which is characterized in that including：

First processor；

First memory for storing first processor executable instruction；

Wherein, the first processor is configured as：

26. a kind of Doppler correction device, which is characterized in that including：

Second processor；

Second memory for storing second processor executable instruction；

Wherein, the second processor is configured as：

27. a kind of computer readable storage medium, is stored thereon with computer instruction, which is characterized in that the instruction is by processor The step of claims 1 to 3 any one claim the method is realized when execution.

28. a kind of computer readable storage medium, is stored thereon with computer instruction, which is characterized in that the instruction is by processor The step of claim 4 to 12 any one claim the method is realized when execution.