CN105577351B - The measurement method and device of a kind of time and distance - Google Patents
The measurement method and device of a kind of time and distance Download PDFInfo
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- CN105577351B CN105577351B CN201510957141.7A CN201510957141A CN105577351B CN 105577351 B CN105577351 B CN 105577351B CN 201510957141 A CN201510957141 A CN 201510957141A CN 105577351 B CN105577351 B CN 105577351B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L7/00—Arrangements for synchronising receiver with transmitter
- H04L7/0008—Synchronisation information channels, e.g. clock distribution lines
- H04L7/0012—Synchronisation information channels, e.g. clock distribution lines by comparing receiver clock with transmitter clock
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
- G01S13/06—Systems determining position data of a target
- G01S13/08—Systems for measuring distance only
- G01S13/32—Systems for measuring distance only using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated
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Abstract
This application discloses a kind of time and the measurement methods and device of distance, method of this method based on two-way pumping station, main platform and auxiliary platform send mutually the positive negative slope linear FM signal of difference frequency band, and the positive negative slope linear FM signal of difference frequency band is also generated local respectively, the positive negative slope linear FM signal of difference frequency band that master/slave platform is generated to the positive negative slope linear FM signal of the difference frequency band received and locally respectively again is mixed, frequency after determining mixing, at the time of sending the positive negative slope linear FM signal of difference frequency band respectively further according to master/slave platform, at the time of master/slave platform generates the positive negative slope linear FM signal of difference frequency band respectively, and the frequency after mixing, measure the clocking error and distance between main platform and auxiliary platform.By the above method, since the positive negative slope linear FM signal of difference frequency band can effectively inhibit Doppler effect to the influence of measurement clocking error and distance, the accuracy of the clocking error and distance between measurement high-speed motion platform can be effectively improved.
Description
Technical field
This application involves testing field more particularly to a kind of time and the measurement methods and device of distance.
Background technique
In practical applications, due to having differences property between clock, so as to cause the platform for being located at different high-speed motions
Clock between there are the error of time, this makes subsequent based on the inaccuracy of data obtained from the time, therefore, can pass through one
Determine means and measure clocking error between different clocks, and according to the clocking error measured, is carried out to clock same the time
Step.
In the prior art, for the clock for being located at different platform, e.g., a clock is located at main platform, a clock bit
In auxiliary platform, for main platform by sending FM signal to auxiliary platform, auxiliary platform calculates clock according to the FM signal received
Error and distance.
But conventionally, as the platform of high-speed motion will receive Doppler effect when transmitting FM signal
Influence, therefore, the FM signal that FM signal that auxiliary platform receives and main platform are sent has occurred that variation, in this way,
Clocking error between the two high-speed motion platforms calculated subsequently through FM signal and lower apart from accuracy.
Summary of the invention
The embodiment of the present application provides the measurement method and device of a kind of time and distance, passes through in the prior art to solve
Clocking error and the problem lower apart from accuracy between two high-speed motion platforms that FM signal calculates.
The measurement method of a kind of time provided by the embodiments of the present application and distance, including：
Main platform sends measurement instruction to auxiliary platform, and receives the response instruction of auxiliary platform return；
The main platform sends the positive negative slope linear FM signal S of difference frequency band to auxiliary platform1, receive auxiliary platform will
The positive negative slope linear FM signal S of difference frequency band that the positive negative slope linear FM signal of difference frequency band and the auxiliary platform generate1' into
Row mixing, and determine the frequency of the first mixed frequency signal；Wherein, the positive negative slope linear frequency modulation of difference frequency band that the auxiliary platform generates
Signal S1' it is that the auxiliary platform returns and postpones the first preset time after response instruction and generate；
The main platform receives the positive negative slope linear FM signal S of difference frequency band that auxiliary platform is sent2, wherein difference frequency band is just
Negative slope linear FM signal S2It is the auxiliary platform after the frequency for determining the first mixed frequency signal, is sent to the main platform
's；
The main platform is sending the positive negative slope linear FM signal S of difference frequency band to auxiliary platform1When delay second is default afterwards
Between, generate the positive negative slope linear FM signal S of difference frequency band2'；
The main platform is by the positive negative slope linear FM signal S of the difference frequency band received2The difference frequency band locally generated is just
Negative slope linear FM signal S2' be mixed, determine the frequency of the second mixed frequency signal；
The main platform receives the positive negative slope linear FM signal S of generation difference frequency band that the auxiliary platform is sent1' when
It carves, send the positive negative slope linear FM signal S of difference frequency band2At the time of, the first mixed frequency signal frequency；
The main platform is according to the transmission positive negative slope linear FM signal S of difference frequency band1At the time of, the auxiliary platform generate it is poor
The positive negative slope linear FM signal S of frequency band1' at the time of, the auxiliary platform send the positive negative slope linear FM signal S of difference frequency band2's
Moment, the main platform generate the positive negative slope linear FM signal S of difference frequency band2' at the time of, first mixed frequency signal frequency
And second mixed frequency signal frequency, measure the clocking error and distance between the main platform and auxiliary platform.
The measuring device of a kind of time provided by the embodiments of the present application and distance, device include：
Command reception module for sending measurement instruction to auxiliary platform, and receives the response instruction of auxiliary platform return；
Sending module, for sending the positive negative slope linear FM signal S of difference frequency band to auxiliary platform1, receive auxiliary platform will
The positive negative slope linear FM signal of difference frequency band that the positive negative slope linear FM signal of the difference frequency band arrived and the auxiliary platform generate
S1' be mixed, and determine the frequency of the first mixed frequency signal, wherein the positive negative slope line of difference frequency band that the auxiliary platform generates
Property FM signal S1' it is that the auxiliary platform returns and postpones the first preset time after response instruction and generate；
Signal receiving module, for receiving the positive negative slope linear FM signal S of difference frequency band of auxiliary platform transmission2, wherein it is poor
The positive negative slope linear FM signal S of frequency band2It is the auxiliary platform after the frequency for determining the first mixed frequency signal, it is flat to the master
What platform was sent；
Generation module, for sending the positive negative slope linear FM signal S of difference frequency band to auxiliary platform1Delay second is default afterwards
Time generates the positive negative slope linear FM signal S of difference frequency band2'；
Frequency measurement module, the positive negative slope linear FM signal S of difference frequency band for will receive2The difference frequency band locally generated
Positive negative slope linear FM signal S2' be mixed, determine the frequency of the second mixed frequency signal；
Data reception module, the positive negative slope linear FM signal of generation difference frequency band sent for receiving the auxiliary platform
S1' at the time of, send the positive negative slope linear FM signal S of difference frequency band2At the time of, the first mixed frequency signal frequency；
Measurement module, for according to the transmission positive negative slope linear FM signal S of difference frequency band1At the time of, the auxiliary platform it is raw
At the positive negative slope linear FM signal S of difference frequency band1' at the time of, the auxiliary platform send difference frequency band positive negative slope linear frequency modulation letter
Number S2At the time of, the main platform generate the positive negative slope linear FM signal S of difference frequency band2' at the time of, first mixed frequency signal
Frequency and the second mixed frequency signal frequency, measure the clocking error and distance between the main platform and auxiliary platform.
The embodiment of the present application provides the measurement method and device of a kind of time and distance, side of this method based on two-way pumping station
Method, main platform and auxiliary platform send mutually the positive negative slope linear FM signal of difference frequency band, and also generate difference frequency band local respectively
Positive negative slope linear FM signal, master/slave platform is again respectively to the positive negative slope linear FM signal of the difference frequency band received and this
The positive negative slope linear FM signal of difference frequency band that ground generates is mixed, the frequency after determining mixing, further according to master/slave platform
At the time of sending the positive negative slope linear FM signal of difference frequency band respectively, that master/slave platform generates the positive negative slope of difference frequency band respectively is linear
Frequency at the time of FM signal and after mixing, measures the clocking error and distance between main platform and auxiliary platform.By upper
State method, due to the positive negative slope linear FM signal of difference frequency band can effectively inhibit Doppler effect to measurement clocking error and away from
From influence, therefore can effectively improve measurement high-speed motion platform between clocking error and distance accuracy.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present application, constitutes part of this application, this Shen
Illustrative embodiments and their description please are not constituted an undue limitation on the present application for explaining the application.In the accompanying drawings：
Fig. 1 is the measurement process of time provided by the embodiments of the present application and distance；
Fig. 2 is the measuring device structural schematic diagram of time provided by the embodiments of the present application and distance.
Specific embodiment
To keep the purposes, technical schemes and advantages of the application clearer, below in conjunction with the application specific embodiment and
Technical scheme is clearly and completely described in corresponding attached drawing.Obviously, described embodiment is only the application one
Section Example, instead of all the embodiments.Based on the embodiment in the application, those of ordinary skill in the art are not doing
Every other embodiment obtained under the premise of creative work out, shall fall in the protection scope of this application.
Fig. 1 is the measurement process of time provided by the embodiments of the present application and distance, specifically includes following steps：
S101：Main platform sends measurement instruction to auxiliary platform.
S102：Auxiliary platform returns to response instruction to main platform.
In the embodiment of the present application, the platform be measure clocking error and platform spacing from carrier, e.g., vehicle etc..
Due to it is to be measured in the application be clocking error and distance between two different platforms, in this application, can
Two platforms are divided into main platform and auxiliary platform, two different platforms are distinguished with this.
The measurement instruction and response instruction mutually trigger clocking error and distance for main platform and auxiliary platform
Measurement.
S103：Main platform sends the positive negative slope linear FM signal S of difference frequency band to auxiliary platform1。
S104：Auxiliary platform generates the positive negative slope linear FM signal S of difference frequency band1'。
In this application, the positive negative slope linear FM signal S of difference frequency band that the auxiliary platform generates1' it is that the auxiliary platform returns
Postpone the first preset time (e.g., 1ms) generation after returning response instruction.
S105：The difference frequency that auxiliary platform generates the positive negative slope linear FM signal of the difference frequency band received and the auxiliary platform
With positive negative slope linear FM signal S1' be mixed, and determine the frequency of the first mixed frequency signal.
In this application, auxiliary platform is by the positive negative slope linear FM signal S of the difference frequency band received1The difference locally generated
The positive negative slope linear FM signal S of frequency band1' Frequency mixing processing is carried out, obtain the first mixed frequency signal.
Subsequent, auxiliary platform can carry out analog-to-digital conversion and frequency measurement to the first obtained mixed frequency signal and handle, to obtain the
The frequency of one mixed frequency signal.The analog-to-digital conversion is used for the positive negative slope linear FM signal of difference frequency band in transmission process by mould
Quasi- signal is converted into the digital signal that computer can recognize and handle, and the frequency measurement processing is for calculating first using computer
The frequency of mixed frequency signal.
S106：Auxiliary platform sends the positive negative slope linear FM signal S of difference frequency band to main platform2。
In this application, the positive negative slope linear FM signal S of difference frequency band2It is that auxiliary platform is determining the first mixed frequency signal
After frequency, sent to the main platform.
S107：The main platform is sending the positive negative slope linear FM signal S of difference frequency band to auxiliary platform1Delay second is pre- afterwards
If the time, the positive negative slope linear FM signal S of difference frequency band is generated2'。
In the embodiment of the present application, main platform is sending the positive negative slope linear FM signal S of difference frequency band to auxiliary platform1Afterwards,
Postpone the second preset time (e.g., 2ms), generates the positive negative slope linear FM signal S of difference frequency band in main Platform native2', rather than
Strictly after step s 106, main platform just generates the positive negative slope linear FM signal S of difference frequency band2', second preset time
Can be equal with first preset time, can also be unequal,
It should be noted that main the second preset time of platform latency generates S2' the reason of be：Subsequent main platform will
The positive negative slope linear FM signal S of the difference frequency band received2The positive negative slope linear frequency modulation of difference frequency band generated with main Platform native
Signal S2' carry out Frequency mixing processing when, can produce the frequency difference convenient for subsequent calculating.Similar, auxiliary platform postpones in step S105
First preset time generates S1' the reason of be also the frequency difference that can produce convenient for subsequent calculating.
S108：Main platform is by the positive negative slope linear FM signal S of the difference frequency band received2The difference frequency band locally generated is just
Negative slope linear FM signal S2' be mixed, determine the frequency of the second mixed frequency signal.
In this application, main platform is by the positive negative slope linear FM signal S of the difference frequency band received2The difference locally generated
The positive negative slope linear FM signal S of frequency band2' Frequency mixing processing is carried out, obtain the second mixed frequency signal.
Subsequent, main platform carries out analog-to-digital conversion to the second obtained mixed frequency signal and frequency measurement is handled, to obtain second
The frequency of mixed frequency signal.The analog-to-digital conversion is used for the positive negative slope linear FM signal of difference frequency band in transmission process by simulating
Signal is converted into the digital signal that computer can recognize and handle, and the frequency measurement processing is mixed for calculating second using computer
The frequency of frequency signal.
In addition, it should be noted that in the positive negative slope linear FM signal S of difference frequency band mentioned above1、S1'、S2、
S2' parameter be it is identical, also, the positive negative slope linear FM signal of any difference frequency band by positive slope linear FM signal with
Negative slope linear FM signal is mixed to get, moreover, between two frequency bands of the positive negative slope linear FM signal of any difference frequency band
Frequency difference is respectively greater than the frequency of the first mixed frequency signal after being mixed and the frequency of the second mixed frequency signal, and the difference frequency band is positive and negative tiltedly
Frequency difference refers to that difference frequency band positive slope FM signal and difference frequency band are negative oblique in the signal between two frequency bands of rate linear FM signal
Frequency band between rate FM signal is poor.
S109：Main platform receives the positive negative slope linear FM signal S of generation difference frequency band that the auxiliary platform is sent1' when
It carves, send the positive negative slope linear FM signal S of difference frequency band2At the time of, the first mixed frequency signal frequency.
S1010：Main platform is according to the transmission positive negative slope linear FM signal S of difference frequency band1At the time of, the auxiliary platform generate
The positive negative slope linear FM signal S of difference frequency band1' at the time of, the auxiliary platform send the positive negative slope linear FM signal S of difference frequency band2
At the time of, the main platform generate the positive negative slope linear FM signal S of difference frequency band2' at the time of, first mixed frequency signal frequency
The frequency of rate and the second mixed frequency signal measures clocking error and distance between the main platform and auxiliary platform.
Since in this application, subsequent main platform is according to the transmission positive negative slope linear FM signal S of difference frequency band1When
It carves, auxiliary platform generates the positive negative slope linear FM signal S of difference frequency band1' at the time of, auxiliary platform send the positive negative slope of difference frequency band it is linear
FM signal S2At the time of, main platform generate the positive negative slope linear FM signal S of difference frequency band2' at the time of, first mixed frequency signal
The frequency of frequency and the second mixed frequency signal, it is therefore, main to measure clocking error between main platform and auxiliary platform and distance
Platform is after the frequency for determining the second mixed frequency signal, it is also necessary to get the frequency for the first mixed frequency signal that auxiliary platform is determined
Rate and auxiliary platform generate the positive negative slope linear FM signal S of difference frequency band1' at the time of, auxiliary platform send the positive negative slope of difference frequency band
Linear FM signal S2At the time of.
Therefore, the above-mentioned data of auxiliary platform are obtained especially by following manner in this application：Main platform is to auxiliary platform
Measurement result inquiry instruction is sent, after auxiliary platform receives measurement result inquiry instruction again, it is positive and negative tiltedly will directly to generate difference frequency band
Rate linear FM signal S1' at the time of, send the positive negative slope linear FM signal S of difference frequency band2At the time of, first mixed frequency signal
Frequency is sent to main platform, and the measurement result inquiry instruction is used to obtain the frequency that auxiliary platform determines the first mixed frequency signal,
And auxiliary platform generates the positive negative slope linear FM signal S of difference frequency band1' at the time of, auxiliary platform send the positive negative slope line of difference frequency band
Property FM signal S2At the time of.
It should be noted that main platform sends the positive negative slope linear FM signal S of difference frequency band1At the time of and it is main flat
Platform generates the positive negative slope linear FM signal S of difference frequency band2' at the time of be clock on main platform time, and auxiliary platform generate it is poor
The positive negative slope linear FM signal S of frequency band1' at the time of and auxiliary platform send the positive negative slope linear FM signal S of difference frequency band2's
Moment is the time of clock on auxiliary platform.
By the above method, since the positive negative slope linear FM signal of difference frequency band effectively can inhibit Doppler effect to survey
The influence of clocking error and distance is measured, therefore the standard of the clocking error and distance between measurement high-speed motion platform can be effectively improved
True property.
In this application, due in practical applications, the clocking errors of two platforms its actually at a time, when main platform
Between difference with the auxiliary platform time, that is to say, that be expressed as with expression formula：Clocking error=synchronization (main plateau time-pair
Plateau time).
Based on this expression formula, it is assumed that main platform is in t1Moment sends the positive negative slope linear FM signal of difference frequency band to auxiliary platform
S1Until auxiliary platform receives the positive negative slope linear FM signal S of difference frequency band1During, on main platform the time of clock be：And the time of clock is on auxiliary platform：t1'-f1'/K, it is assumed that the clock of two platforms misses
Difference is δt, therefore,
Assuming that auxiliary platform is in t2' the moment to main platform send the positive negative slope linear FM signal S of difference frequency band2Until auxiliary platform
Receive the positive negative slope linear FM signal S of difference frequency band2During, on auxiliary platform the time of clock be：And the time of clock is on main platform：t2-f2/ K, it is assumed that the clock of two platforms misses
Difference is δt, therefore,
In above-mentioned expression formula, the system of auxiliary platform sends delay time DelayPair hair, main platform system receive delay time
DelayMain receipts, auxiliary platform system send delay time DelayPair hair, main platform system receive delay time DelayMain receiptsIt is respectively
The system delay time of main platform and auxiliary platform, the transmitting and receiving device on platform is different, the system delay time of transmission and
Received delay time is also just different.
In this application, Δ t is enableda=DelayMain hair+DelayPair is received, enable Δ tb=DelayPair hair+DelayMain receipts, also, in short-term
Relative displacement between interior main platform and auxiliary platform is smaller, that is to say, that R' can be approximately considered equal to R, therefore, pass through above-mentioned table
Up to the available following clocking error of formula and the expression formula of distance：
Wherein, δtIndicate the clocking error between main platform and auxiliary platform, t1Indicate that main platform sends S to auxiliary platform1When
It carves, t1' indicate that auxiliary platform generates S1' at the time of, f1' indicate the first mixed frequency signal frequency, K indicate the positive negative slope line of difference frequency band
Property FM signal S1、S1'、S2、S2' chirp rate, t2Indicate that main platform generates S2' at the time of, f2Indicate the second mixed frequency signal
Frequency, t2' indicate that auxiliary platform sends S to main platform2At the time of, Δ taIndicate that main platform is positive and negative to auxiliary platform transmission difference frequency band
Slope linear FM signal S1System delay time DelayMain hairThe positive negative slope of difference frequency band that main platform is sent is received with auxiliary platform
Linear FM signal S1System delay time DelayPair is receivedThe sum of, Δ tbIndicate that auxiliary platform is positive and negative tiltedly to main platform transmission difference frequency band
Rate linear FM signal S2System delay time DelayPair hairThe positive negative slope line of difference frequency band that auxiliary platform is sent is received with main platform
Property FM signal S2System delay time DelayMain receiptsThe sum of, R indicates that the distance between main platform and auxiliary platform, C indicate that light passes
The speed broadcast.
Subsequent, main platform can miss after measuring clocking error and the distance between main platform and auxiliary platform according to clock
Difference adjusts the clock on main platform, and clocking error and distance are sent to auxiliary platform, and auxiliary platform is receiving main platform hair
After the clocking error sent, the clock on auxiliary platform is adjusted according to clocking error, reaching between winner's platform and auxiliary platform is made with this
It is synchronous to clock.
The above are time provided by the embodiments of the present application and the measurement methods of distance, are based on same thinking, and the application is real
It applies example and the measuring device of a kind of time and distance is also provided, as shown in Figure 2.
Fig. 2 is the measuring device structural schematic diagram of time provided by the embodiments of the present application and distance, including:
Transceiver module 201 is instructed, for sending measurement instruction to auxiliary platform, and the response for receiving auxiliary platform return refers to
It enables；
Sending module 202, for sending the positive negative slope linear FM signal S of difference frequency band to auxiliary platform1, connect auxiliary platform will
The positive negative slope linear frequency modulation letter of the difference frequency band that the positive negative slope linear FM signal of the difference frequency band received and the auxiliary platform generate
Number S1' be mixed, and determine the frequency of the first mixed frequency signal, wherein the positive negative slope of difference frequency band that the auxiliary platform generates
Linear FM signal S1' it is that the auxiliary platform returns and postpones the first preset time after response instruction and generate；
Signal receiving module 203, for receiving the positive negative slope linear FM signal S of difference frequency band of auxiliary platform transmission2,
In, the positive negative slope linear FM signal S of difference frequency band2It is the auxiliary platform after the frequency for determining the first mixed frequency signal, to institute
State what main platform was sent；
Generation module 204, for sending the positive negative slope linear FM signal S of difference frequency band to auxiliary platform1After postpone second
Preset time generates the positive negative slope linear FM signal S of difference frequency band2'；
Frequency measurement module 205, the positive negative slope linear FM signal S of difference frequency band for will receive2The difference locally generated
The positive negative slope linear FM signal S of frequency band2' be mixed, determine the frequency of the second mixed frequency signal；
Data reception module 206, for receiving the positive negative slope linear frequency modulation letter of generation difference frequency band that the auxiliary platform is sent
Number S1' at the time of, send the positive negative slope linear FM signal S of difference frequency band2At the time of, the first mixed frequency signal frequency；
Measurement module 207, for according to the transmission positive negative slope linear FM signal S of difference frequency band1At the time of, the auxiliary platform
Generate the positive negative slope linear FM signal S of difference frequency band1' at the time of, the auxiliary platform send the positive negative slope linear frequency modulation of difference frequency band
Signal S2At the time of, the main platform generate the positive negative slope linear FM signal S of difference frequency band2' at the time of, it is described first mixing letter
Number frequency and the second mixed frequency signal frequency, measure the clocking error and distance between the main platform and auxiliary platform.
The positive negative slope linear FM signal S of difference frequency band1、S1'、S2、S2' parameter it is identical, and any positive negative slope of difference frequency band
Frequency difference is greater than the frequency and the second mixed frequency signal of the first mixed frequency signal after mixing between two frequency bands of linear FM signal
Frequency.
The frequency measurement module 205 is specifically used for, by the positive negative slope linear FM signal S of the difference frequency band received2The local and
The positive negative slope linear FM signal S of the difference frequency band of generation2' be mixed, the second mixed frequency signal is obtained, second mixing is believed
Number carry out analog-to-digital conversion and frequency measurement processing, obtain the frequency of the second mixed frequency signal.
The data reception module 206 is specifically used for, and sends measurement result inquiry instruction to auxiliary platform, receives auxiliary platform root
It is sent according to the measurement result inquiry instruction：Generate the positive negative slope linear FM signal S of difference frequency band1' at the time of, send difference frequency
With positive negative slope linear FM signal S2At the time of, the first mixed frequency signal frequency.
The measurement module 207 is specifically used for, according to formulaWithMeasure the clocking error between the main platform and auxiliary platform
And distance, wherein δtIndicate the clocking error between main platform and auxiliary platform, t1Indicate that main platform sends S to auxiliary platform1When
It carves, t1' indicate that auxiliary platform generates S1' at the time of, f1' indicate the first mixed frequency signal frequency, K indicate the positive negative slope line of difference frequency band
Property FM signal S1、S1'、S2、S2' chirp rate, t2Indicate that main platform generates S2' at the time of, f2Indicate the second mixed frequency signal
Frequency, t2' indicate that auxiliary platform sends S to main platform2At the time of, Δ taIndicate that main platform is positive and negative to auxiliary platform transmission difference frequency band
Slope linear FM signal S1System delay time DelayMain hairThe positive negative slope of difference frequency band that main platform is sent is received with auxiliary platform
Linear FM signal S1System delay time DelayPair is receivedThe sum of, Δ tbIndicate that auxiliary platform is positive and negative tiltedly to main platform transmission difference frequency band
Rate linear FM signal S2System delay time DelayPair hairThe positive negative slope line of difference frequency band that auxiliary platform is sent is received with main platform
Property FM signal S2System delay time DelayMain receiptsThe sum of, R indicates that the distance between main platform and auxiliary platform, C indicate that light passes
The speed broadcast.
In a typical configuration, calculating equipment includes one or more processors (CPU), input/output interface, net
Network interface and memory.
Memory may include the non-volatile memory in computer-readable medium, random access memory (RAM) and/or
The forms such as Nonvolatile memory, such as read-only memory (ROM) or flash memory (flash RAM).Memory is computer-readable medium
Example.
Computer-readable medium includes permanent and non-permanent, removable and non-removable media can be by any method
Or technology come realize information store.Information can be computer readable instructions, data structure, the module of program or other data.
The example of the storage medium of computer includes, but are not limited to phase change memory (PRAM), static random access memory (SRAM), moves
State random access memory (DRAM), other kinds of random access memory (RAM), read-only memory (ROM), electric erasable
Programmable read only memory (EEPROM), flash memory or other memory techniques, read-only disc read only memory (CD-ROM) (CD-ROM),
Digital versatile disc (DVD) or other optical storage, magnetic cassettes, tape magnetic disk storage or other magnetic storage devices
Or any other non-transmission medium, can be used for storage can be accessed by a computing device information.As defined in this article, it calculates
Machine readable medium does not include temporary computer readable media (transitory media), such as the data-signal and carrier wave of modulation.
It should also be noted that, the terms "include", "comprise" or its any other variant are intended to nonexcludability
It include so that the process, method, commodity or the equipment that include a series of elements not only include those elements, but also to wrap
Include other elements that are not explicitly listed, or further include for this process, method, commodity or equipment intrinsic want
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including described want
There is also other identical elements in the process, method of element, commodity or equipment.
It will be understood by those skilled in the art that embodiments herein can provide as method, system or computer program product.
Therefore, complete hardware embodiment, complete software embodiment or embodiment combining software and hardware aspects can be used in the application
Form.It is deposited moreover, the application can be used to can be used in the computer that one or more wherein includes computer usable program code
The shape for the computer program product implemented on storage media (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.)
Formula.
The above description is only an example of the present application, is not intended to limit this application.For those skilled in the art
For, various changes and changes are possible in this application.All any modifications made within the spirit and principles of the present application are equal
Replacement, improvement etc., should be included within the scope of the claims of this application.
Claims (10)
1. the measurement method of a kind of time and distance, which is characterized in that including：
Main platform sends measurement instruction to auxiliary platform, and receives the response instruction of auxiliary platform return；
The main platform sends the positive negative slope linear FM signal S of difference frequency band to auxiliary platform1, the difference frequency that receives auxiliary platform will
The positive negative slope linear FM signal S of difference frequency band generated with positive negative slope linear FM signal and the auxiliary platform1' mixed
Frequently, and the frequency of the first mixed frequency signal is determined；Wherein, the positive negative slope linear FM signal of difference frequency band that the auxiliary platform generates
S1' it is that the auxiliary platform returns and postpones the first preset time after response instruction and generate；
The main platform receives the positive negative slope linear FM signal S of difference frequency band that auxiliary platform is sent2, wherein the positive negative slope of difference frequency band
Linear FM signal S2It is the auxiliary platform after the frequency for determining the first mixed frequency signal, is sent to the main platform；
The main platform is sending the positive negative slope linear FM signal S of difference frequency band to auxiliary platform1After postpone the second preset time, it is raw
At the positive negative slope linear FM signal S of difference frequency band2'；
The main platform is by the positive negative slope linear FM signal S of the difference frequency band received2The positive negative slope of difference frequency band locally generated
Linear FM signal S2' be mixed, determine the frequency of the second mixed frequency signal；
The main platform receives the positive negative slope linear FM signal S of generation difference frequency band that the auxiliary platform is sent1' at the time of, transmission
The positive negative slope linear FM signal S of difference frequency band2At the time of, the first mixed frequency signal frequency；
The main platform is according to the transmission positive negative slope linear FM signal S of difference frequency band1At the time of, the auxiliary platform generate difference frequency band
Positive negative slope linear FM signal S1' at the time of, the auxiliary platform send the positive negative slope linear FM signal S of difference frequency band2When
It carves, the main platform generates the positive negative slope linear FM signal S of difference frequency band2' at the time of, first mixed frequency signal frequency with
And second mixed frequency signal frequency, measure the clocking error and distance between the main platform and auxiliary platform.
2. the method as described in claim 1, which is characterized in that the positive negative slope linear FM signal S of difference frequency band1、S1'、S2、S2'
Parameter it is identical, and frequency difference is respectively greater than the after being mixed between two frequency bands of the positive negative slope linear FM signal of any difference frequency band
The frequency of the frequency of one mixed frequency signal and the second mixed frequency signal.
3. the method as described in claim 1, which is characterized in that the main platform is linear by the positive negative slope of difference frequency band received
FM signal S2The positive negative slope linear FM signal S of the difference frequency band locally generated2' be mixed, determine the second mixed frequency signal
Frequency, specifically include：
The main platform is by the positive negative slope linear FM signal S of the difference frequency band received2The positive negative slope of difference frequency band locally generated
Linear FM signal S2' be mixed, obtain the second mixed frequency signal；
Analog-to-digital conversion and frequency measurement processing are carried out to second mixed frequency signal, obtain the frequency of the second mixed frequency signal.
4. the method as described in claim 1, which is characterized in that the main platform receives the generation difference frequency that the auxiliary platform is sent
With positive negative slope linear FM signal S1' at the time of, send the positive negative slope linear FM signal S of difference frequency band2At the time of, it is first mixed
The frequency of frequency signal, specifically includes：
The main platform sends measurement result inquiry instruction to auxiliary platform；
Receive what auxiliary platform was sent according to the measurement result inquiry instruction：Generate the positive negative slope linear FM signal S of difference frequency band1'
At the time of, send the positive negative slope linear FM signal S of difference frequency band2At the time of, the first mixed frequency signal frequency.
5. method according to claim 2, which is characterized in that the main platform is linearly adjusted according to the positive negative slope of difference frequency band is sent
Frequency signal S1At the time of, the auxiliary platform generate the positive negative slope linear FM signal S of difference frequency band1' at the time of, the auxiliary platform hair
Send difference frequency band positive negative slope linear FM signal S2At the time of, the main platform generate the positive negative slope linear FM signal of difference frequency band
S2' at the time of, the frequency of first mixed frequency signal and the second mixed frequency signal frequency, measure the main platform and auxiliary platform
Between clocking error and distance, specifically include：
According to formulaWithIt surveys
Measure the clocking error and distance between the main platform and auxiliary platform；
Wherein, δtIndicate the clocking error between main platform and auxiliary platform, t1Indicate that main platform sends S to auxiliary platform1At the time of,
t1' indicate that auxiliary platform generates S1' at the time of, f1' indicate the first mixed frequency signal frequency, K indicate the positive negative slope of difference frequency band linearly adjust
Frequency signal S1、S1'、S2、S2' chirp rate, t2Indicate that main platform generates S2' at the time of, f2Indicate the frequency of the second mixed frequency signal
Rate, t2' indicate that auxiliary platform sends S to main platform2At the time of, Δ taIndicate that main platform sends the positive negative slope of difference frequency band to auxiliary platform
Linear FM signal S1System delay time DelayMain hairIt is linear that the positive negative slope of difference frequency band that main platform is sent is received with auxiliary platform
FM signal S1System delay time DelayPair is receivedThe sum of, Δ tbIndicate that auxiliary platform sends the positive negative slope line of difference frequency band to main platform
Property FM signal S2System delay time DelayPair hairThe positive negative slope of difference frequency band that auxiliary platform is sent is received with main platform linearly to adjust
Frequency signal S2System delay time DelayMain receiptsThe sum of, R indicates that the distance between main platform and auxiliary platform, C indicate light propagation
Speed.
6. the measuring device of a kind of time and distance, which is characterized in that including：
Transceiver module is instructed, for sending measurement instruction to auxiliary platform, and receives the response instruction of auxiliary platform return；
Sending module, for sending the positive negative slope linear FM signal S of difference frequency band to auxiliary platform1, the difference that receives auxiliary platform will
The positive negative slope linear FM signal S of difference frequency band that the positive negative slope linear FM signal of frequency band and the auxiliary platform generate1' carry out
Mixing, and determine the frequency of the first mixed frequency signal, wherein the positive negative slope linear frequency modulation letter of the difference frequency band that the auxiliary platform generates
Number S1' it is that the auxiliary platform returns and postpones the first preset time after response instruction and generate；
Signal receiving module, for receiving the positive negative slope linear FM signal S of difference frequency band of auxiliary platform transmission2, wherein difference frequency band
Positive negative slope linear FM signal S2It is the auxiliary platform after the frequency for determining the first mixed frequency signal, is sent to main platform
's；
Generation module, for sending the positive negative slope linear FM signal S of difference frequency band to auxiliary platform1After postpone the second preset time,
Generate the positive negative slope linear FM signal S of difference frequency band2'；
Frequency measurement module, the positive negative slope linear FM signal S of difference frequency band for will receive2The difference frequency band locally generated is positive and negative
Slope linear FM signal S2' be mixed, determine the frequency of the second mixed frequency signal；
Data reception module, the positive negative slope linear FM signal S of generation difference frequency band sent for receiving the auxiliary platform1' when
It carves, send the positive negative slope linear FM signal S of difference frequency band2At the time of, the first mixed frequency signal frequency；
Measurement module, for according to the transmission positive negative slope linear FM signal S of difference frequency band1At the time of, the auxiliary platform generate difference frequency
With positive negative slope linear FM signal S1' at the time of, the auxiliary platform send the positive negative slope linear FM signal S of difference frequency band2When
It carves, the main platform generates the positive negative slope linear FM signal S of difference frequency band2' at the time of, first mixed frequency signal frequency with
And second mixed frequency signal frequency, measure the clocking error and distance between the main platform and auxiliary platform.
7. device as claimed in claim 6, which is characterized in that the positive negative slope linear FM signal S of difference frequency band1、S1'、S2、S2'
Parameter it is identical, and frequency difference is greater than after mixing between two frequency bands of the positive negative slope linear FM signal of any difference frequency band first is mixed
The frequency of the frequency of frequency signal and the second mixed frequency signal.
8. device as claimed in claim 6, which is characterized in that the frequency measurement module is specifically used for, the difference frequency band that will be received
Positive negative slope linear FM signal S2The positive negative slope linear FM signal S of the difference frequency band locally generated2' be mixed, obtain
Two mixed frequency signals carry out analog-to-digital conversion to second mixed frequency signal and frequency measurement are handled, obtain the frequency of the second mixed frequency signal.
9. device as claimed in claim 6, which is characterized in that the data reception module is specifically used for, and sends to auxiliary platform
Measurement result inquiry instruction receives what auxiliary platform was sent according to the measurement result inquiry instruction：Generate the positive negative slope of difference frequency band
Linear FM signal S1' at the time of, send the positive negative slope linear FM signal S of difference frequency band2At the time of, the first mixed frequency signal frequency
Rate.
10. device as claimed in claim 7, which is characterized in that the measurement module is specifically used for, according to formulaWith
Measure the clocking error and distance between the main platform and auxiliary platform, wherein δtIndicate between main platform and auxiliary platform when
Clock error, t1Indicate that main platform sends S to auxiliary platform1At the time of, t1' indicate that auxiliary platform generates S1' at the time of, f1' indicate first
The frequency of mixed frequency signal, K indicate the positive negative slope linear FM signal S of difference frequency band1、S1'、S2、S2' chirp rate, t2Indicate master
Platform generates S2' at the time of, f2Indicate the frequency of the second mixed frequency signal, t2' indicate that auxiliary platform sends S to main platform2At the time of,
ΔtaIndicate that main platform sends the positive negative slope linear FM signal S of difference frequency band to auxiliary platform1System delay time DelayMain hairWith
Auxiliary platform receives the positive negative slope linear FM signal S of difference frequency band that main platform is sent1System delay time DelayPair is receivedThe sum of,
ΔtbIndicate that auxiliary platform sends the positive negative slope linear FM signal S of difference frequency band to main platform2System delay time DelayPair hairWith
Main platform receives the positive negative slope linear FM signal S of difference frequency band that auxiliary platform is sent2System delay time DelayMain receiptsThe sum of, R
Indicate that the distance between main platform and auxiliary platform, C indicate the speed of light propagation.
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| CN103501160A (en) * | 2013-09-22 | 2014-01-08 | 北京无线电计量测试研究所 | Phase compensation method for frequency conversion time delay calibration system |
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| CN103501160A (en) * | 2013-09-22 | 2014-01-08 | 北京无线电计量测试研究所 | Phase compensation method for frequency conversion time delay calibration system |
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