CN109490912A - GPS antenna switching method, storage medium and GPS device - Google Patents
GPS antenna switching method, storage medium and GPS device Download PDFInfo
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- CN109490912A CN109490912A CN201811436057.0A CN201811436057A CN109490912A CN 109490912 A CN109490912 A CN 109490912A CN 201811436057 A CN201811436057 A CN 201811436057A CN 109490912 A CN109490912 A CN 109490912A
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Classifications
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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
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/13—Receivers
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- Radar, Positioning & Navigation (AREA)
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- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Position Fixing By Use Of Radio Waves (AREA)
Abstract
The invention discloses a kind of GPS antenna switching method, storage medium and GPS device, the GPS antenna switching method is comprising steps of start and pass through the GPS antenna block search satellite ephemeris signal of default；After the average value for calculating the carrier-to-noise ratio of the satellite ephemeris signal for the preset quantity that the GPS antenna block search defaulted arrives, it is switched to other GPS antenna modules；It is sequentially completed the calculating of the average value of the carrier-to-noise ratio of the satellite ephemeris signal for the preset quantity that all GPS antenna block search arrive；The maximum GPS antenna module of average value for choosing the carrier-to-noise ratio of satellite ephemeris signal for searching preset quantity is work GPS antenna module, and realizes GPS positioning by work GPS antenna module.The present invention in GPS device use process by monitoring the performance of each GPS antenna module, and then the GPS antenna that can choose best performance is positioned, and reaches most accurately and reliably locating effect.
Description
Technical field
The present invention relates to GPS technology field, in particular to a kind of GPS antenna switching method, storage medium and GPS device.
Background technique
With the development of communication technology, have GPS(Global Positioning System global positioning system) as
The various portable devices such as mobile phone, tablet computer have become the essential equipment of people.
GPS satellite signal must be received by special GPS antenna when such portable device uses GPS function, and
By the positioning for carrying out realization equipment after analytical calculation to satellite-signal.It, may in equipment in order to preferably receive GPS signal
There are the GPS antennas of multiple and different positions, and by switching over GPS antenna to which the best GPS of received signal strength believes
Number.In the existing disclosed technology switched over about GPS multiple antennas, typically just according to such as gravity sensor device
Feedback define equipment usage scenario and directly switching GPS antenna, can not the GPS performance of reference device in actual use come into
The switching of row GPS antenna causes equipment to be unable to reach optimal locating effect.
Thus the prior art could be improved and improve.
Summary of the invention
Place in view of above-mentioned deficiencies of the prior art, the purpose of the present invention is to provide a kind of GPS antenna switching method, is deposited
Storage media and GPS device can monitor the performance of each GPS antenna in the use process of GPS device, and then select optimal
GPS antenna is positioned.
In order to achieve the above object, this invention takes following technical schemes:
A kind of GPS antenna switching method, comprising the following steps:
Start and pass through the GPS antenna block search satellite ephemeris signal of default；
After the average value for calculating the carrier-to-noise ratio of the satellite ephemeris signal for the preset quantity that the GPS antenna block search defaulted arrives, cut
Change to other GPS antenna modules；
It is sequentially completed the average value of the carrier-to-noise ratio of the satellite ephemeris signal for the preset quantity that all GPS antenna block search arrive
It calculates；
The maximum GPS antenna module of average value for choosing the carrier-to-noise ratio of satellite ephemeris signal for searching preset quantity is work
GPS antenna module, and GPS positioning is realized by work GPS antenna module.
In the GPS antenna switching method, the GPS antenna block search for calculating default to preset quantity defend
After star goes through the average value of the carrier-to-noise ratio of signal, the step of being switched to other GPS antenna modules, is specifically included:
Judge whether the GPS antenna module of default searches the Satellite than or equal to preset quantity in the first preset time
Go through signal；
If so, being switched to after calculating the average value of the carrier-to-noise ratio of satellite ephemeris signal of the highest preset quantity of carrier-to-noise ratio
Other GPS antenna modules；
If it is not, being then directly switch to other GPS antenna modules.
It is described to choose the carrier-to-noise ratio for searching the satellite ephemeris signal of preset quantity in the GPS antenna switching method
Average value maximum GPS antenna module be work GPS antenna module, and GPS positioning is realized by work GPS antenna module
After step, further comprise the steps of:
The real-time carrier-to-noise ratio that one action GPS antenna module is calculated at interval of the second preset time, judges work GPS antenna module
Highest carrier-to-noise ratio and the difference of its real-time carrier-to-noise ratio whether be greater than or equal to preset difference value；
If so, be sequentially completed the satellite ephemeris signal for the preset quantity that other all GPS antenna block search arrive again
The calculating of the average value of carrier-to-noise ratio, and choose new work GPS module；
If it is not, then continuing through work GPS antenna module realizes GPS positioning.
In the GPS antenna switching method, the starting simultaneously passes through the GPS antenna block search satellite ephemeris of default letter
Number the step of after, further comprise the steps of:
To the GPS antenna block search of default to satellite ephemeris signal be filtered.
In the GPS antenna switching method, the starting simultaneously passes through the GPS antenna block search satellite ephemeris of default letter
Number the step of after, further comprise the steps of:
To the GPS antenna block search of default to satellite ephemeris signal amplify processing.
In the GPS antenna switching method, the satellite ephemeris signal of the preset quantity is 4 satellite ephemeris signals.
In the GPS antenna switching method, first preset time is 15 seconds.
A kind of non-transient computer readable storage medium, which is characterized in that it is stored with computer executable instructions, described
Computer executable instructions be set as any of the above one described in GPS antenna switching method.
A kind of GPS device is provided with multiple GPS antennas, the GPS device in the GPS device further include:
Processor；And
With the radio communication circuit of the processor and multiple GPS antenna communication connections；And
The memory being connect with the processor communication；Wherein,
The memory is stored with the instruction that can be executed by the processor, and described instruction is executed by the processor, so that institute
State GPS antenna switching method described in processor execution any of the above one.
In the GPS device, the radio communication circuit includes multiple GPS days corresponding with multiple GPS antennas respectively
Wire module, the GPS antenna module includes first filter, second filter and low-noise amplifier, and GPS antenna is received
GPS signal is filtered by first filter and second filter and amplifies place by low-noise amplifier
It is output in processor after reason.
Compared to the prior art, a kind of GPS antenna switching method, storage medium and GPS device provided by the invention, it is described
GPS antenna switching method is comprising steps of start and pass through the GPS antenna block search satellite ephemeris signal of default；Calculate default
The average value of the carrier-to-noise ratio of the satellite ephemeris signal of preset quantity that arrives of GPS antenna block search after, be switched to other GPS
Anneta module；It is sequentially completed the flat of the carrier-to-noise ratio of the satellite ephemeris signal for the preset quantity that all GPS antenna block search arrive
The calculating of mean value；Choose the maximum GPS antenna module of average value for searching the carrier-to-noise ratio of satellite ephemeris signal of preset quantity
For work GPS antenna module, and by work GPS antenna module realize GPS positioning.The present invention in GPS device by using
The performance of each GPS antenna module is monitored in journey, and then the GPS antenna that can choose best performance is positioned, reach most accurate
Reliable locating effect.
Detailed description of the invention
Fig. 1 is the flow chart of GPS antenna switching method provided by the invention.
Fig. 2 is the flow chart of step S200 in GPS antenna switching method provided by the invention.
Fig. 3 is the flow chart in GPS antenna switching method provided by the invention after step S400.
Fig. 4 is the carrier-to-noise ratio comparison diagram of each GPS antenna module in GPS device in preferred embodiment provided by the invention.
Fig. 5 is the modular structure schematic diagram of GPS device in preferred embodiment provided by the invention.
Fig. 6 is the modular structure schematic diagram of the radio communication circuit of GPS device in preferred embodiment provided by the invention.
Fig. 7 is the modular structure schematic diagram of the GPS antenna module of GPS device in preferred embodiment provided by the invention.
Specific embodiment
The present invention provides a kind of GPS antenna switching method, storage medium and GPS device, to make the purpose of the present invention, technology
Scheme and effect are clearer, clear, and the present invention is described in more detail as follows in conjunction with drawings and embodiments.It should manage
Solution, described herein specific examples are only used to explain the present invention, is not intended to limit the present invention.
GPS antenna switching method provided by the invention is based on the GPS device with GPS positioning system, such as mobile phone, plate electricity
Brain or other mobile devices.The more GPS antennas for being internally provided with different direction of the GPS device, and by with GPS days
The work of the corresponding GPS antenna module control GPS antenna of line.Referring to Fig. 1, be the flow chart of the GPS antenna switching method,
Itself the following steps are included:
S100, starting simultaneously pass through the GPS antenna block search satellite ephemeris signal of default；
The average value of the carrier-to-noise ratio of the satellite ephemeris signal for the preset quantity that S200, the GPS antenna block search for calculating default arrive
Afterwards, other GPS antenna modules are switched to；
S300, be sequentially completed the preset quantity that all GPS antenna block search arrive satellite ephemeris signal carrier-to-noise ratio it is flat
The calculating of mean value；
S400, the maximum GPS antenna module of average value for choosing the carrier-to-noise ratio of satellite ephemeris signal for searching preset quantity are
Work GPS antenna module, and realizes GPS positioning by work GPS antenna module.
Wherein, GPS satellite ephemeris refers to satellite-orbit information or a certain moment orbit parameter and its variability or a certain moment
After satellite position and its change rate, i.e. GPS device observe the exact position of satellite, for the positioning of itself.Due to setting
For at least needing to observe 4 satellites when being positioned, i.e., at least need to receive 4 satellite ephemeris signals.Therefore it will be described pre-
If the satellite ephemeris signal of quantity is set as 4 satellite ephemeris signals.It certainly, can also in order to preferably be positioned to equipment
4 or more, such as 5,6 are set by preset quantity.
Carrier-to-noise ratio (carrier/noise, unit dBHz) is the ratio of radiofrequency signal and noise before demodulating, and high load is made an uproar
Than better network acceptance rate, better network communication quality and better network reliability can be provided.Therefore, GPS is defended
The carrier-to-noise ratio that star goes through signal is higher, and the positioning of GPS device is more accurate and reliable.GPS device is by using GPS positioning function
When, the average value of the carrier-to-noise ratio of the received 4 GPS satellites ephemeris signal of each GPS antenna module is calculated first, is chosen later
The highest GPS antenna of carrier-to-noise ratio is positioned, and is achieved that GPS days optimal to performance without devices such as gravity sensors
The selection of line.
Before step S100, further include the steps that GPS device starts GPS module.GPS device is determined according to user first
Position setting sends positioning instruction from processor to GPS module, restarts the GPS antenna block search of default later and receive GPS
Satellite ephemeris signal.The work GPS that the GPS antenna module of default is finally selected when can carry out GPS positioning by GPS device last time
Anneta module is determined.
Meanwhile after step sloo, the satellite ephemeris letter arrived to the GPS antenna block search of default is further comprised the steps of:
It number is filtered；And further comprise the steps of: to the GPS antenna block search of default to satellite ephemeris signal amplify
Processing.It, can be convenient for the subsequent satellite ephemeris letter received to GPS antenna module by being filtered amplification to satellite ephemeris signal
Number carry out carrier-to-noise ratio calculating.
Further, referring to Fig. 2, the step S200 is specifically included:
S210, judge whether the GPS antenna module of default searches than or equal to preset quantity in the first preset time
Satellite ephemeris signal；
S220, if so, calculate the highest preset quantity of carrier-to-noise ratio satellite ephemeris signal carrier-to-noise ratio average value after, cut
Change to other GPS antenna modules；
S230, if it is not, being then directly switch to other GPS antenna modules.
GPS module switches GPS antenna module, the quantity root of the N of hilted broadsword N throw switch by control hilted broadsword N throw switch SPNT
Factually GPS antenna module number set by border is selected.In the particular embodiment, after starting GPS module, SPNT switching
To the GPS antenna module of default.One shares 4 GPS antenna 1 ~ GPS antenna of module modules 4 in GPS device, defaults GPS antenna mould
Block is GPS antenna module 2, sets Rule of judgment as 4 satellite ephemeris signals, sets the first preset time as 15 seconds.
Fig. 4 is the carrier-to-noise ratio comparison diagram of each GPS antenna module provided in this embodiment, first by calculating carrier-to-noise ratio CN0
The average value of highest four satellite ephemeris signals.Carrier-to-noise ratio highest four that current GPS antenna module 2 is such as calculated defend
After star goes through the average value of signal, it is set to CN0_2；Then switch and traverse all GPS antenna modules, obtain CN0_1 ~
CN0_N, the present embodiment are CN0_1 ~ CN0_4, select the maximum GPS antenna module of average value.It can be seen that GPS antenna module 2 in Fig. 4
The average value of CN0_2 be that 38.5dBHz higher than the CN0 value of other GPS antenna modules then selects GPS antenna module 2 for work
GPS antenna module.
Further, referring to Fig. 3, being further comprised the steps of: after the step S400
S500, the real-time carrier-to-noise ratio that one action GPS antenna module is calculated at interval of the second preset time, judge work GPS days
Whether the highest carrier-to-noise ratio of wire module and the difference of its real-time carrier-to-noise ratio are greater than or equal to preset difference value；
S600, if so, be sequentially completed again the preset quantity that other all GPS antenna block search arrive satellite ephemeris letter
Number carrier-to-noise ratio average value calculating, and choose new work GPS module；
S700, if it is not, then continue through work GPS antenna module realize GPS positioning.
Second preset time can be set according to the actual situation, such as 0.1s, 0.5s or 1s.Specific real
It applies in example, preset difference value △ CN0 is 10dBHz.When the value of the CN0_N of work GPS antenna module is deteriorated than or equal to 10dBHz
When, then it is switched to all other GPS antenna module again and calculates carrier-to-noise ratio, until obtaining the best GPS antenna mould of performance
Block, and it is set to new work GPS antenna module.
Therefore, the GPS antenna switching method can judge that current device is each according to the truth locating for GPS device
The performance of GPS antenna, and then select the GPS antenna of best performance and optimal GPS performance is provided, the GPS letter for allowing it to be received
Number more preferably, convenient for keeping GPS device more accurate and reliable when positioning position.Meanwhile if GPS device use state or field
The degradation that variation leads to the GPS antenna module on the same day has occurred in scape, can be switched with real-time perfoming and select other performance more
Good GPS antenna module is positioned, and has apparent reference.
The present invention also provides a kind of non-transient computer readable storage mediums, are stored with computer executable instructions, institute
State the GPS antenna switching method that computer executable instructions are arranged to carry out in above-described embodiment.
The present invention also provides a kind of GPS devices.The GPS device can execute above-described GPS switching method step.
As shown in figure 5, multiple GPS antennas 10 are provided in the GPS device (such as smart phone), and further include:
At least one processor 20, i.e. central processing unit (processor), in figure by taking a central processing unit as an example；Display screen
30；Memory 40(memory)；And radio communication circuit 50, it can also include communication interface 60(Communications
Interface), input-output equipment 70 and bus 80.Wherein, antenna 10, central processing unit 20, display screen 30, memory 40,
Radio communication circuit 50, communication interface 60 and input-output equipment 70 can complete mutual communication by bus 80.Display
Screen 30 is touch display, be set as preset user in display initial setting mode guide interface and automatically prompting user into
The setting of row GPS positioning.Communication interface 60 can transmit information.Processor 10 can call the logical order in memory, to hold
Method in row above-described embodiment.
In addition, the logical order in above-mentioned memory 40 can be realized and as only by way of SFU software functional unit
Vertical product when selling or using, can store in a computer readable storage medium.
The all or part of the steps of above-described embodiment may be implemented by hardware, and can also instruct correlation by program
Hardware complete, which can be stored in a computer readable storage medium, and storage medium can be non-transient storage Jie
Matter, including USB flash disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random
Access Memory, RAM), a variety of media that can store program code of disk or CD etc., be also possible to transient state storage
Medium.
Input-output equipment 70 is defeated to the instruction input of GPS device and the information of GPS device for user in GPS device
Out, can specifically include key, control stick, keyboard, microphone, loudspeaker, vibrator, camera, sensor and other refer to
Show device, USB interface etc..
Referring to Fig. 6, radio communication circuit 50 includes for carrying out GPS positioning setting and the GPS module 51 of control, hilted broadsword
N throw switch 52 and respectively multiple GPS antenna modules 53 corresponding with multiple GPS antennas.Processor 20 and GPS module 51 are right
GPS information swaps processing, and processor 20 switched over also according to the switch of algorithm control hilted broadsword N throw switch 52 it is different
The work of GPS antenna module.
In addition, radio communication circuit 50 may also include by one or more integrated circuits, power amplifier circuit, low noise
Radio-frequency transceiver circuitry that input amplifier, passive RF component, one or more antenna are formed and for handling RF wireless communication
Number other circuits；It also may include GPS receiver, WIFI/BT transceiver, cellular communication transceiver and corresponding radio circuit
With antenna module (being to show in figure), because the set-up mode of such circuit is well known to those skilled in the art, therefore of the invention
This will not be repeated here.
Please continue to refer to Fig. 7, the GPS antenna module 53 specifically includes first filter 531,532 and of second filter
Low-noise amplifier 533, the received GPS signal of GPS antenna are filtered by first filter 531 and second filter 532
It handles and is output in processor 20 after amplifying processing by low-noise amplifier 533.
I.e. the input terminal of first filter 531 connects GPS antenna 10, and the output end of first filter 531 connects low noise
The input terminal of amplifier 533, the input terminal of the output end connection second filter 532 of low-noise amplifier 533, second filter
532 output end connects processor 20.First filter and second filter filter out the dry of non-GPS signal to GPS frequency range band logical
It disturbs；Low-noise amplifier then amplifies GPS signal.
In conclusion the present invention provides a kind of GPS antenna switching method, storage medium and GPS device, described GPS days
Line switching method is comprising steps of start and pass through the GPS antenna block search satellite ephemeris signal of default；Calculate the GPS of default
After the average value of the carrier-to-noise ratio of the satellite ephemeris signal for the preset quantity that Anneta module searches, it is switched to other GPS antennas
Module；It is sequentially completed the average value of the carrier-to-noise ratio of the satellite ephemeris signal for the preset quantity that all GPS antenna block search arrive
Calculating；The maximum GPS antenna module of average value for choosing the carrier-to-noise ratio of satellite ephemeris signal for searching preset quantity is work
Make GPS antenna module, and GPS positioning is realized by work GPS antenna module.The present invention passes through in GPS device use process
It monitors the performance of each GPS antenna module in real time, and then the GPS antenna that can choose best performance is positioned, reaches most accurate
Reliable locating effect.
It, can according to the technique and scheme of the present invention and its hair it is understood that for those of ordinary skills
Bright design is subject to equivalent substitution or change, and all these changes or replacement all should belong to the guarantor of appended claims of the invention
Protect range.
Claims (10)
1. a kind of GPS antenna switching method, which comprises the steps of:
Start and pass through the GPS antenna block search satellite ephemeris signal of default；
After the average value for calculating the carrier-to-noise ratio of the satellite ephemeris signal for the preset quantity that the GPS antenna block search defaulted arrives, cut
Change to other GPS antenna modules；
It is sequentially completed the average value of the carrier-to-noise ratio of the satellite ephemeris signal for the preset quantity that all GPS antenna block search arrive
It calculates；
The maximum GPS antenna module of average value for choosing the carrier-to-noise ratio of satellite ephemeris signal for searching preset quantity is work
GPS antenna module, and GPS positioning is realized by work GPS antenna module.
2. GPS antenna switching method according to claim 1, which is characterized in that the GPS antenna module for calculating default
After the average value of the carrier-to-noise ratio of the satellite ephemeris signal of the preset quantity searched, it is switched to the step of other GPS antenna modules
Suddenly it specifically includes:
Judge whether the GPS antenna module of default searches the Satellite than or equal to preset quantity in the first preset time
Go through signal；
If so, being switched to after calculating the average value of the carrier-to-noise ratio of satellite ephemeris signal of the highest preset quantity of carrier-to-noise ratio
Other GPS antenna modules；
If it is not, being then directly switch to other GPS antenna modules.
3. GPS antenna switching method according to claim 2, which is characterized in that the selection searches preset quantity
The maximum GPS antenna module of the average value of the carrier-to-noise ratio of satellite ephemeris signal is work GPS antenna module, and passes through work GPS
After Anneta module realizes the step of GPS positioning, further comprise the steps of:
The real-time carrier-to-noise ratio that one action GPS antenna module is calculated at interval of the second preset time, judges work GPS antenna module
Highest carrier-to-noise ratio and the difference of its real-time carrier-to-noise ratio whether be greater than or equal to preset difference value；
If so, be sequentially completed the satellite ephemeris signal for the preset quantity that other all GPS antenna block search arrive again
The calculating of the average value of carrier-to-noise ratio, and choose new work GPS module；
If it is not, then continuing through work GPS antenna module realizes GPS positioning.
4. GPS antenna switching method according to claim 3, which is characterized in that the starting simultaneously passes through the GPS of default
After the step of Anneta module search of satellite ephemeris signal, further comprise the steps of:
To the GPS antenna block search of default to satellite ephemeris signal be filtered.
5. GPS antenna switching method according to claim 4, which is characterized in that the starting simultaneously passes through GPS days of default
After the step of wire module search of satellite ephemeris signal, further comprise the steps of:
To the GPS antenna block search of default to satellite ephemeris signal amplify processing.
6. GPS antenna switching method according to claim 4, which is characterized in that the satellite ephemeris of the preset quantity is believed
Number be 4 satellite ephemeris signals.
7. GPS antenna switching method according to claim 4, which is characterized in that first preset time is 15 seconds.
8. a kind of non-transient computer readable storage medium, which is characterized in that it is stored with computer executable instructions, the meter
Calculation machine executable instruction is arranged to carry out GPS antenna switching method described in any one of claim 1-8.
9. a kind of GPS device, multiple GPS antennas are provided in the GPS device, which is characterized in that the GPS device is also wrapped
It includes:
Processor；And
With the radio communication circuit of the processor and multiple GPS antenna communication connections；And
The memory being connect with the processor communication；Wherein,
The memory is stored with the instruction that can be executed by the processor, and described instruction is executed by the processor, so that institute
It states processor perform claim and requires GPS antenna switching method described in any one of 1-7.
10. GPS device according to claim 9, which is characterized in that the radio communication circuit include respectively with it is multiple
The corresponding multiple GPS antenna modules of GPS antenna, the GPS antenna module includes first filter, second filter and low noise
Amplifier, the received GPS signal of GPS antenna are filtered by first filter and second filter and by low
Noise amplifier is output in processor after amplifying processing.
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| CN201811436057.0A CN109490912A (en) | 2018-11-28 | 2018-11-28 | GPS antenna switching method, storage medium and GPS device |
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| CN201811436057.0A CN109490912A (en) | 2018-11-28 | 2018-11-28 | GPS antenna switching method, storage medium and GPS device |
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| CN113905116A (en) * | 2021-09-30 | 2022-01-07 | 青岛海信移动通信技术股份有限公司 | Antenna switching method based on double positioning chips and multi-antenna terminal equipment |
| CN113905116B (en) * | 2021-09-30 | 2023-09-19 | 青岛海信移动通信技术有限公司 | Antenna switching method based on double positioning chips and multi-antenna terminal equipment |
| CN117270001A (en) * | 2023-08-11 | 2023-12-22 | 北京华力创通科技股份有限公司 | Satellite signal receiving and transmitting terminal, method and device and electronic equipment |
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