CN108983260A - A kind of GPS of low cost and the conducted signal quality verification device of Beidou - Google Patents
A kind of GPS of low cost and the conducted signal quality verification device of Beidou Download PDFInfo
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- CN108983260A CN108983260A CN201810677398.0A CN201810677398A CN108983260A CN 108983260 A CN108983260 A CN 108983260A CN 201810677398 A CN201810677398 A CN 201810677398A CN 108983260 A CN108983260 A CN 108983260A
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- 238000012795 verification Methods 0.000 title claims abstract description 17
- 238000012360 testing method Methods 0.000 claims abstract description 28
- 241000931526 Acer campestre Species 0.000 claims description 12
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000007547 defect Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000010287 polarization Effects 0.000 description 2
- 238000010923 batch production Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
Classifications
-
- 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
- G01S19/23—Testing, monitoring, correcting or calibrating of receiver elements
-
- 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
- G01S19/23—Testing, monitoring, correcting or calibrating of receiver elements
- G01S19/235—Calibration of receiver components
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- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Position Fixing By Use Of Radio Waves (AREA)
Abstract
The present invention provides the conducted signal quality verification devices of a kind of GPS of low cost and Beidou, including GNSS receiving antenna, adjustable gain GNSS signal amplifier, GNSS signal one divides more power splitters, Standard Machine, machine and PC host computer to be measured, the output end of GNSS receiving antenna is connect with the input terminal of adjustable gain GNSS signal amplifier, the output end of adjustable gain GNSS signal amplifier divides the input terminal of more power splitters to connect with GNSS signal one, the GNSS signal one divides the output end of more power splitters to connect by standard branch with the Standard Machine, the Standard Machine is connect with the PC host computer, the GNSS signal one divides the output end of more power splitters to connect by testing branch with the machine to be measured, machine to be measured is connect with PC host computer.The beneficial effects of the present invention are: can satisfy the needs of the positioning performance of factory's producing line batch testing receiver, the quality of bulk article is advantageously ensured that, cost is relatively low.
Description
Technical field
The present invention relates to the conduction of the GPS and Beidou of conducted signal quality verification device more particularly to a kind of low cost letters
Number quality verification device.
Background technique
The development of GPS and Beidou industry and importance are growing day by day, and consequent is the survey to GPS and Beidou receiver
Examination requires to be increasingly stringenter, thus the performance of accurate evaluation product.
GPS and Beidou receiver are needed to test the positioning performance of receiver, be looked for after factory carries out SMT patch
There is the receiver of production defect, to ensure the quality of lot of receiver, the wherein conducted signal matter of GPS and Beidou receiver out
Amount is to measure an important indicator of receiver positioning performance.
Current GPS and Beidou conducted signal needs are tested in electromagnetic shielding chamber, are simulated using vector signal source
Satellite emission signal is sent to receiver by the good radio frequency line of shielding, thus judges GPS and Beidou receiver
Conducted signal quality.The advantages of program is that reliability is very high, but supports the vector signal generator of simulation satellite signal
Price is higher, is not suitable for the large batch of buying test of producing line and uses, and cannot achieve more receivers and carry out batch testing, cannot
Meet the needs of factory's producing line batch production.
GPS and Beidou receiver are produced in batches for factory's producing line, the conduction of the GPS and Beidou of a kind of low cost is needed to believe
Number quality verification device, carrys out the positioning performance of batch testing receiver, guarantees the quality of bulk article.
Summary of the invention
In order to solve the problems in the prior art, the present invention provides the conducted signals of a kind of GPS of low cost and Beidou
Quality verification device.
The present invention provides the conducted signal quality verification devices of a kind of GPS of low cost and Beidou, including GNSS to receive
Antenna, adjustable gain GNSS signal amplifier, GNSS signal one divide more power splitters, Standard Machine, machine to be measured and PC host computer,
In, the output end of the GNSS receiving antenna is connect with the input terminal of the adjustable gain GNSS signal amplifier, described adjustable
The output end of gain G NSS signal amplifier divides the input terminal of more power splitters to connect with the GNSS signal one, the GNSS signal
The output end of power splitter more than one point is connect by standard branch with the Standard Machine, and the Standard Machine and the PC host computer connect
Connect, the GNSS signal one divides the output ends of more power splitters to connect by testing branch with the machine to be measured, the machine to be measured and
The PC host computer connection.
As a further improvement of the present invention, the output end of the GNSS receiving antenna pass through band shielded radio frequency line with it is described
The input terminal of adjustable gain GNSS signal amplifier connects, and the output end of the adjustable gain GNSS signal amplifier passes through band screen
It covers radio frequency line and divides the input terminal of more power splitters to connect with the GNSS signal one.
As a further improvement of the present invention, the standard branch includes the adjustable attenuator of standard branch, the standard
The input terminal of the adjustable attenuator of branch with shielded radio frequency line and the GNSS signal one by dividing the output end of more power splitters to connect
It connects, the output end of the adjustable attenuator of the standard branch is connect by radio-frequency maser with the input terminal of the Standard Machine.
As a further improvement of the present invention, the test branch includes adjustable attenuator, described to test the adjustable of branch
The input terminal of attenuator with the GNSS signal one with shielded radio frequency line by dividing the output end of more power splitters to connect, the test
The output end of the adjustable attenuator of branch is connect by radio-frequency maser with the input terminal of the machine to be measured.
As a further improvement of the present invention, the Standard Machine, machine to be measured pass through serial ports respectively and the PC host computer connects
It connects.
As a further improvement of the present invention, the GNSS signal one divides more power splitters to be that the GNSS signal one divides eight function
Divide device, the standard branch has one, and the test branch there are seven.
The beneficial effects of the present invention are: through the above scheme, more receivers may be implemented and carry out batch testing, Ke Yiman
The needs of the positioning performance of sufficient factory's producing line batch testing receiver, advantageously ensure that the quality of bulk article, cost is relatively low.
Detailed description of the invention
Fig. 1 is the schematic diagram of a kind of GPS of low cost of the present invention and the conducted signal quality verification device of Beidou.
Specific embodiment
The invention will be further described for explanation and specific embodiment with reference to the accompanying drawing.
As shown in Figure 1, a kind of GPS of low cost and the conducted signal quality verification device of Beidou, including GNSS receive day
Line 1, adjustable gain GNSS signal amplifier 2, GNSS signal one divide more power splitters, Standard Machine 5, machine to be measured 7 and PC host computer 8,
GNSS signal one divides more power splitters that can be preferably that GNSS signal one divides eight power splitters 3, wherein the GNSS receiving antenna 1
Output end is connect with the input terminal of the adjustable gain GNSS signal amplifier 2, the adjustable gain GNSS signal amplifier 2
Output end divides the input terminal of eight power splitters 3 to connect with the GNSS signal one, and the GNSS signal one divides the output of eight power splitters 3
End is connect by a standard branch with the Standard Machine 5, and the Standard Machine 5 is connect with the PC host computer 8, the GNSS letter
The output end of number one point of eight power splitter 3 is connect by seven test branches with the machine 7 to be measured, the machine 7 to be measured and the PC
Host computer 8 connects, and GNSS is Global Navigation Satellite System.
As shown in Figure 1, the output end of the GNSS receiving antenna 1 passes through band shielded radio frequency line and the adjustable gain GNSS
The input terminal of signal amplifier 2 connects, the output end of the adjustable gain GNSS signal amplifier 2 pass through band shielded radio frequency line with
The GNSS signal one divides the input terminal of eight power splitters 3 to connect.
As shown in Figure 1, the standard branch includes the adjustable attenuator 4 of standard branch, the adjustable of the standard branch declines
Subtract the input terminal of device 4 by dividing the output end of eight power splitters 3 to connect with the GNSS signal one with shielded radio frequency line, the standard
The output end of the adjustable attenuator 4 of branch is connect by radio-frequency maser with the input terminal of the Standard Machine 5, and the radio-frequency maser is preferably
For the special-purpose radio-frequency head of GPS and Beidou receiver pcb board.
As shown in Figure 1, the test branch includes adjustable attenuator 6, the input of the adjustable attenuator 6 of the test branch
End is described to test the adjustable of branch by dividing the output end of eight power splitters 3 to connect with the GNSS signal one with shielded radio frequency line
The output end of attenuator 6 connect by radio-frequency maser with the input terminal of the machine 7 to be measured, the radio-frequency maser be preferably be directed to GPS with
The special-purpose radio-frequency head of Beidou receiver pcb board.
As shown in Figure 1, the Standard Machine 5, machine to be measured 7 are connect by serial ports with the PC host computer 8 respectively.
As shown in Figure 1, the GNSS receiving antenna is using four whole world for covering BDS, GPS, GLONASS, GALILIE
Positioning system all frequency bands antenna, band support range are the L1/L2/L5 of GPS；The B1/B2/B3 of BDS；The L1/ of GLONASS
L2 ；The E1/E2/E5a/E5b of GALILEO.Antenna is designed using multiple feeds, is equipped with anti-multipath intercepter, is used waterproof, anti-purple
Outside line outer cover.The GNSS receiving antenna is mainly mounted in the depletion region that building upstairs faces sky, to guarantee
GNSS receiving antenna can receive the signal of more satellites
As shown in Figure 1, the adjustable gain GNSS signal amplifier 2 is connected by shielded radio frequency line and GNSS receiving antenna 1.
The 2 band support range of adjustable gain GNSS signal amplifier is the L1/L2/L5 of GPS；The B1/B2/B3 of BDS；It is described
Adjustable gain GNSS signal amplifier 2 maximum gain be 54db.The interference of the adjustable gain GNSS signal amplifier 2
Inhibit to be greater than 20dB(f0 ± 100MHz), reflection loss -14dB(i.e. standing-wave ratio≤1.5).The adjustable gain GNSS letter
Number 2 main function of amplifier is the satellite-signal for amplifying GNSS receiving antenna and receiving.The adjustable gain GNSS signal is put
Big device 2 can compensate the satellite-signal of the transmission loss in long range radio frequency line by adjusting itself gain amplifier.
As shown in Figure 1, the GNSS signal one divides eight power splitters 3 to pass through shielded radio frequency line and adjustable gain GNSS signal
Amplifier 2 connects.The GNSS signal one divides eight power splitters 3 to be an a input, the GNSS signal equipment of 8 output.Institute
The GNSS signal one stated divides eight power splitters 3 to be mainly used for distributing the satellite-signal come out from adjustable gain GNSS signal amplifier,
So that GNSS signal one divides 8 output port satellite-signal energy of eight power splitters equal.The GNSS signal one divides eight function
The satellite band for dividing device to be supported are as follows: GPS:L1, L2, L2C, L5；Glonass:G1,G2；Galileo:L1,E1,E2,E5
(E5a,E5b),E6；The isolation of Beidou2:B1, B2, B3, port are greater than 30dB.
As shown in Figure 1, the adjustable attenuator 6 of the adjustable attenuator 4 of one standard branch and seven test branches divides
Not Tong Guo shielded radio frequency line divide 8 output ports of eight power splitters 3 to connect together with GNSS signal one.Because per penetrating all the way
Frequency line can be variant.The effect of the adjustable attenuator 6 of the adjustable attenuator 4 and seven test branches of one standard branch
It is adjustment per GNSS signal all the way, so that the GNSS signal energy for reaching each radio-frequency maser is equal.
As shown in Figure 1,4, seven test branches of adjustable attenuator of 8 radio-frequency masers and a standard branch can
Controlled attenuator 6 is connected respectively to together, and is fixed on dedicated fixture.
As shown in Figure 1, the radio-frequency maser combination GPS and Beidou receiver pcb board is specially designed, shielding is good
It is good, the interference of outer bound pair GPS and Beidou receiver conducted signal quality are reduced, also avoids generating standard branch and test branch
Crosstalk.
As shown in Figure 1, the Standard Machine 5 is connected by radio-frequency maser and adjustable attenuator 4, receives GNSS signal one and divide eight
The GNSS signal of the one of port of power splitter 3 output.The Standard Machine 5 is measured by GPS and Beidou signal generator
It crosses, meets the GPS and Beidou receiver of the conducted signal quality index of GPS and Beidou.The Standard Machine 5 is in this system
The comparison machine of GNSS signal quality is functioned as, the conducted signal quality index of other machines 7 to be measured is by the Standard Machine
Signal quality is assessed as standard.
As shown in Figure 1, the Standard Machine 5 is connected by serial ports and the PC host computer 8, the Standard Machine 5 can be real
When the GNSS signal that receives and generate GNSS signal mass value, while GNSS signal mass value being transferred on PC by serial ports
It is shown in the form of histogram on the machine 8 of position, tester is facilitated to check.
As shown in Figure 1, seven machines 7 to be measured are connected by radio-frequency maser and adjustable attenuator 6 respectively, receive respectively
GNSS signal one divides the GNSS signal of the one of port output of eight power splitter 3.The machine to be measured 7 is to generate to come in producing line
GPS and Beidou receiver to be tested, abbreviation receiver.
As shown in Figure 1, seven machines 7 to be measured are connected by serial ports and the PC host computer 8 respectively, it is described to be measured
Machine 7 can real-time reception to GNSS signal and generate GNSS signal mass value, while by GNSS signal mass value by serial ports biography
It is defeated to being shown in the form of histogram on PC host computer 8.Tester comes using the signal quality value of Standard Machine 5 as standard
Distinguish the receiver that there is production defect.
A kind of GPS of low cost provided by the invention and the conducted signal quality verification device of Beidou, have the advantage that
(1) more receivers may be implemented and carry out batch testing, can satisfy the polarization of factory's producing line batch testing receiver
The needs of energy, advantageously ensure that the quality of bulk article, cost is relatively low, meets the polarization of factory's producing line batch testing receiver
The needs of energy, in time there is the receiver of production defect in discovery.
(2) signal energy of each GNSS signal output port is adjusted by adjustable attenuator 4,6, so that each
The signal energy of output port is equal, while strengthening shielding and reducing extraneous environmental disturbances, ensure that each receiver is surveyed
Try the consistency of link.
The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it cannot be said that
Specific implementation of the invention is only limited to these instructions.For those of ordinary skill in the art to which the present invention belongs, exist
Under the premise of not departing from present inventive concept, a number of simple deductions or replacements can also be made, all shall be regarded as belonging to of the invention
Protection scope.
Claims (6)
1. a kind of GPS of low cost and the conducted signal quality verification device of Beidou, it is characterised in that: receive day including GNSS
Line, adjustable gain GNSS signal amplifier, GNSS signal one divide more power splitters, Standard Machine, machine to be measured and PC host computer, wherein
The output end of the GNSS receiving antenna is connect with the input terminal of the adjustable gain GNSS signal amplifier, the adjustable gain
The output end of GNSS signal amplifier divides the input terminal of more power splitters to connect with the GNSS signal one, and the GNSS signal one is divided
The output end of more power splitters is connect by standard branch with the Standard Machine, and the Standard Machine is connect with the PC host computer, institute
Stating GNSS signal one divides the output end of more power splitters to connect by testing branch with the machine to be measured, the machine to be measured and the PC
Host computer connection.
2. the GPS of low cost according to claim 1 and the conducted signal quality verification device of Beidou, it is characterised in that:
The output end of the GNSS receiving antenna passes through the input terminal with shielded radio frequency line Yu the adjustable gain GNSS signal amplifier
The output end of connection, the adjustable gain GNSS signal amplifier passes through band shielded radio frequency line and the GNSS signal one divides more function
Divide the input terminal connection of device.
3. the GPS of low cost according to claim 1 and the conducted signal quality verification device of Beidou, it is characterised in that:
The standard branch includes the adjustable attenuator of standard branch, and the input terminal of the adjustable attenuator of the standard branch passes through band screen
It covers radio frequency line and divides the output end of more power splitters to connect with the GNSS signal one, the output of the adjustable attenuator of the standard branch
End is connect by radio-frequency maser with the input terminal of the Standard Machine.
4. the GPS of low cost according to claim 1 and the conducted signal quality verification device of Beidou, it is characterised in that:
The test branch includes adjustable attenuator, it is described test branch adjustable attenuator input terminal pass through band shielded radio frequency line with
The GNSS signal one divides the output end of more power splitters to connect, and the output end of the adjustable attenuator of the test branch passes through radio frequency
Head is connect with the input terminal of the machine to be measured.
5. the GPS of low cost according to claim 1 and the conducted signal quality verification device of Beidou, it is characterised in that:
The Standard Machine, machine to be measured pass through serial ports respectively and connect with the PC host computer.
6. the GPS of low cost according to claim 1 and the conducted signal quality verification device of Beidou, it is characterised in that:
The GNSS signal one divides more power splitters to be that the GNSS signal one divides eight power splitters, and the standard branch has one, the survey
Examination branch has seven.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810677398.0A CN108983260A (en) | 2018-06-27 | 2018-06-27 | A kind of GPS of low cost and the conducted signal quality verification device of Beidou |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810677398.0A CN108983260A (en) | 2018-06-27 | 2018-06-27 | A kind of GPS of low cost and the conducted signal quality verification device of Beidou |
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| Publication Number | Publication Date |
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| CN108983260A true CN108983260A (en) | 2018-12-11 |
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Family Applications (1)
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| CN201810677398.0A Pending CN108983260A (en) | 2018-06-27 | 2018-06-27 | A kind of GPS of low cost and the conducted signal quality verification device of Beidou |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109581416A (en) * | 2018-12-13 | 2019-04-05 | 中国电子科技集团公司第五十四研究所 | A kind of device for Beidou equipment batch testing |
| CN111130618A (en) * | 2019-12-11 | 2020-05-08 | 山东省科学院海洋仪器仪表研究所 | Beidou signal enhancement device and enhancement method |
| CN111443364A (en) * | 2020-03-27 | 2020-07-24 | 惠州市德赛西威智能交通技术研究院有限公司 | Vehicle-mounted positioning receiver precision testing method and system thereof |
| CN114994718A (en) * | 2022-05-27 | 2022-09-02 | 苏州浪潮智能科技有限公司 | Test method, system and device of GPS Beidou module and storage medium |
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