CN201138373Y - GPS signal testing apparatus - Google Patents
GPS signal testing apparatus Download PDFInfo
- Publication number
- CN201138373Y CN201138373Y CNU2007200599723U CN200720059972U CN201138373Y CN 201138373 Y CN201138373 Y CN 201138373Y CN U2007200599723 U CNU2007200599723 U CN U2007200599723U CN 200720059972 U CN200720059972 U CN 200720059972U CN 201138373 Y CN201138373 Y CN 201138373Y
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- gps
- gps signal
- proving installation
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Abstract
The utility model discloses a GPS signal tester which includes a GPS signal transmitter, a rotary test bench and a test piece; the GPS signal transmitter is used to transmit the test signal receivable by a GPS system; the rotary test bench is arranged in a certain distance from the GPS signal transmitter and can rotate along a certain direction at certain speed set before the test; the tested GPS system is fixed on the rotary test bench; the test piece is electrically connected with the GPS system during the test; with a signal receiving module, the test piece designed to be able to receive the test signal transmitted by the GPS signal transmitter and test the signal strength; the tester of the utility model can test the signal receiving effect when the GPS is at different positions, so that the test result is more accurate.
Description
Technical field
The utility model relates to a kind of signal-testing apparatus, particularly relates to a kind of gps signal proving installation.
Background technology
The application of gps satellite navigational system is increasingly extensive, and is widely applying at hand system such as PDA or mobile phone or the like in recent years, very important certainly for the measurement of received signal (Signal) especially.Measurement mode in the past, the field pattern nothing more than at antenna monomer test antenna in not having sound laboratory (Chamber) utilizes the gain of test antenna monomer to estimate system's received signal intensity.In the test of complete machine,, can only use general shielding box 10 (Shielding BOX) to do measurement at the direction of zenith because be limited to environment and existing test macro.
As shown in Figure 1, tested GPS integration system is positioned in the shielding box 10,, in this shielding box 10, transmits by a signal projector 11; Connect a proving installation simultaneously in this tested GPS integration system 12, it utilizes gain to go to calculate the reception situation of GPS integration system 12; Though such measurement mode can estimate the reception situation of system, but two blind spots are arranged, the firstth, in the integration of system, there is so-called noise (Noise) to disturb, if just with the reception situation that gains and go to the system of calculating, may ignore interference of noise and make measurement uncertain; The secondth, even if being done reception initiatively, the complete machine of integrating measures, but for fear of present test macro except recording the reception condition of zenith generally, can not record the reception situation of all directions, and use the nothing of the general shielding box 10 (Shielding BOX) and the standard of being not so good as to ring laboratory (Chamber), might have standing wave causes antenna to measure misalignment, we propose a new method of testing at this, make us can record the reception situation of all directions of the complete machine after the system combination.
Summary of the invention
The purpose of this utility model be propose a kind of multi-faceted, accurately test the gps signal proving installation of gps signal, unidirectional, the inexactness of proving installation before having solved.
The technical solution of the utility model is: a kind of gps signal proving installation, and it includes: a gps signal transmitter, in test, it can launch the receivable signal of gps system; One rotary test platform, but its be provided with and distance in this gps signal transmitter is separated with the signal transmission range mutually, this rotary test platform can rotate along level or vertical direction, and its movement locus and velocity of rotation can be set before test; But this tested gps system fixed placement makes things convenient for the test of each orientation signal effect of gps system on this rotary test platform; One test block, it is provided with in test and is electrically connected to this gps system; This test block is provided with, one signal receiving module, be used to receive test signal and the noise that this gps signal transmitter is launched, this test signal and noise are to receive in the signal receiving module that is sent to this test block again by gps system earlier, and this signal receiving module detects this test signal and noise, obtains signal and noise intensity value respectively.
The gps signal proving installation that the utility model structure is proposed, can conveniently record gps system and integrate the back signal receiving strength, also can clearly understand the field pattern of its signal receiving strength, make we can our GPS product of more accurate understanding in the reception situation of all directions, this is different from the field pattern that in the past measurement can only be surveyed single direction (zenith), and this proving installation can make that test result is more accurate.
Description of drawings
Fig. 1 is existing gps signal proving installation synoptic diagram.
Fig. 2 is the utility model gps signal proving installation synoptic diagram.
Fig. 3 is the test block structural representation of the utility model gps signal proving installation.
Embodiment
Below in conjunction with accompanying drawing in detail embodiment of the present utility model is described in detail.
Fig. 2 is the utility model gps signal proving installation synoptic diagram, as shown in the figure, a kind of gps signal proving installation, it includes: a gps signal transmitter 21, it is provided with H-V tolerance antenna 210 (H-VMeasurement Antenna), this gps signal transmitter 21 is in test, by these H-V tolerance antenna 210 emission gps systems 22 receivable signals.
One rotary test platform 23, its setting is separated with certain distance mutually with this gps signal transmitter 21, can set its movement locus and velocity of rotation before test, and it can be along level or vertical direction rotation; But these tested gps system 22 fixed placement make things convenient for the test in gps system 22 each orientation on this rotary test platform 23.
One test block 24, it is provided with in test and is electrically connected to this gps system 22; Fig. 3 is test block 24 structural representations of the utility model gps signal proving installation, as shown in the figure, this test block 24 is provided with, one signal receiving module 240, be used to receive test signal and the noise that this gps signal transmitter 21 is launched, this test signal and noise are to receive in the signal receiving module 240 that is sent to this test block 24 again by gps system 22 earlier, and 240 pairs of these test signals of this signal receiving module and noise detect, and obtain signal and noise intensity value respectively.
This test block 24 is provided with a ratio calculation module 241 in addition, and this ratio calculation module 241 is collected this signal receiving module 240 obtained signal and noise intensity value, and utilize formula: signal to noise ratio (S/N ratio) (CN)=signal intensity/noise intensity calculates snr value; This snr value can know that embodying gps system 22 signals receives situation, makes test result more accurate.
This test block 24 also is provided with a synchronous logging modle 242, this synchronous recording module 242 is connected to rotary test platform 23, can write down angle, the speed of rotary test platform 23 in level or vertical direction rotation, and the snr value of under this kind angle, speed conditions, testing; So, can make us both the field pattern and the signal to noise ratio (S/N ratio) size of complete machine can be understood totally in the distribution situation of all directions, we can draw reception situation actual after the system combination more accurately according to the method.
Above-mentioned each numerical value: angle, speed that rotary test platform 23 is rotated, signal and noise intensity value, test data results such as snr value can show by a display module 243 that is arranged at this test block 24.
The utility model test structure, being positioned over when test does not have in the laboratory 20 of sound (Chamber); At first, should be fixed on this rotary test platform 23 by tested gps system 22, and itself and test block 24 are electrically connected, and gps system 22 is in opening; Then, start this rotary test platform 23 and gps signal transmitter 21, this rotary test platform 23 can first horizontal direction vertical direction again, at the uniform velocity or the speed change rotation; In rotary course, this gps signal transmitter 21 continues emission gps system 22 receivable test signals all the time by H-V tolerance antenna 210; Be to utilize test block 24 again, the signal receiving function of gps system 22 detected, and data presentation is come out, make test result directly perceived, clear.
Claims (6)
1. gps signal proving installation is characterized in that it comprises:
One gps signal transmitter, it launches the receivable signal of gps system in test;
One rotary test platform, but it is provided with and this gps signal transmitter has the interior distance of signal transmission range, and it is rotatable; Place tested gps system on this rotary test platform;
One test block, it is electrically connected at this gps system in test; This test block is provided with, a signal receiving module, and it can receive the signal of being launched through this gps signal transmitter of gps system transmission, and detects signal intensity.
2. gps signal proving installation according to claim 1 is characterized in that, this test block is provided with a ratio calculation module in addition, calculates snr value.
3. gps signal proving installation according to claim 1 is characterized in that, this test block is provided with a synchronous logging modle again, record rotary test platform position and relevant position institute acceptance test signal intensity.
4. gps signal proving installation according to claim 1 is characterized in that this test block also is provided with a display module, shows test results.
5. gps signal proving installation according to claim 1 is characterized in that, this gps signal transmitter is provided with a signal emitting antenna.
6. gps signal proving installation according to claim 5 is characterized in that, this signal emitting antenna is a H-V tolerance antenna.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200599723U CN201138373Y (en) | 2007-11-23 | 2007-11-23 | GPS signal testing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200599723U CN201138373Y (en) | 2007-11-23 | 2007-11-23 | GPS signal testing apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201138373Y true CN201138373Y (en) | 2008-10-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200599723U Expired - Fee Related CN201138373Y (en) | 2007-11-23 | 2007-11-23 | GPS signal testing apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201138373Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104215978A (en) * | 2014-09-24 | 2014-12-17 | 重庆长安汽车股份有限公司 | Device and method for testing signal receiving performance of vehicle-mounted Beidou compatible GPS navigation antenna |
| CN104459724A (en) * | 2013-09-16 | 2015-03-25 | 神讯电脑(昆山)有限公司 | Inside-box and outside-box automatic test method for a GPS box |
| CN104820226A (en) * | 2015-04-29 | 2015-08-05 | 重庆长安汽车股份有限公司 | Test method for navigation signal intensity of automobile navigation system |
| TWI498568B (en) * | 2013-03-06 | 2015-09-01 | Lite On Electronics Guangzhou | Wireless testing system and testing method using the same |
| CN109067477A (en) * | 2018-06-27 | 2018-12-21 | 深圳市共进电子股份有限公司 | Wireless receiving sensitivity test method, system and computer equipment |
-
2007
- 2007-11-23 CN CNU2007200599723U patent/CN201138373Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI498568B (en) * | 2013-03-06 | 2015-09-01 | Lite On Electronics Guangzhou | Wireless testing system and testing method using the same |
| CN104459724A (en) * | 2013-09-16 | 2015-03-25 | 神讯电脑(昆山)有限公司 | Inside-box and outside-box automatic test method for a GPS box |
| CN104215978A (en) * | 2014-09-24 | 2014-12-17 | 重庆长安汽车股份有限公司 | Device and method for testing signal receiving performance of vehicle-mounted Beidou compatible GPS navigation antenna |
| CN104820226A (en) * | 2015-04-29 | 2015-08-05 | 重庆长安汽车股份有限公司 | Test method for navigation signal intensity of automobile navigation system |
| CN109067477A (en) * | 2018-06-27 | 2018-12-21 | 深圳市共进电子股份有限公司 | Wireless receiving sensitivity test method, system and computer equipment |
| CN109067477B (en) * | 2018-06-27 | 2021-05-28 | 深圳市共进电子股份有限公司 | Wireless receiving sensitivity test method, system and computer equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081022 Termination date: 20151123 |