CN111817795A - Beidou radio frequency baseband product testing device - Google Patents
Beidou radio frequency baseband product testing device Download PDFInfo
- Publication number
- CN111817795A CN111817795A CN202010562606.XA CN202010562606A CN111817795A CN 111817795 A CN111817795 A CN 111817795A CN 202010562606 A CN202010562606 A CN 202010562606A CN 111817795 A CN111817795 A CN 111817795A
- Authority
- CN
- China
- Prior art keywords
- signal
- radio frequency
- module
- product
- interface
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/0082—Monitoring; Testing using service channels; using auxiliary channels
- H04B17/0087—Monitoring; Testing using service channels; using auxiliary channels using auxiliary channels or channel simulators
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/309—Measuring or estimating channel quality parameters
- H04B17/345—Interference values
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/02—Details
- H04B3/46—Monitoring; Testing
Abstract
The invention discloses a Beidou radio frequency baseband product testing device which comprises a signal simulation module, an interference module, a processing module, a wireless testing module and a wired testing module, wherein the signal simulation module is used for simulating the interference of a Beidou radio frequency baseband product; the signal simulation module comprises a GNSS signal simulator, an RDSS signal simulator, a power divider and a satellite signal transponder; the interference module comprises an interference signal simulator; the processing module comprises an inbound receiver, an interface adaptation unit and a data processing terminal; the wireless test module comprises a microwave darkroom, and a tested product turntable, a receiving antenna and a transmitting antenna which are arranged in the microwave darkroom; the wired test module comprises a tested product program control power supply and a power control unit; all devices in each module are orderly connected and matched together. The Beidou radio frequency baseband product testing device provided by the embodiment of the invention has a simple structure, and can effectively improve the accuracy of product testing.
Description
Technical Field
The invention relates to the technical field of product testing, in particular to a Beidou radio frequency baseband product testing device.
Background
With the gradual maturity of big dipper satellite navigation system overall arrangement of china's autonomous design, big dipper radio frequency baseband product has also entered into the key period of industrialization application, because big dipper product has mostly fused satellite navigation, mobile communication, mobile internet, multiple technologies such as electronic map and survey and drawing, the product form includes the navigation chip, the module that the chip of different functions is constituteed, the integrated circuit board developed by the chip module, children's wrist-watch, the navigator, survey and drawing positioner or time service ware etc., consequently, in order to ensure the performance of big dipper radio frequency baseband product, at the in-process of research and development preparation big dipper radio frequency baseband product, need carry out the test of strict simulation, just can guarantee the quality of product.
The testing device for the Beidou product in the prior art is complex in structure, different influences of an uplink or a downlink on the product in the transmission process of signals are not comprehensively considered, the testing effect is single, and meanwhile, the influence of power factors on the signals is not involved, so that the phenomenon that interference signals cannot be detected or slightly strong signals are taken as the interference signals and are suppressed can occur in the actual detection process, the testing accuracy is reduced, the testing flow is prolonged, and the quality and the reliability of the product are further influenced.
Disclosure of Invention
The embodiment of the invention provides a Beidou radio frequency baseband product testing device, which aims to solve the technical problem of low testing accuracy of the existing product testing device.
In order to solve the technical problem, the embodiment of the invention provides a Beidou radio frequency baseband product testing device, which comprises a signal simulation module, an interference module, a processing module, a wireless testing module and a wired testing module;
the signal simulation module comprises a GNSS signal simulator, an RDSS signal simulator, a power divider and a satellite signal transponder; the interference module comprises an interference signal simulator; the processing module comprises an inbound receiver, an interface adaptation unit and a data processing terminal; the wireless test module comprises a microwave darkroom, and a tested product turntable, a receiving antenna and a transmitting antenna which are arranged in the microwave darkroom; the wired test module comprises a tested product program control power supply and a power control unit;
the radio frequency signal output ends of the GNSS signal simulator and the RDSS signal simulator are respectively connected with the input end of the power divider, and the output end of the power divider is connected with the input end of the satellite signal transponder; the signal input end of the inbound receiver is respectively connected with the output end of the satellite signal transponder and the output end of the interference signal simulator, and the signal input end of the interface adaptation unit is connected with the signal output end of the inbound receiver;
the transmitting antenna is in communication connection with a first interface of the interface adapting unit, and the receiving antenna is in communication connection with a second interface of the interface adapting unit; the tested product program control power supply is connected with the output end of the power control unit, and the input end of the power control unit is connected with the third interface of the interface adapting unit.
Preferably, the power control unit includes a power attenuator, the programmable power supply of the product to be tested is connected to an output terminal of the power attenuator, and an input terminal of the power attenuator is connected to the third interface of the interface adapting unit.
As a preferable scheme, the signal simulation module further includes a frequency spectrograph, and the GNSS signal simulator and the radio frequency signal output end of the RDSS signal simulator are connected to a receiving end of the frequency spectrograph.
Preferably, the wireless test module further includes a signal regeneration device, the receiving antenna is connected to an input end of the signal regeneration device through a shielded coaxial cable, and the transmitting antenna is connected to an output end of the signal regeneration device through a shielded coaxial cable.
Preferably, the program-controlled power supply of the tested product comprises a single-ended flyback pulse width modulation converter.
As a preferred scheme, the processing module further includes a switch, and the interface adapting unit is connected to the data processing terminal through the switch.
Preferably, the receiving antenna is further connected to the fourth interface of the interface adapting unit through a shielded coaxial cable.
As a preferred scheme, a tested product mounting bracket and an antenna bracket are arranged on the tested product rotary table.
Preferably, the interference signal simulator is an E4438C type signal generator.
Compared with the prior art, the embodiment of the invention has the beneficial effects that the corresponding signal simulation modules are arranged in the testing device aiming at different antenna signals, the influence of the interference of actual signals on products is comprehensively considered, the wireless testing module and the wired testing module which represent an uplink and a downlink are respectively arranged, and finally the comprehensive performance of the products is obtained by processing the testing data received by the modules.
Drawings
FIG. 1 is a schematic structural diagram of a positioning tool for a clutch driven plate in an embodiment of the invention;
the device comprises a signal simulation module, a signal acquisition module and a signal processing module, wherein 1, the signal simulation module is used for simulating a signal; 2. an interference module; 3. a processing module; 4. a wireless test module; 5. a wired test module; 11. a GNSS signal simulator; 12. an RDSS signal simulator; 13. a power divider; 14. a satellite signal repeater; 21. an interference signal simulator; 31. an inbound receiver; 32. an interface adaptation unit; 33. a data processing terminal (not shown); 41. a microwave darkroom; 42. a tested product rotary table; 43. a receiving antenna; 44. a transmitting antenna; 51. the tested product is provided with a program-controlled power supply; 52. a power control unit.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present application, the terms "first", "second", "third", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, features defined as "first," "second," "third," etc. may explicitly or implicitly include one or more of the features. In the description of the present application, "a plurality" means two or more unless otherwise specified.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
In the description of the present application, it is to be noted that, unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention, as those skilled in the art will recognize the specific meaning of the terms used in the present application in a particular context.
An embodiment of the present invention provides a testing device for a beidou radio frequency baseband product, and specifically, please refer to fig. 1, where fig. 1 is a schematic structural diagram of the testing device for the beidou radio frequency baseband product provided in the embodiment of the present invention, and the testing device includes a signal simulation module 1, an interference module 2, a processing module 3, a wireless testing module 4, and a wired testing module 5.
The signal simulation module 1 comprises a GNSS signal simulator 11, an RDSS signal simulator 12, a power divider 13 and a satellite signal repeater 14; the interference module 2 comprises an interference signal simulator 21; the processing module 3 comprises an inbound receiver 31, an interface adaptation unit 32 and a data processing terminal 33 (not shown); the wireless test module 4 comprises a microwave darkroom 41, and a tested product turntable 42, a receiving antenna 43 and a transmitting antenna 44 which are arranged in the microwave darkroom; the wired test module 5 includes a programmable power supply 51 and a power control unit 52 for a product under test.
It should be noted that, in this embodiment, radio frequency signal output ends of the GNSS signal simulator and the RDSS signal simulator are respectively connected to an input end of the power divider, and an output end of the power divider is connected to an input end of the satellite signal repeater; the signal input end of the inbound receiver is respectively connected with the output end of the satellite signal transponder and the output end of the interference signal simulator, and the signal input end of the interface adaptation unit is connected with the signal output end of the inbound receiver; the transmitting antenna is in communication connection with a first interface of the interface adapting unit, and the receiving antenna is in communication connection with a second interface of the interface adapting unit; the tested product program control power supply is connected with the output end of the power control unit, and the input end of the power control unit is connected with the third interface of the interface adapting unit.
In the process of testing the Beidou series products, the simulation of signals is an important link, the GNSS static simulation of actual satellite signals and the GNSS dynamic scene playback simulation of the actual satellite signals can be realized through the GNSS signal simulator, and therefore the Beidou radio frequency baseband products can be conveniently tested on various GNSS performance indexes under the real GNSS signals. Certainly, RDSS signals can be simulated through the RDSS simulator, and related closed-loop tests of short messages are conducted on Beidou radio frequency baseband products, and are determined by actual test requirements.
In this embodiment, the object to be tested is a beidou radio frequency baseband product, which includes beidou PNT chips, boards, terminals, antennas and other products, the test on the product is mainly distributed in the wireless test module and the wired test module, it needs to be explained that the ground size of the microwave dark room in the wireless test module is preferably 10m × 10m × 10m, and the distance between the antenna and the turntable of the product to be tested also needs to comprehensively consider the space of the microwave dark room and the wave-absorbing material of the antenna; the GNSS signal simulator is preferably a satellite navigation signal simulator CETC-NS8400 developed by the fifty-fourth research institute of China electronics and technology group company, has a satellite channel parameter configuration function, can independently set pseudo-range, carrier phase, Doppler and power of each channel, has a multi-path signal simulation function, can generate multi-path signals according to an environment model, or generate multi-path signals according to specified delay and power, is correspondingly matched with a subsequent power control unit, better simulates power factors, and provides accurate data support for the influence of the subsequent power factors on the signals; the power divider is a device which divides one path of input signal energy into two paths or multiple paths of output equal or unequal energy, and can also synthesize the multiple paths of signal energy into one path of output in reverse; the inbound receiver is used for processing and receiving signals of an uplink and a downlink, and analyzing the received inbound signals to complete measurement of related observed quantity data; the data processing terminal has data analysis and control functions related to data simulation calculation, navigation signal evaluation, turntable control and serial port control, and can be matched with one or more computers; the interference signal simulator has an external frequency signal input function and also has an interference signal generation function; the interface adaptation unit has the main functions of combining and distributing GNSS and RDSS simulation signals and interference signals so as to achieve a better test effect; the tested product rotary table has the function of realizing direction and pitching electric control rotation under the control of the upper computer, the tested Beidou product can be arranged on the table top of the rotary table through the support, the phase center is kept unchanged in the direction and pitching motion process, and the rotary table can also have the corresponding functions of electric lifting and electric polarization.
Preferably, in the above embodiment, the power control unit includes a power attenuator, the program-controlled power supply of the product to be tested is connected to the output end of the power attenuator, and the input end of the power attenuator is connected to the third interface of the interface adaptation unit, because an attenuation phenomenon inevitably occurs in an antenna signal in an actual communication process of the beidou product, in this embodiment, the power attenuator is introduced into the wired test module to cause attenuation in a specified frequency range, and the performance of the beidou radio frequency baseband product under the condition is tested, so that the overall test effect of the test device is improved.
Preferably, in the above embodiment, the signal simulation module further includes a frequency spectrograph, the GNSS signal simulator and the radio frequency signal output end of the RDSS signal simulator are connected to a receiving end of the frequency spectrograph, and the frequency spectrograph can better detect actual parameters of various types of signals, so that regulation and control of test signals are facilitated, and accuracy of the signals is ensured.
Preferably, in the above embodiment, the wireless test module further includes a signal regeneration device, the receiving antenna is connected to an input end of the signal regeneration device through a shielded coaxial cable, and the transmitting antenna is connected to an output end of the signal regeneration device through a shielded coaxial cable. The process of removing noise interference and recovering the damaged part of the signal is realized by processing the damaged or distorted signal, so that the test device can reduce the test error caused by signal damage and improve the test accuracy.
Preferably, in the above embodiment, the program-controlled power supply of the product to be tested includes a single-ended flyback pulse width modulation converter, and since the test apparatus in this embodiment needs to comprehensively consider the influence of the power factor, the single-ended flyback pulse width modulation converter is arranged in the program-controlled power supply of the product to be tested, so that the power limitation is removed, thereby facilitating the regulation and control of the test index and achieving a better test effect.
Preferably, in the above embodiment, the processing module further includes a switch, and the interface adapting unit is connected to the data processing terminal through the switch.
Preferably, in the above embodiment, the receiving antenna is further connected to the fourth interface of the interface adapting unit through a shielded coaxial cable, so as to ensure that the testing device can monitor the working performance of the receiving antenna in real time during an actual testing process, thereby facilitating fault maintenance of the receiving antenna.
Preferably, in the above embodiment, the tested product turntable is provided with a tested product mounting bracket and an antenna bracket. The tested product mounting bracket is used for conveniently mounting a Beidou radio frequency baseband product and ensuring the stability of the tested product in the test process, and the main function of the antenna bracket is used for realizing the antenna switching function of the tested product and simultaneously replacing a test antenna conveniently.
Preferably, in the above embodiment, the interference signal simulator has an external frequency signal input function, and an interference signal generating function, which is an E4438C type signal generator.
The Beidou radio frequency baseband product testing device provided by the embodiment of the invention has the beneficial effects that the corresponding signal simulation modules are arranged in the testing device aiming at different antenna signals, the influence of the interference of actual signals on products is comprehensively considered, the wireless testing module and the wired testing module which represent an uplink and a downlink are respectively arranged, and finally the comprehensive performance of the products is obtained by processing the testing data received by the modules.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.
Claims (9)
1. A Beidou radio frequency baseband product testing device is characterized by comprising a signal simulation module, an interference module, a processing module, a wireless testing module and a wired testing module;
the signal simulation module comprises a GNSS signal simulator, an RDSS signal simulator, a power divider and a satellite signal transponder; the interference module comprises an interference signal simulator; the processing module comprises an inbound receiver, an interface adaptation unit and a data processing terminal; the wireless test module comprises a microwave darkroom, and a tested product turntable, a receiving antenna and a transmitting antenna which are arranged in the microwave darkroom; the wired test module comprises a tested product program control power supply and a power control unit;
the radio frequency signal output ends of the GNSS signal simulator and the RDSS signal simulator are respectively connected with the input end of the power divider, and the output end of the power divider is connected with the input end of the satellite signal transponder; the signal input end of the inbound receiver is respectively connected with the output end of the satellite signal transponder and the output end of the interference signal simulator, and the signal input end of the interface adaptation unit is connected with the signal output end of the inbound receiver;
the transmitting antenna is in communication connection with a first interface of the interface adapting unit, and the receiving antenna is in communication connection with a second interface of the interface adapting unit; the tested product program control power supply is connected with the output end of the power control unit, and the input end of the power control unit is connected with the third interface of the interface adapting unit.
2. The Beidou radio frequency baseband product testing device according to claim 1, wherein the power control unit comprises a power attenuator, the programmable power supply of the product to be tested is connected with an output end of the power attenuator, and an input end of the power attenuator is connected with the third interface of the interface adapting unit.
3. The Beidou radio frequency baseband product testing device according to claim 1, wherein the signal simulation module further comprises a frequency spectrograph, and the radio frequency signal output ends of the GNSS signal simulator and the RDSS signal simulator are connected with the receiving end of the frequency spectrograph.
4. The Beidou radio frequency baseband product testing device according to claim 1, wherein the wireless testing module further comprises a signal regenerating device, the receiving antenna is connected with an input end of the signal regenerating device through a shielded coaxial cable, and the transmitting antenna is connected with an output end of the signal regenerating device through a shielded coaxial cable.
5. The Beidou radio frequency baseband product testing device according to claim 1, wherein the tested product program control power supply comprises a single-ended flyback pulse width modulation converter.
6. The Beidou radio frequency baseband product testing device according to claim 1, wherein the processing module further comprises a switch, and the interface adapting unit is connected with the data processing terminal through the switch.
7. The Beidou radio frequency baseband product testing device according to claim 1, wherein the receiving antenna is further connected with a fourth interface of the interface adapting unit through a shielded coaxial cable.
8. The Beidou radio frequency baseband product testing device according to claim 1, wherein a tested product mounting bracket and an antenna bracket are arranged on the tested product rotary table.
9. The Beidou radio frequency baseband product testing device according to claim 1, wherein the interference signal simulator is an E4438C type signal generator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010562606.XA CN111817795A (en) | 2020-06-18 | 2020-06-18 | Beidou radio frequency baseband product testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010562606.XA CN111817795A (en) | 2020-06-18 | 2020-06-18 | Beidou radio frequency baseband product testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111817795A true CN111817795A (en) | 2020-10-23 |
Family
ID=72846183
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010562606.XA Pending CN111817795A (en) | 2020-06-18 | 2020-06-18 | Beidou radio frequency baseband product testing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111817795A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112600610A (en) * | 2020-12-09 | 2021-04-02 | 内蒙古电力(集团)有限责任公司内蒙古电力科学研究院分公司 | Beidou communication module testing method, device, equipment and storage medium |
| CN112653527A (en) * | 2020-11-27 | 2021-04-13 | 中国航天标准化研究所 | Automatic testing equipment and method for remote sensing satellite data transmission product |
| CN113095730A (en) * | 2021-05-08 | 2021-07-09 | 广东工业大学 | Instrument priority scheduling evaluation method of Beidou test cloud platform |
| CN113179139A (en) * | 2021-03-18 | 2021-07-27 | 深圳市酷客智能科技有限公司 | Wireless product testing device and wireless product testing method |
| CN113281791A (en) * | 2021-06-01 | 2021-08-20 | 中国电子科技集团公司第五十四研究所 | Array navigation signal simulator based on channel simulation |
| CN115051767A (en) * | 2022-05-31 | 2022-09-13 | 安徽省通信产业服务有限公司 | 5G communication signal testing method |
-
2020
- 2020-06-18 CN CN202010562606.XA patent/CN111817795A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112653527A (en) * | 2020-11-27 | 2021-04-13 | 中国航天标准化研究所 | Automatic testing equipment and method for remote sensing satellite data transmission product |
| CN112653527B (en) * | 2020-11-27 | 2023-09-12 | 中国航天标准化研究所 | Automatic testing equipment and method for remote sensing satellite data transmission product |
| CN112600610A (en) * | 2020-12-09 | 2021-04-02 | 内蒙古电力(集团)有限责任公司内蒙古电力科学研究院分公司 | Beidou communication module testing method, device, equipment and storage medium |
| CN113179139A (en) * | 2021-03-18 | 2021-07-27 | 深圳市酷客智能科技有限公司 | Wireless product testing device and wireless product testing method |
| CN113179139B (en) * | 2021-03-18 | 2023-03-31 | 深圳市酷客智能科技有限公司 | Wireless product testing device and wireless product testing method |
| CN113095730A (en) * | 2021-05-08 | 2021-07-09 | 广东工业大学 | Instrument priority scheduling evaluation method of Beidou test cloud platform |
| CN113281791A (en) * | 2021-06-01 | 2021-08-20 | 中国电子科技集团公司第五十四研究所 | Array navigation signal simulator based on channel simulation |
| CN115051767A (en) * | 2022-05-31 | 2022-09-13 | 安徽省通信产业服务有限公司 | 5G communication signal testing method |
| CN115051767B (en) * | 2022-05-31 | 2023-11-17 | 安徽省通信产业服务有限公司 | 5G communication signal testing method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111817795A (en) | Beidou radio frequency baseband product testing device | |
| CN111426940B (en) | Test system of radar chip | |
| CN102148649B (en) | Method and system for testing space radio frequency performance of multi-antenna device | |
| CN104569635A (en) | Wireless terminal antenna performance testing system | |
| CN107547144B (en) | Radio frequency test system | |
| CN111432425B (en) | Test system and test method for network mode optimization of 3G/4G router | |
| CA2944203A1 (en) | Testing method and apparatus | |
| CN105141378B (en) | A kind of special transformer terminals wireless public network communication test system and method | |
| CN106597485A (en) | Beidou satellite navigation equipment interference resistance performance test system | |
| CN106338653B (en) | Partial discharge typical interference simulation device | |
| CN105141379B (en) | A kind of special transformer terminals GPRS communication test systems and method | |
| CN105245296B (en) | A kind of concentrator GPRS communication test systems and method | |
| CN103728502A (en) | Antenna test method and system and wireless terminal | |
| CN100468068C (en) | Automatic detecting system and method for mobile phone radiation | |
| CN212324108U (en) | Beidou radio frequency baseband product testing device | |
| CN103067105B (en) | Doppler frequency shift test device, the method for Doppler frequency shift device and communication module | |
| CN105243834B (en) | A kind of acquisition terminal GPRS communication test systems and method | |
| CN204131532U (en) | A kind of micro power radio communication test macro | |
| CN105162534A (en) | System and method of concentrator for testing wireless public network communication | |
| CN107294630B (en) | Simulation test system of carrier wave-micropower dual-mode module | |
| CN113612546B (en) | Physical layer testing system and method for satellite mobile communication terminal | |
| CN102122994A (en) | Device and method for testing multichannel radiation characteristic of multi-input multi-output (MIMO) equipment | |
| CN115065426A (en) | Production measurement and control system and method for wireless router product | |
| CN202818314U (en) | RRU clock test window | |
| CN207318726U (en) | A kind of Beidou satellite navigation equipment interference free performance tests system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |