WO2021103219A1

WO2021103219A1 - Test apparatus, system and method for satellite receiver

Info

Publication number: WO2021103219A1
Application number: PCT/CN2019/126762
Authority: WO
Inventors: 张志林; 高峰; 许祥滨
Original assignee: 泰斗微电子科技有限公司
Priority date: 2019-11-27
Filing date: 2019-12-19
Publication date: 2021-06-03
Also published as: CN110958059B; CN110958059A

Abstract

The present application is applicable to the technical field of testing. Provided are a test apparatus, system and method for a satellite receiver. The test apparatus comprises a satellite signal receiving module, a signal switching module, a signal analog module and a signal attenuation module, wherein the satellite signal receiving module is used for receiving a real satellite signal; the signal analog module is used for generating an analog satellite signal according to a generation control instruction of an upper computer; the signal switching module is used for switching the real satellite signal and the analog satellite signal according to a switching control instruction of the upper computer; and the signal attenuation module is used for adjusting, according to an adjustment control instruction of the upper computer, the power of the signals input by the signal switching module. A real satellite signal is received by means of a built-in satellite signal receiving module, an analog satellite signal is generated by means of a signal simulation module, and the switching between the real satellite signal and the analog satellite signal is performed according to a control instruction of an upper computer, such that automatic switching between an analog signal test environment and a real signal test environment is realized, thereby improving the test efficiency.

Description

Satellite receiver testing device, system and method

Technical field

This application belongs to the field of testing technology, and in particular relates to a testing device, system and method for a satellite receiver.

Background technique

Satellite receiver manufacturers need to perform performance tests on satellite receivers when designing and evaluating receiver performance. During performance testing, satellite analog signal sources are usually used to test the sensitivity of the receiver, the performance of the satellite receiver in the real environment, and the accuracy of the differential positioning function. These tests usually need to set up separate test environments to test the satellite receiver, respectively set up the simulated signal environment and the real signal environment, and set up the test environment separately, which requires investment of manpower, and when the environment is re-built, the test will be interrupted, so complete automation cannot be achieved. Testing, testing efficiency is affected.

In summary, there is a problem of low test efficiency in the current performance test of satellite receivers.

Summary of the invention

In view of this, the embodiments of the present application provide a satellite receiver testing device, system, and method to solve the problem of low testing efficiency in the current performance testing of satellite receivers.

The first aspect of the present application provides a test device for a satellite receiver, including: the test device is used to communicate with an upper computer, and the test device includes a satellite signal receiving module, a signal switching module, a signal simulation module, and a signal Attenuation module;

The output terminal of the satellite signal receiving module is connected to the first input terminal of the signal switching module, the output terminal of the signal analog module is connected to the second input terminal of the signal switching module, and the output of the signal switching module The terminal is connected to the input terminal of the signal attenuation module, the output terminal of the signal attenuation module outputs a radio frequency signal, and the host computer is used to communicate with the satellite signal receiving module, the signal switching module, and the signal analog module, respectively. Connect with signal attenuation module;

The satellite signal receiving module is used to receive real satellite signals;

The signal simulation module is used to generate an analog satellite signal according to the generation control instruction of the host computer;

The signal switching module is used to switch the real satellite signal and the analog satellite signal according to the switching control instruction of the host computer;

The signal attenuation module is used to adjust the power of the signal input by the signal switching module according to the adjustment control instruction of the host computer, and output a radio frequency signal that meets the power requirement.

In an implementation of this embodiment, the satellite signal receiving module includes a satellite signal receiving antenna and a satellite receiver.

Further, the satellite signal receiving module is also used to output ephemeris and positioning information to the host computer according to the received real satellite signal.

Further, the satellite signal receiving module is also used to perform satellite positioning according to the differential data provided by the upper computer.

The second aspect of the present application provides a satellite receiver test system, including the satellite receiver test device described in the first aspect and an upper computer, and the test device is communicatively connected with the upper computer.

In an implementation of this embodiment, the host computer includes a control module and a display module;

The control module is used to generate a control instruction according to a user instruction, and transmit the control instruction to the test device, so as to control the test device to enter a corresponding test state;

The display module is used to display the ephemeris and positioning information output by the test device to the host computer.

Further, the host computer is in communication connection with the server;

The host computer obtains differential data from the server, and transmits the differential data to the testing device.

Further, the host computer is also used to perform leap second analysis based on the real satellite signal output by the test device, and to update the leap second correction number in real time.

The third aspect of the present application provides a satellite receiver test method, which is applied to a satellite receiver test system, including:

Output a simulated environment instruction to the test device, the simulated environment instruction is used to control the test device to output a simulated satellite signal and enter an analog signal test state;

Outputting a real environment instruction to the testing device, the real environment instruction being used to control the testing device to receive real satellite signals and enter a real signal test state;

Obtain differential data, and output the differential data to a testing device, where the differential data is used to control the testing device to enter a differential positioning function test state.

Further, the above-mentioned test method also includes:

Receiving ephemeris and positioning information; the ephemeris and positioning information are output by the satellite signal receiving module of the test device;

Update the leap second correction number according to the ephemeris and positioning information.

The fourth aspect of the present application provides a terminal device, including a memory, a processor, and a computer program stored in the memory and capable of running on the processor. The processor executes the computer program as follows The steps of the satellite receiver test method described in the foregoing third aspect.

The fifth aspect of the present application provides a computer-readable storage medium, the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, it realizes the operation of the satellite receiver as described in the foregoing third aspect. Steps of the test method.

The sixth aspect of the present application provides a computer program product, which when the computer program product runs on a terminal device, causes the terminal device to execute the steps of the satellite receiver test method described in any one of the above-mentioned first aspects.

The satellite receiver test device, system and method provided in the present application receive real satellite signals through a built-in satellite signal receiving module, generate analog satellite signals through a signal simulation module, and perform real satellite signal integration according to the control instructions of the upper computer. Simulate the switching of satellite signals, thereby realizing automatic switching between the simulated signal test environment and the real signal test environment, without the need to rebuild the test environment, and can fully automate the test of the satellite receiver and improve the test efficiency.

Description of the drawings

In order to more clearly describe the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only of the present application. For some embodiments, those of ordinary skill in the art can obtain other drawings based on these drawings without creative work.

FIG. 1 is a schematic structural diagram of a test device for a satellite receiver provided by an embodiment of the present application;

2 is a schematic structural diagram of a test device for a satellite receiver provided by another embodiment of the present application;

FIG. 3 is a schematic structural diagram of a satellite receiver test system provided by an embodiment of the present application;

4 is a schematic structural diagram of a satellite receiver test system provided by another embodiment of the present application;

5 is a schematic diagram of the implementation process of a satellite receiver testing method provided by an embodiment of the present application;

Fig. 6 is a schematic diagram of a terminal device provided by an embodiment of the present application.

Detailed ways

In the following description, for the purpose of illustration rather than limitation, specific details such as a specific system structure and technology are proposed for a thorough understanding of the embodiments of the present application. However, it should be clear to those skilled in the art that the present application can also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to avoid unnecessary details from obstructing the description of this application.

It should be understood that when used in the specification and appended claims of this application, the term "comprising" indicates the existence of the described features, wholes, steps, operations, elements and/or components, but does not exclude one or more other The existence or addition of features, wholes, steps, operations, elements, components, and/or collections thereof.

It should also be understood that the term "and/or" used in the specification and appended claims of this application refers to any combination of one or more of the items listed in the associated and all possible combinations, and includes these combinations.

As used in the description of this application and the appended claims, the term "if" can be construed as "when" or "once" or "in response to determination" or "in response to detecting ". Similarly, the phrase "if determined" or "if detected [described condition or event]" can be construed as meaning "once determined" or "in response to determination" or "once detected [described condition or event]" depending on the context ]" or "in response to detection of [condition or event described]".

In addition, in the description of the specification of this application and the appended claims, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

The reference to "one embodiment" or "some embodiments" described in the specification of this application means that one or more embodiments of this application include a specific feature, structure, or characteristic described in combination with the embodiment. Therefore, the sentences "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. appearing in different places in this specification are not necessarily All refer to the same embodiment, but mean "one or more but not all embodiments" unless it is specifically emphasized otherwise. The terms "including", "including", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized.

In order to illustrate the technical solutions described in the present application, specific embodiments are used for description below.

As shown in FIG. 1, this embodiment provides a test device 100 for a satellite receiver. The test device 100 is used to communicate with an upper computer, and specifically includes a satellite signal receiving module 110, a signal switching module 120, and a signal simulation module. 130 and the signal attenuation module 140.

Specifically, the output terminal of the satellite signal receiving module 110 is connected to the first input terminal of the signal switching module 120, the output terminal of the signal analog module 130 is connected to the second input terminal of the signal switching module 120, and the output terminal of the signal switching module 120 is connected to The input terminal of the signal attenuation module 140 is connected, and the output terminal of the signal attenuation module 140 outputs radio frequency signals. The upper computer is used to connect with the satellite signal receiving module 110, the signal switching module 120, the signal simulation module 130, and the signal attenuation module 140, respectively.

The satellite signal receiving module 110 is used to receive real satellite signals.

The signal simulation module 130 is used to generate an analog satellite signal according to the generation control instruction of the host computer.

The signal switching module 120 is used for switching the real satellite signal and the analog satellite signal according to the switching control instruction of the host computer.

The signal attenuation module 140 is configured to adjust the power of the signal input by the signal switching module according to the adjustment control instruction of the host computer, and output a radio frequency signal that meets the power requirement.

Specifically, the above-mentioned satellite receiver testing device 100 can select the input source of the output radio frequency signal according to the test environment that needs to be built during the test, and then build different test environments.

Exemplarily, when it is necessary to build an analog signal test environment, the host computer outputs a generation control instruction to the signal simulation module 130, and the signal simulation module 130 generates an analog satellite signal according to the generation control instruction of the host computer, and passes the signal switching module 120 Switch the signal source to the signal simulation module 130 according to the switching control instruction of the host computer to receive the analog satellite signal output by the signal simulation module 130, and output the received analog satellite signal to the signal attenuation module 140 for power adjustment, the signal attenuation module 140 will adjust the power of the analog satellite signal according to the received adjustment control command to adjust the power of the radio frequency signal output by the analog satellite signal, and output the radio frequency signal to the satellite receiver to be tested through the signal attenuation module 140. To test the sensitivity of the satellite receiver to be tested.

Exemplarily, when it is necessary to build a real signal test environment, the same upper computer outputs a signal receiving instruction to the satellite signal receiving module 110, the real satellite signal is received through the satellite signal receiving module 1110, and the signal switching module 120 is used according to the upper computer’s The switching control instruction switches the signal source to the satellite signal receiving module 110 to receive the real satellite signal received by the satellite signal receiving module 110, and output the received real satellite signal to the signal attenuation module 140. The signal attenuation module can also be used according to The received adjustment control command adjusts the power of the real satellite signal to adjust the transmission power of the real satellite signal output radio frequency signal, and the signal attenuation module 140 outputs the radio frequency signal to the satellite receiver to be tested. Test the performance of the satellite receiver to be tested in the real environment.

Specifically, the above-mentioned satellite signal receiving module 110 is also used to perform satellite positioning according to the differential data provided by the upper computer. It should be noted that the above-mentioned satellite signal receiving module 110 may be a satellite receiver with a high-precision positioning function, which can perform satellite positioning according to the differential data when receiving differential data with high positioning accuracy. When it is necessary to build a test environment for testing the differential positioning function, the host computer will also output the signal receiving instruction to the satellite signal receiving module 110 to receive the real satellite signal, and then the host computer will give the differential signal obtained from the server to the signal receiver. In the module 110, the signal receiving module performs precise positioning based on the differential data, and then compares the positioning result with the positioning result of the satellite receiver to be tested, so as to test the accuracy of the satellite receiver's differential positioning function. It should be noted that the above-mentioned test device can also output the received differential data, so that the satellite receiver that needs to be tested can also perform differential positioning based on the differential data, and then can perform the differential positioning function of the satellite receiving that needs to be tested. Test and evaluate the accuracy of positioning.

It should be noted that the above-mentioned host computer can be a single chip microcomputer, a mobile phone, a tablet computer, a wearable device, a vehicle-mounted device, an augmented reality (AR)/virtual reality (VR) device, a notebook computer, a super mobile personal computer (ultra-mobile personal computer, UMPC), netbook, personal digital assistant (personal digital assistant, PDA) and other terminal equipment. The host computer can determine the test environment that the user needs to build according to the user's input instructions, and then generate corresponding control instructions to control the test device to be in a corresponding test state.

It should also be noted that the above-mentioned signal attenuation module can be implemented by using an existing signal attenuator. The output power of the output signal can be adjusted by the upper computer output adjustment control command, which can adjust the power of the analog satellite signal, and can also adjust the power of the real satellite. The signal is power adjusted.

Specifically, the aforementioned satellite signal receiving module 110 is further configured to output ephemeris and positioning information to the host computer according to the received real satellite signal.

In one embodiment, as shown in FIG. 2, the above-mentioned satellite signal receiving module 110 includes a satellite signal receiving antenna 111 and a satellite receiver 112.

Specifically, the aforementioned satellite signal receiving antenna 111 is used to collect signals transmitted from satellites, and the aforementioned satellite signal receiving antenna 111 can be used to receive navigation satellite signals, such as GPS satellite signals, Beidou satellite signals, etc., and can also be used to receive satellite TV. The signal can also be used to receive other satellite signals, and there is no restriction here.

Specifically, the above-mentioned satellite receiver 112 may be various existing satellite receivers capable of processing satellite signal receiving antennas, and may also have a high-precision differential positioning function. The satellite signal receiving antenna 111 introduces real satellite signals into the device and supplies it to the built-in satellite receiver 112 and a signal source as the signal switching module 120. The built-in satellite receiver 112 can also output ephemeris and positioning information to the host computer. . The above-mentioned positioning information may be NMEA positioning information. It should be noted that ephemeris refers to the precise position or trajectory table of celestial bodies that changes with time in GPS measurement. It is a function of time. NMEA positioning information refers to the unified RTCM standard protocol for GPS navigation equipment. In the embodiment, the positioning information output by the satellite receiver 112 refers to the output standard NMEA format sentence. It should be noted that the aforementioned satellite receiver 112 can also store the obtained ephemeris and positioning information.

It should be noted that the above-mentioned satellite receiver 112 includes the following working states: 1) Ordinary positioning state, which outputs standard NMEA format sentences; 2) Ephemeris output state, which is configured to output ephemeris information according to the host computer control command configuration; 3) Difference In the positioning state, enter into differential positioning by receiving differential data to achieve high-precision positioning.

The satellite receiver test device provided by the embodiment of the application receives real satellite signals through a built-in satellite signal receiving module, generates analog satellite signals through a signal simulation module, and performs real satellite signals and simulated satellite signals according to the control instructions of the upper computer. Switch, and then realize the automatic switch of the analog signal test environment and the real signal test environment, without re-building the test environment, can fully automate the test of the satellite receiver, and improve the test efficiency. In addition, the test device can also output and save the real satellite signal ephemeris, which is convenient for analyzing the satellite trajectory, and the shared analog satellite signal and real satellite signal can achieve signal attenuation through the same signal attenuator, without the need for additional attenuation equipment The program-controlled attenuation of the real signal can be realized, which effectively reduces the cost. The high-precision positioning of the satellite in the actual environment output by the test device can be used to provide the receiver under test for comparison; it can also provide the differential data output for the satellite receiver differential positioning function of the test, and then realize the satellite receiver that needs to be tested. The differential positioning function test effectively solves the problem of low test efficiency in the current performance test of satellite receivers.

As shown in FIG. 3, this embodiment provides a satellite receiver test system 10, which includes a satellite receiver test device 100 and a host computer 200.

Specifically, the test device for the above-mentioned satellite receiver is as described in the previous embodiment. The above-mentioned host computer 200 may be a PC with control and display functions. It should be noted that the above-mentioned host computer 200 may also be a single chip microcomputer, a mobile phone, a tablet computer, a wearable device, a vehicle-mounted device, an augmented reality (AR)/virtual reality (VR) device, a notebook computer, a super mobile Personal computers (ultra-mobile personal computers, UMPC), netbooks, personal digital assistants (personal digital assistants, PDAs) and other terminal devices are not restricted here. The above-mentioned host computer 200 can output control instructions to the test device, so that the test device enters the corresponding test state (such as simulation test state, real signal test state, differential positioning function test state, etc.), and can display the star output of the test device. Calendar and location information.

In one embodiment, as shown in FIG. 4, the above-mentioned host computer 200 includes a control module 210 and a display module 220.

The above-mentioned control module 210 is configured to generate control instructions according to user instructions, and transmit the control instructions to the test device, so as to control the test device to enter the corresponding test state.

The above-mentioned display module 220 is used to display the ephemeris and positioning information output by the test device to the host computer.

Specifically, the above-mentioned host computer 200 further includes an input module that receives user input instructions, and the user can input instructions of the test environment to be set up through the above-mentioned input module. Then, the control module 210 generates corresponding control instructions to the testing device 100 according to the instructions input by the user, so as to control the testing device 100 to enter the corresponding testing state.

Specifically, when the user instruction received by the host computer 200 is to set up an analog signal test environment, the control module 210 outputs and generates a control instruction according to the user instruction to the signal simulation module 130 of the test device 100 to control the signal simulation module 130 Generate analog satellite signals; output switching control instructions to the signal switching module 120 of the test device 100 to control the signal switching module 120 to switch the signal source to the analog satellite signal output by the signal simulation module 130, so that the test device enters the analog signal test state .

Specifically, when the user instruction received by the host computer 200 is to set up a real signal test environment, the control module 210 will output the receiving control instruction to the satellite signal receiving module 110 according to the user instruction, and receive the real satellite through the satellite signal receiving module 110 Signal and output a switching control command to the signal switching module 120 of the test device 100 to control the signal switching module 120 to switch the signal source to the real satellite signal received by the satellite signal receiving module, so that the test device enters the real signal test state.

It should be noted that after the satellite signal receiving module receives the real satellite signal, it can output the ephemeris and positioning information to the host computer according to the instructions of the host computer 200, and display the ephemeris and positioning information to the host computer through the display module 220 of the host computer.

It should be noted that the above-mentioned upper computer can also send the received ephemeris and positioning information to other terminals and servers.

In an embodiment, the host computer 200 is in communication connection with the server 300. The aforementioned server 300 is a network server capable of providing differential data. The host computer 200 communicates with the server 300 and then obtains the differential data from the server.

Specifically, the above-mentioned host computer obtains differential data from the server, and transmits the differential data to the testing device.

Specifically, after the host computer transmits the differential data to the satellite receiver 112 of the test device, the satellite receiver 112 performs differential positioning according to the differential data, so that the test device enters the differential positioning function test state.

Specifically, when the user instruction received by the host computer 200 is to set up a differential positioning function test environment, the control module 210 sends the received differential data to the satellite receiver of the testing device 100 to control the satellite receiver to enter the differential positioning state , And then can perform differential positioning according to the differential data, so that the test device enters the differential positioning function test state.

In one embodiment, the above-mentioned host computer is also used to perform leap second analysis according to the real satellite signal output by the test device, and to update the leap second correction number in real time.

Specifically, GPS satellite navigation messages are arranged into a data stream in the form of frames and subframes. Each satellite sends navigation messages frame by frame. Page 18 of the fourth subframe provides current layer delay correction parameters and GPS time. Parameters related to UTC time. When the satellite receiver is powered on, the output time is GPS time. After receiving this subframe, the output time is adjusted to UTC time. If you need to update, add one to the previously saved leap second correction number. It should be noted that UTC is the English abbreviation of Universal Time Coordinated, which is a second-based time scale prescribed and recommended by the International Radio Consultative Committee and maintained by the Bureau of International Time (BIH).

Since the satellite receiver test system provided in this embodiment is based on the same concept as the satellite receiver test device shown in FIG. 1 of this application, the technical effect it brings is similar to the satellite receiver test shown in FIG. 1 of this application. The device embodiments are the same, and the specific content can be referred to the description of the first embodiment, which will not be repeated here.

Those skilled in the art can clearly understand that for the convenience and conciseness of description, only the division of the above functional units and modules is used as an example. In practical applications, the above functions can be allocated to different functional units and modules as needed. Module completion, that is, the internal structure of the device is divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiments can be integrated into one processing unit, or each unit can exist alone physically, or two or more units can be integrated into one unit. The above-mentioned integrated units can be hardware-based Formal realization can also be realized in the form of a software functional unit. In addition, the specific names of the functional units and modules are only for the convenience of distinguishing each other, and are not used to limit the protection scope of the present application. For the specific working process of the units and modules in the foregoing system, reference may be made to the corresponding process in the foregoing embodiment, which will not be repeated here.

Therefore, the satellite receiver test system provided in this embodiment can also receive real satellite signals through the built-in satellite signal receiving module, generate analog satellite signals through the signal simulation module, and perform real satellite signals and simulations according to the control instructions of the host computer. The switching of the satellite signal realizes the automatic switching between the analog signal test environment and the real signal test environment, without the need to re-build the test environment, and can fully automate the test of the satellite receiver and improve the test efficiency. In addition, the test device can also output and save the real satellite signal ephemeris, which is convenient for analyzing the satellite trajectory, and the shared analog satellite signal and real satellite signal can achieve signal attenuation through the same signal attenuator, without the need for additional attenuation equipment The program-controlled attenuation of the real signal can be realized, which effectively reduces the cost. The high-precision positioning of the satellite in the actual environment output by the test device can be used to provide the receiver under test for comparison; it can also provide the differential data output for the satellite receiver differential positioning function of the test, and then realize the satellite receiver that needs to be tested. The differential positioning function test effectively solves the problem of low test efficiency in the current performance test of satellite receivers. And it can provide a leap second correction source for the signal simulation module to avoid the influence of the uncertainty of the leap second on the analog satellite signal.

As shown in Figure 5, this embodiment provides a satellite receiver test method, which is applied to a satellite receiver test system, which specifically includes:

S101: Output a simulated environment instruction to the test device, the simulated environment instruction is used to control the test device to output a simulated satellite signal and enter an analog signal test state.

Specifically, when the user instruction received by the host computer is to build an analog signal test environment, the control module will input the simulated environment instruction to the testing device according to the user instruction. In turn, the test device enters the analog signal test state. Specifically, the control signal simulation module generates an analog satellite signal; the control signal switching module switches the signal source to the analog satellite signal output by the signal simulation module, so that the test device enters the analog signal test state.

S102: Output a real environment instruction to the testing device, where the real environment instruction is used to control the testing device to receive real satellite signals and enter a real signal test state.

Specifically, when the above-mentioned host computer and the received user instruction are to build a real signal test environment, the control module will output the real environment instruction to the test device according to the user instruction, so that the test device enters the real signal test state, specifically, through The satellite signal receiving module is controlled to receive the real satellite signal, and the signal switching module is controlled to switch the signal source to the real satellite signal received by the satellite signal receiving module, so that the test device enters the real signal test state.

S103: Obtain differential data, and output the differential data to a testing device, where the differential data is used to control the testing device to enter a differential positioning function test state.

Specifically, the upper computer obtains the differential data from the server, and then transmits the differential data to the test device, so that the test device enters the differential positioning function test state, specifically, the differential data is transmitted to the satellite receiver, and the satellite receiver is controlled according to the differential data. The data undergoes differential positioning, and the test device enters the differential positioning function test state.

In an embodiment, before S101, the test method of the above-mentioned satellite receiver further includes:

Receive ephemeris and positioning information; the ephemeris and positioning information are output by the satellite signal receiving module of the test device.

It should be noted that when the satellite signal receiving module receives the real satellite signal, it can output the ephemeris and positioning information to the upper computer according to the instructions of the upper computer, and display it through the display module of the upper computer.

Since the test method of the satellite receiver provided in this embodiment is based on the same concept as the test system of the satellite receiver shown in FIG. 3 of this application, its technical effect is similar to the test of the satellite receiver shown in FIG. 3 of this application. The system embodiment is the same, and the specific content can be referred to the description of the first embodiment, which will not be repeated here.

Therefore, the satellite receiver test method provided in this embodiment can also receive real satellite signals through the built-in satellite signal receiving module, generate simulated satellite signals through the signal simulation module, and perform real satellite signals and simulations according to the control instructions of the host computer. The switching of the satellite signal realizes the automatic switching between the analog signal test environment and the real signal test environment, without the need to re-build the test environment, and can fully automate the test of the satellite receiver and improve the test efficiency. In addition, the test device can also output and save the real satellite signal ephemeris, which is convenient for analyzing the satellite trajectory, and the shared analog satellite signal and real satellite signal can achieve signal attenuation through the same signal attenuator, without the need for additional attenuation equipment The program-controlled attenuation of the real signal can be realized, which effectively reduces the cost. The high-precision positioning of the satellite in the actual environment output by the test device can be used to provide the receiver under test for comparison; it can also provide the differential data output for the satellite receiver differential positioning function of the test, and then realize the satellite receiver that needs to be tested. The differential positioning function test effectively solves the problem of low test efficiency in the current performance test of satellite receivers. And it can provide a leap second correction source for the signal simulation module to avoid the influence of the uncertainty of the leap second on the analog satellite signal.

FIG. 6 is a schematic structural diagram of a terminal device provided by an embodiment of this application. As shown in FIG. 6, the terminal device 6 of this embodiment includes: at least one processor 60 (only one is shown in FIG. 6), a processor, a memory 61, and a processor that is stored in the memory 61 and can be processed in the at least one processor. A computer program 62 running on the processor 60, when the processor 60 executes the computer program 62, the steps in the embodiment of the method for outputting any of the second pulse signals described above are implemented.

The terminal device 6 may be a computing device such as a desktop computer, a notebook, a palmtop computer, and a cloud terminal device. The terminal device may include, but is not limited to, a processor 60 and a memory 61. Those skilled in the art can understand that FIG. 6 is only an example of the terminal device 6 and does not constitute a limitation on the terminal device 6. It may include more or fewer components than shown in the figure, or a combination of certain components, or different components. , For example, can also include input and output devices, network access devices, and so on.

The so-called processor 60 may be a central processing unit (Central Processing Unit, CPU), and the processor 60 may also be other general-purpose processors, digital signal processors (Digital Signal Processors, DSPs), and application specific integrated circuits (Application Specific Integrated Circuits). , ASIC), ready-made programmable gate array (Field-Programmable Gate Array, FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like.

The memory 61 may be an internal storage unit of the terminal device 6 in some embodiments, such as a hard disk or a memory of the terminal device 6. In other embodiments, the memory 61 may also be an external storage device of the terminal device 6, such as a plug-in hard disk equipped on the terminal device 6, a smart media card (SMC), and a secure digital (Secure Digital, SD) card, Flash Card, etc. Further, the memory 61 may also include both an internal storage unit of the terminal device 6 and an external storage device. The memory 61 is used to store an operating system, an application program, a boot loader (Boot Loader), data, and other programs, such as the program code of the computer program. The memory 61 can also be used to temporarily store data that has been output or will be output.

Exemplarily, the computer program 62 may be divided into one or more units, and the one or more units are stored in the memory 61 and executed by the processor 60 to complete the application. The one or more units may be a series of computer program instruction segments capable of completing specific functions, and the instruction segments are used to describe the execution process of the computer program 62 in the terminal device 6. For example, the computer program 62 can be divided into a signal acquisition module, a frequency calculation module, an accuracy setting module, and a calibration output module. The specific functions of each module are as follows:

The simulation test module is used to output a simulation environment command to the test device, and the simulation environment command is used to control the test device to output a simulated satellite signal and enter the simulation signal test state;

The real test module is used to output real environment instructions to the testing device, and the real environment instructions are used to control the testing device to receive real satellite signals and enter the real signal test state;

The differential positioning function module is used to obtain differential data and output the differential data to the test device, and the differential data is used to control the test device to enter the differential positioning function test state.

An embodiment of the present application also provides a network device, which includes: at least one processor, a memory, and a computer program stored in the memory and running on the at least one processor, and the processor executes The computer program implements the steps in any of the foregoing method embodiments.

The embodiments of the present application also provide a computer-readable storage medium, where the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps in each of the foregoing method embodiments can be realized.

The embodiments of the present application provide a computer program product. When the computer program product runs on a mobile terminal, the steps in the foregoing method embodiments can be realized when the mobile terminal is executed.

If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium. Based on this understanding, the implementation of all or part of the processes in the above-mentioned embodiments and methods in the present application can be accomplished by instructing relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium. The computer program can be stored in a computer-readable storage medium. When executed by the processor, the steps of the foregoing method embodiments can be implemented. Wherein, the computer program includes computer program code, and the computer program code may be in the form of source code, object code, executable file, or some intermediate forms. The computer-readable medium may at least include: any entity or device capable of carrying the computer program code to the photographing device/terminal device, recording medium, computer memory, read-only memory (ROM, Read-Only Memory), and random access memory (RAM, Random Access Memory), electric carrier signal, telecommunications signal and software distribution medium. Such as U disk, mobile hard disk, floppy disk or CD-ROM, etc. In some jurisdictions, in accordance with legislation and patent practices, computer-readable media cannot be electrical carrier signals and telecommunication signals.

In the above-mentioned embodiments, the description of each embodiment has its own focus. For parts that are not described in detail or recorded in an embodiment, reference may be made to related descriptions of other embodiments.

A person of ordinary skill in the art may realize that the units and algorithm steps of the examples described in combination with the embodiments disclosed herein can be implemented by electronic hardware or a combination of computer software and electronic hardware. Whether these functions are executed by hardware or software depends on the specific application and design constraint conditions of the technical solution. Professionals and technicians can use different methods for each specific application to implement the described functions, but such implementation should not be considered beyond the scope of this application.

In the embodiments provided in this application, it should be understood that the disclosed apparatus/network equipment and method may be implemented in other ways. For example, the device/network device embodiments described above are merely illustrative. For example, the division of the modules or units is only a logical function division, and there may be other divisions in actual implementation, such as multiple units. Or components can be combined or integrated into another system, or some features can be omitted or not implemented. In addition, the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.

The above-mentioned embodiments are only used to illustrate the technical solutions of the present application, not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, a person of ordinary skill in the art should understand that it can still implement the foregoing The technical solutions recorded in the examples are modified, or some of the technical features are equivalently replaced; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the application, and should be included in Within the scope of protection of this application.

Claims

A test device for a satellite receiver, characterized in that the test device is used to communicate with an upper computer, and the test device includes a satellite signal receiving module, a signal switching module, a signal simulation module, and a signal attenuation module;

The output terminal of the satellite signal receiving module is connected to the first input terminal of the signal switching module, the output terminal of the signal analog module is connected to the second input terminal of the signal switching module, and the output of the signal switching module The terminal is connected to the input terminal of the signal attenuation module, the output terminal of the signal attenuation module outputs a radio frequency signal, and the host computer is used to communicate with the satellite signal receiving module, the signal switching module, and the signal analog module, respectively. Connect with signal attenuation module;

The satellite signal receiving module is used to receive real satellite signals;

The signal simulation module is used to generate an analog satellite signal according to the generation control instruction of the host computer;

The signal switching module is used to switch the real satellite signal and the analog satellite signal according to the switching control instruction of the host computer;

The signal attenuation module is used to adjust the power of the signal input by the signal switching module according to the adjustment control instruction of the host computer, and output a radio frequency signal that meets the power requirement.
5. The satellite receiver testing device according to claim 1, wherein the satellite signal receiving module includes a satellite signal receiving antenna and a satellite receiver.
5. The satellite receiver test device according to claim 1, wherein the satellite signal receiving module is further configured to output ephemeris and positioning information to the host computer according to the received real satellite signal.
The satellite receiver test device according to claim 1, wherein the satellite signal receiving module is further used for satellite positioning according to the differential data provided by the upper computer.
A test system for a satellite receiver, characterized by comprising the test device according to any one of claims 1 to 4 and an upper computer, and the test device is communicatively connected with the upper computer.
The satellite receiver test system according to claim 5, wherein the upper computer includes a control module and a display module;

The control module is used to generate a control instruction according to a user instruction, and transmit the control instruction to the test device, so as to control the test device to enter a corresponding test state;

The display module is used to display the ephemeris and positioning information output by the test device to the host computer.
The satellite receiver test system according to claim 5, wherein the upper computer is in communication connection with the server;

The host computer obtains differential data from the server, and transmits the differential data to the testing device.
The satellite receiver test system according to claim 5, wherein the host computer is further used to perform leap second analysis according to the real satellite signal output by the test device, and update the leap second correction number in real time.
A test method of a satellite receiver, characterized in that the test method of the satellite receiver is applied to the test system of the satellite receiver according to any one of claims 5 to 8, and the test method comprises:

Output a simulated environment instruction to the test device, the simulated environment instruction is used to control the test device to output a simulated satellite signal and enter an analog signal test state;

Outputting a real environment instruction to the testing device, the real environment instruction being used to control the testing device to receive real satellite signals and enter a real signal test state;

Obtain differential data, and output the differential data to a testing device, where the differential data is used to control the testing device to enter a differential positioning function test state.
The satellite receiver test method according to claim 9, characterized in that it further comprises:

Receiving ephemeris and positioning information; the ephemeris and positioning information are output by the satellite signal receiving module of the test device;

Update the leap second correction number according to the ephemeris and positioning information.