CN110958059B - Testing device, system and method of satellite receiver - Google Patents
Testing device, system and method of satellite receiver Download PDFInfo
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- CN110958059B CN110958059B CN201911182272.7A CN201911182272A CN110958059B CN 110958059 B CN110958059 B CN 110958059B CN 201911182272 A CN201911182272 A CN 201911182272A CN 110958059 B CN110958059 B CN 110958059B
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04B17/00—Monitoring; Testing
- H04B17/20—Monitoring; Testing of receivers
- H04B17/29—Performance testing
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- 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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
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Abstract
The application is applicable to the technical field of testing, and provides a testing device, a system and a method of a satellite receiver, wherein the testing device, the system and the method comprise a satellite signal receiving module, a signal switching module, a signal simulation module and a signal attenuation module, wherein the satellite signal receiving module is used for receiving real satellite signals; the signal simulation module is used for generating a simulation satellite signal according to the generation control instruction of the upper computer; the signal switching module is used for switching the real satellite signal and the simulated satellite signal according to a switching control instruction of the upper computer; the signal attenuation module is used for adjusting the power of a signal input by the signal switching module according to an adjusting control instruction of the upper computer, receiving a real satellite signal through the built-in satellite signal receiving module, generating a simulated satellite signal through the signal simulation module, and switching the real satellite signal and the simulated satellite signal according to the control instruction of the upper computer, so that the automatic switching of a simulated signal testing environment and a real signal testing environment is realized, and the testing efficiency is improved.
Description
Technical Field
The present application belongs to the field of testing technologies, and in particular, to a testing apparatus, system, and method for a satellite receiver.
Background
Satellite receiver manufacturers are required to perform performance tests on satellite receivers when designing and evaluating receiver performance. When the performance test is performed, a satellite analog signal source is generally adopted to test the sensitivity of the receiver, the performance of the satellite receiver in a real environment and the accuracy of a differential positioning function. These tests usually need to set up test environment respectively to test the satellite receiver, set up analog signal environment and true signal environment respectively, and set up test environment respectively, need to put into manpower, and when setting up the environment again, the test can be interrupted, consequently can't realize full automation test, and efficiency of software testing receives the influence.
In summary, the problem of low test efficiency exists in the process of performing performance test on the satellite receiver at present.
Disclosure of Invention
In view of this, embodiments of the present application provide a testing apparatus, a system, and a method for a satellite receiver, so as to solve the problem of low testing efficiency in the current performance testing process for the satellite receiver.
A first aspect of the present application provides a test apparatus for a satellite receiver, including: the testing device is used for being in communication connection with an upper computer and comprises a satellite signal receiving module, a signal switching module, a signal simulation module and a signal attenuation module;
the output end of the satellite signal receiving module is connected with the first input end of the signal switching module, the output end of the signal simulating module is connected with the second input end of the signal switching module, the output end of the signal switching module is connected with the input end of the signal attenuating module, the output end of the signal attenuating module outputs radio frequency signals, and the upper computer is used for being respectively connected with the satellite signal receiving module, the signal switching module, the signal simulating module and the signal attenuating module;
the satellite signal receiving module is used for receiving real satellite signals;
the signal simulation module is used for generating a simulation satellite signal according to the generation control instruction of the upper computer;
the signal switching module is used for switching a real satellite signal and a simulated satellite signal according to a switching control instruction of the upper computer;
the signal attenuation module is used for adjusting the power of the signal input by the signal switching module according to the adjusting control instruction of the upper computer and outputting a radio frequency signal meeting the power requirement.
In one implementation manner of this embodiment, the satellite signal receiving module includes a satellite signal receiving antenna and a satellite receiver.
Furthermore, the satellite signal receiving module is also used for outputting ephemeris and positioning information to the upper computer according to the received real satellite signal.
Furthermore, the satellite signal receiving module is also used for carrying out satellite positioning according to the differential data provided by the upper computer.
A second aspect of the present application provides a test system for a satellite receiver, including the test apparatus for a satellite receiver and an upper computer in the first aspect, where the test apparatus is in communication connection with the upper computer.
In an implementation manner of this embodiment, the upper computer includes a control module and a display module;
the control module is used for generating a control instruction according to a user instruction and transmitting the control instruction to the test device so as to control the test device to enter a corresponding test state;
and the display module is used for displaying ephemeris and positioning information output to the upper computer by the testing device.
Further, the upper computer is in communication connection with the server;
and the upper computer acquires the differential data from the server and transmits the differential data to the testing device.
Furthermore, the upper computer is also used for carrying out leap second analysis according to the real satellite signal output by the testing device and updating the leap second correction number in real time.
A third aspect of the present application provides a method for testing a satellite receiver, which is applied to a test system of the satellite receiver, and includes:
outputting a simulated environment instruction to the testing device, wherein the simulated environment instruction is used for controlling the testing device to output a simulated satellite signal and enter a simulated signal testing state;
outputting a real environment instruction to the testing device, wherein the real environment instruction is used for controlling the testing device to receive a real satellite signal and enter a real signal testing state;
and acquiring differential data, and outputting the differential data to a testing device, wherein the differential data is used for controlling the testing device to enter a differential positioning function testing state.
Further, the test method further comprises:
receiving ephemeris and positioning information; the ephemeris and the positioning information are output by a satellite signal receiving module of the testing device;
and updating the leap second correction number according to the ephemeris and the positioning information.
A fourth aspect of the present application provides a terminal device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, the processor implementing the steps of the method for testing a satellite receiver according to the third aspect when executing the computer program.
A fifth aspect of the present application provides a computer-readable storage medium storing a computer program which, when executed by a processor, implements the steps of the method of testing a satellite receiver as described in the previous third aspect.
A sixth aspect of the present application provides a computer program product, which, when run on a terminal device, causes the terminal device to perform the steps of the method for testing a satellite receiver according to any one of the first aspects above.
According to the testing device, the testing system and the testing method of the satellite receiver, the built-in satellite signal receiving module is used for receiving the real satellite signals, the signal simulation module is used for generating the simulation satellite signals, the real satellite signals and the simulation satellite signals are switched according to the control instruction of the upper computer, so that the automatic switching between the simulation signal testing environment and the real signal testing environment is realized, the testing environment does not need to be built again, the satellite receiver can be tested automatically, and the testing efficiency is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a testing apparatus for a satellite receiver according to an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of a testing apparatus for a satellite receiver according to another embodiment of the present application;
fig. 3 is a schematic structural diagram of a test system of a satellite receiver according to an embodiment of the present application;
fig. 4 is a schematic structural diagram of a test system of a satellite receiver according to another embodiment of the present application;
fig. 5 is a schematic flow chart illustrating an implementation of a testing method for a satellite receiver according to an embodiment of the present application;
fig. 6 is a schematic diagram of a terminal device according to an embodiment of the present application.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.
It will be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It should also be understood that the term "and/or" as used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.
As used in this specification and the appended claims, the term "if" may be interpreted contextually as "when", "upon" or "in response to" determining "or" in response to detecting ". Similarly, the phrase "if it is determined" or "if a [ described condition or event ] is detected" may be interpreted contextually to mean "upon determining" or "in response to determining" or "upon detecting [ described condition or event ]" or "in response to detecting [ described condition or event ]".
Furthermore, in the description of the present application and the appended claims, the terms "first," "second," "third," and the like are used for distinguishing between descriptions and not necessarily for describing or implying relative importance.
Reference throughout this specification to "one embodiment" or "some embodiments," or the like, means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the present application. Thus, appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," or the like, in various places throughout this specification are not necessarily all referring to the same embodiment, but rather "one or more but not all embodiments" unless specifically stated otherwise. The terms "comprising," "including," "having," and variations thereof mean "including, but not limited to," unless expressly specified otherwise.
In order to explain the technical solution described in the present application, the following description will be given by way of specific examples.
As shown in fig. 1, the present embodiment provides a testing apparatus 100 for a satellite receiver, where the testing apparatus 100 is used for being communicatively connected with an upper computer, and specifically includes a satellite signal receiving module 110, a signal switching module 120, a signal simulating module 130, and a signal attenuating module 140.
Specifically, the output end of the satellite signal receiving module 110 is connected to the first input end of the signal switching module 120, the output end of the signal simulating module 130 is connected to the second input end of the signal switching module 120, the output end of the signal switching module 120 is connected to the input end of the signal attenuating module 140, the output end of the signal attenuating module 140 outputs a radio frequency signal, and the upper computer is connected to the satellite signal receiving module 110, the signal switching module 120, the signal simulating module 130, and the signal attenuating module 140.
The satellite signal receiving module 110 is used for receiving real satellite signals.
The signal simulation module 130 is used for generating a simulated satellite signal according to the generation control instruction of the upper computer.
The signal switching module 120 is configured to switch the real satellite signal and the simulated satellite signal according to a switching control instruction of the upper computer.
The signal attenuation module 140 is used for adjusting the power of the signal input by the signal switching module according to the adjustment control instruction of the upper computer and outputting a radio frequency signal meeting the power requirement.
Specifically, the test apparatus 100 of the satellite receiver may select an input source of the output radio frequency signal according to a test environment that needs to be established during testing, so as to establish different test environments.
Illustratively, when a simulation signal test environment needs to be established, the upper computer outputs a generation control instruction to the signal simulation module 130, the signal simulation module 130 generates a simulation satellite signal according to the generation control instruction of the upper computer, and switches the signal source to the signal simulation module 130 through the signal switching module 120 according to the switching control instruction of the upper computer, to receive the analog satellite signal outputted 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 perform power adjustment on the analog satellite signal according to the received adjustment control command, the sensitivity of the satellite receiver to be tested is tested by adjusting the transmitted power of the analog satellite signal output radio frequency signal and outputting the radio frequency signal to the satellite receiver to be tested through the signal attenuation module 140.
Illustratively, when a real signal test environment needs to be built, the upper computer outputs a signal receiving instruction to the satellite signal receiving module 110, the satellite signal receiving module 1110 receives the real satellite signal, the signal switching module 120 switches the signal source to the satellite signal receiving module 110 according to the switching control instruction of the upper computer, to receive the real satellite signals received by the satellite signal receiving module 110, and output the received real satellite signals to the signal attenuating module 140, the signal attenuation module can also adjust the power of the real satellite signals according to the received adjusting control instruction, so as to adjust the transmitted power of the real satellite signal output radio frequency signal, and output the radio frequency signal to the satellite receiver to be tested through the signal attenuation module 140, thereby testing the performance of the satellite receiver to be tested in the real environment.
Specifically, the satellite signal receiving module 110 is further configured to perform satellite positioning according to the differential data provided by the upper computer. It should be noted that the satellite signal receiving module 110 may be a satellite receiver with a high-precision positioning function, which is capable of performing satellite positioning according to differential data when receiving the differential data, and has high positioning precision. When a test environment for testing the differential positioning function needs to be established, the upper computer outputs a signal receiving instruction to the satellite signal receiving module 110 to receive a real satellite signal, then the upper computer sends a differential signal acquired from the server to the signal receiving module 110, then the signal receiving module carries out accurate positioning according to the differential data, and then a positioning result is compared with a positioning result of the satellite receiver to be tested, so that the accuracy of the differential positioning function of the satellite receiver is tested. The test device can also output the received differential data, so that the satellite receiver to be tested can also perform differential positioning according to the differential data, and further, the differential positioning function received by the satellite to be tested can be tested and the positioning accuracy can be evaluated.
It should be noted that the upper computer may be a terminal device such as a single chip microcomputer, a mobile phone, a tablet computer, a wearable device, an in-vehicle device, an Augmented Reality (AR)/Virtual Reality (VR) device, a notebook computer, an ultra-mobile personal computer (UMPC), a netbook, and a Personal Digital Assistant (PDA). The upper computer can determine the testing environment required to be set up by the user according to the input instruction of the user, then generates a corresponding control instruction, and further controls the testing device to be in a corresponding testing state.
It should be further noted that the signal attenuation module may be implemented by using an existing signal attenuator, and the upper computer outputs an adjustment control instruction to adjust the output power of the output signal, so that the power of the analog satellite signal can be adjusted, and the power of the real satellite signal can also be adjusted.
Specifically, the satellite signal receiving module 110 is further configured to output ephemeris and positioning information to the upper computer according to the received real satellite signal.
In one embodiment, as shown in fig. 2, the satellite signal receiving module 110 includes a satellite signal receiving antenna 111 and a satellite receiver 112.
Specifically, the satellite signal receiving antenna 111 is used for collecting signals transmitted from satellites, and the satellite signal receiving antenna 111 may be used for receiving navigation satellite signals, such as GPS satellite signals, beidou satellite signals, and the like, as well as satellite television signals, and may also be used for receiving other satellite signals, which is not limited herein.
Specifically, the satellite receiver 112 may be any of various conventional satellite receivers capable of processing satellite signal receiving antennas, and may further include a high-precision differential positioning function. The satellite signal receiving antenna 111 introduces the real satellite signal into the device and then supplies the real satellite signal to the built-in satellite receiver 112 and a signal source serving as the signal switching module 120, and the built-in satellite receiver 112 can also output ephemeris and positioning information to an upper computer. The positioning information may be NMEA positioning information. It should be noted that ephemeris refers to an accurate position or trajectory table of the celestial body running along with time in the GPS measurement, and is a function of time, NMEA positioning information refers to an RTCM standard protocol unified by the GPS navigation device, and in this embodiment, the positioning information output by the satellite receiver 112 refers to an output standard NMEA format statement. The satellite receiver 112 may also store the obtained ephemeris and positioning information.
It should be noted that the satellite receiver 112 includes the following operating states: 1) a normal positioning state is output, and a standard NMEA format statement is output; 2) the ephemeris output state is configured according to the upper computer control instruction so that the ephemeris output state outputs ephemeris information; 3) and in the differential positioning state, the differential positioning is realized by receiving the differential data, so that the high-precision positioning is realized.
The utility model provides a satellite receiver's testing arrangement receives true satellite signal through built-in satellite signal receiving module, generates the simulation satellite signal through signal simulation module to control command according to the host computer carries out the switching of true satellite signal and simulation satellite signal, and then realizes the automatic switch of simulation signal test environment and true signal test environment, need not to build the test environment again, can be full automatic test satellite receiver, improve efficiency of software testing. In addition, the testing device can also output and store a real satellite signal ephemeris, so that the track of the satellite can be conveniently analyzed, the signal attenuation can be realized by using the same signal attenuator for the common simulated satellite signal and the real satellite signal, the program-controlled attenuation of the real signal can be realized without additionally increasing attenuation equipment, and the cost is effectively reduced. The satellite actual environment high-precision positioning output by the testing device can be used for comparison provided for a tested receiver; the differential positioning function of the satellite receiver which is used for testing and is output by differential data can be provided, so that the differential positioning function test of the satellite receiver to be tested is realized, and the problem of low test efficiency in the process of performing the performance test on the satellite receiver at present is effectively solved.
As shown in fig. 3, the present embodiment provides a test system 10 for a satellite receiver, which includes a test apparatus 100 for a satellite receiver and an upper computer 200.
Specifically, the test apparatus for a satellite receiver is as described in the above embodiment. The upper computer 200 may be a PC having control and display functions. It should be noted that the upper computer 200 may also be a terminal device such as a single chip, a mobile phone, a tablet computer, a wearable device, a vehicle-mounted device, an Augmented Reality (AR)/Virtual Reality (VR) device, a notebook computer, an ultra-mobile personal computer (UMPC), a netbook, a Personal Digital Assistant (PDA), and the like, which is not limited herein. The upper computer 200 can output a control command to the testing apparatus, so that the testing apparatus enters a corresponding testing state (e.g., a simulation testing state, a real signal testing state, a differential positioning function testing state, etc.), and can display ephemeris and positioning information output by the testing apparatus.
In one embodiment, as shown in fig. 4, the upper computer 200 includes a control module 210 and a display module 220.
The control module 210 is configured to generate a control instruction according to a user instruction, and transmit the control instruction to the testing apparatus to control the testing apparatus to enter a corresponding testing state.
The display module 220 is used for displaying ephemeris and positioning information output by the testing device to the upper computer.
Specifically, the upper computer 200 further includes an input module for receiving a user input instruction, and the user can input an instruction of a test environment to be built through the input module. Then, the control module 210 generates a corresponding control command to the testing apparatus 100 according to the command input by the user, so as to control the testing apparatus 100 to enter a corresponding testing state.
Specifically, when the user instruction received by the upper computer 200 is to set up a simulated signal testing environment, the control module 210 outputs a control instruction to the signal simulation module 130 of the testing device 100 according to the user instruction, so as to control the signal simulation module 130 to generate a simulated satellite signal; the switching control command is output to the signal switching module 120 of the testing apparatus 100 to control the signal switching module 120 to switch the signal source to the analog satellite signal output by the signal simulating module 130, so that the testing apparatus enters an analog signal testing state.
Specifically, when the user instruction received by the upper computer 200 is to set up a real signal testing environment, the control module 210 outputs a receiving control instruction to the satellite signal receiving module 110 according to the user instruction, receives a real satellite signal through the satellite signal receiving module 110, and outputs a switching control instruction to the signal switching module 120 of the testing device 100, so as to control the signal switching module 120 to switch the signal source to the real satellite signal received by the satellite signal receiving module, thereby enabling the testing device to enter a real signal testing state.
It should be noted that, after the satellite signal receiving module receives the real satellite signal, the ephemeris and the positioning information may be output to the upper computer according to the instruction of the upper computer 200, and displayed through the display module 220 of the upper computer.
The upper computer may be further configured to send the received ephemeris and positioning information to another terminal or a server.
In one embodiment, the host computer 200 is in communication with a server 300. The server 300 is a network server capable of providing differential data, and the upper computer 200 acquires the differential data from the server by communicating with the server 300.
Specifically, the upper computer acquires differential data from the server and transmits the differential data to the testing device.
Specifically, after the upper computer transmits the differential data to the satellite receiver 112 of the testing device, the satellite receiver 112 performs differential positioning according to the differential data, so that the testing device enters a differential positioning function testing state.
Specifically, when the user instruction received by the upper 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 test apparatus 100 to control the satellite receiver to enter a differential positioning state, and then can perform differential positioning according to the differential data, so that the test apparatus enters the differential positioning function test state.
In one embodiment, the upper computer is further configured to perform leap second analysis according to the real satellite signal output by the testing device, and update the leap second correction number in real time.
Specifically, the navigation messages of the GPS satellites are arranged into a data stream in the structural form of frames and subframes, each satellite transmits the navigation messages frame by frame, and the page 18 of the fourth subframe provides current layer delay correction parameters and parameters of the relation between the GPS time and the UTC time. When the satellite receiver is just powered on, the output time is GPS time, and after the sub-frame is received, the output time is adjusted to UTC time. If an update is required, one is added to the previously saved leap second correction number. It is noted that UTC is a Universal Time Coordinated english abbreviation, which is defined and recommended by the international radio council and is held by the international Time office (BIH) on a Time scale on a second basis.
Since the testing system of the satellite receiver provided in this embodiment and the testing apparatus of the satellite receiver shown in fig. 1 of this application are based on the same concept, the technical effect thereof is the same as that of the testing apparatus of the satellite receiver shown in fig. 1 of this application, and specific contents may be referred to in the description of the first embodiment, which is not described herein again.
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-mentioned division of the functional units and modules is illustrated, and in practical applications, the above-mentioned function distribution may be performed by different functional units and modules according to needs, that is, the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-mentioned functions. Each functional unit and module in the embodiments may be integrated in one processing unit, or each unit may exist alone physically, or two or more units are integrated in one unit, and the integrated unit may be implemented in a form of hardware, or in a form of software functional unit. In addition, specific names of the functional units and modules are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present application. The specific working processes of the units and modules in the system may refer to the corresponding processes in the foregoing embodiments, and are not described herein again.
Therefore, the test system of the satellite receiver provided by this embodiment can receive the real satellite signal through the built-in satellite signal receiving module, generate the simulated satellite signal through the signal simulation module, and switch the real satellite signal and the simulated satellite signal according to the control instruction of the upper computer, thereby realizing the automatic switching of the simulated signal test environment and the real signal test environment, without re-building the test environment, and can test the satellite receiver fully automatically, thereby improving the test efficiency. In addition, the testing device can also output and store a real satellite signal ephemeris, so that the track of the satellite can be conveniently analyzed, the signal attenuation can be realized by using the same signal attenuator for the common simulated satellite signal and the real satellite signal, the program-controlled attenuation of the real signal can be realized without additionally increasing attenuation equipment, and the cost is effectively reduced. The satellite actual environment high-precision positioning output by the testing device can be used for comparison provided for a tested receiver; the differential positioning function of the satellite receiver which is used for testing and is output by differential data can be provided, so that the differential positioning function test of the satellite receiver to be tested is realized, and the problem of low test efficiency in the process of performing the performance test on the satellite receiver at present is effectively solved. And the leap second correction source can be provided for the signal simulation module, and the influence of the uncertainty of the leap second on the simulation satellite signal is avoided.
As shown in fig. 5, the present embodiment provides a method for testing a satellite receiver, which is applied to a test system of a satellite receiver, and specifically includes:
s101: and outputting a simulated environment instruction to the testing device, wherein the simulated environment instruction is used for controlling the testing device to output a simulated satellite signal and enter a simulated signal testing state.
Specifically, when the user instruction received by the upper computer is used for building a simulation signal test environment, the control module can output a simulation environment instruction to the test device according to the user instruction. Thereby enabling the testing device to enter an analog signal testing state. Specifically, the control signal simulation module generates a simulation satellite signal; the control signal switching module switches the signal source into the analog satellite signal output by the signal analog module, so that the testing device enters an analog signal testing state.
S102: and outputting a real environment instruction to the testing device, wherein the real environment instruction is used for controlling the testing device to receive a real satellite signal and enter a real signal testing state.
Specifically, when the upper computer and the received user instruction are used for setting up a real signal test environment, the control module outputs a real environment instruction to the test device according to the user instruction, so that the test device enters a real signal test state, specifically, the satellite signal receiving module is controlled to receive a real satellite signal, the signal switching module is controlled to switch the signal source to a real satellite signal received by the satellite signal receiving module, and the test device enters a real signal test state.
S103: and acquiring differential data, and outputting the differential data to a testing device, wherein the differential data is used for controlling the testing device to enter a differential positioning function testing state.
Specifically, the upper computer acquires differential data from the server, transmits the differential data to the testing device, and then enables the testing device to enter a differential positioning function testing state.
In an embodiment, before S101, the method for testing a satellite receiver further includes:
receiving ephemeris and positioning information; and the ephemeris and the positioning information are output by a satellite signal receiving module of the testing device.
It should be noted that, after the satellite signal receiving module receives the real satellite signal, the ephemeris and the positioning information can be output to the upper computer according to the instruction of the upper computer, and the ephemeris and the positioning information can be displayed through the display module of the upper computer.
And updating the leap second correction number according to the ephemeris and the positioning information.
Specifically, the navigation messages of the GPS satellites are arranged into a data stream in the structural form of frames and subframes, each satellite transmits the navigation messages frame by frame, and the page 18 of the fourth subframe provides current layer delay correction parameters and parameters of the relation between the GPS time and the UTC time. When the satellite receiver is just powered on, the output time is GPS time, and after the sub-frame is received, the output time is adjusted to UTC time. If an update is required, one is added to the previously saved leap second correction number. It is noted that UTC is a Universal Time Coordinated english abbreviation, which is defined and recommended by the international radio council and is held by the international Time office (BIH) on a Time scale on a second basis.
Since the testing method of the satellite receiver provided in this embodiment and the testing system of the satellite receiver shown in fig. 3 of this application are based on the same concept, the technical effect thereof is the same as that of the testing system of the satellite receiver shown in fig. 3 of this application, and specific contents may be referred to in the description of the first embodiment, which is not described herein again.
Therefore, the test method for the satellite receiver provided by this embodiment can also receive the real satellite signal through the built-in satellite signal receiving module, generate the simulated satellite signal through the signal simulation module, and switch the real satellite signal and the simulated satellite signal according to the control instruction of the upper computer, thereby realizing the automatic switching between the simulated signal test environment and the real signal test environment, without re-building the test environment, and being capable of testing the satellite receiver fully automatically, and improving the test efficiency. In addition, the testing device can also output and store a real satellite signal ephemeris, so that the track of the satellite can be conveniently analyzed, the signal attenuation can be realized by using the same signal attenuator for the common simulated satellite signal and the real satellite signal, the program-controlled attenuation of the real signal can be realized without additionally increasing attenuation equipment, and the cost is effectively reduced. The satellite actual environment high-precision positioning output by the testing device can be used for comparison provided for a tested receiver; the differential positioning function of the satellite receiver which is used for testing and is output by differential data can be provided, so that the differential positioning function test of the satellite receiver to be tested is realized, and the problem of low test efficiency in the process of performing the performance test on the satellite receiver at present is effectively solved. And the leap second correction source can be provided for the signal simulation module, and the influence of the uncertainty of the leap second on the simulation satellite signal is avoided.
Fig. 6 is a schematic structural diagram of a terminal device according to an embodiment of the present 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 memory 61, and a computer program 62 stored in the memory 61 and executable on the at least one processor 60, wherein the processor 60 implements the steps in any of the above-mentioned embodiments of the method for outputting a pulse per second signal when executing the computer program 62.
The terminal device 6 may be a desktop computer, a notebook, a palm computer, a cloud terminal device, or other computing devices. The terminal device may include, but is not limited to, a processor 60, a memory 61. Those skilled in the art will appreciate that fig. 6 is only an example of the terminal device 6, and does not constitute a limitation to the terminal device 6, and may include more or less components than those shown, or combine some components, or different components, such as an input/output device, a network access device, and the like.
The Processor 60 may be a Central Processing Unit (CPU), and the Processor 60 may be other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, discrete hardware component, etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The memory 61 may in some embodiments be an internal storage unit of the terminal device 6, such as a hard disk or a memory of the terminal device 6. The memory 61 may also be an external storage device of the terminal device 6 in other embodiments, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), and the like, which are equipped on the terminal device 6. Further, the memory 61 may also include both an internal storage unit and an external storage device of the terminal device 6. The memory 61 is used for storing an operating system, an application program, a Boot Loader (Boot Loader), data, and other programs, such as program codes of the computer programs. The memory 61 may also be used to temporarily store data that has been output or is to be output.
Illustratively, the computer program 62 may be divided into one or more units, which are stored in the memory 61 and executed by the processor 60 to accomplish the present application. The one or more units may be a series of computer program instruction segments capable of performing specific functions, which are used to describe the execution of the computer program 62 in the terminal device 6. For example, the computer program 62 may be divided into a signal acquisition module, a frequency calculation module, a precision setting module, and a calibration output module, and each module specifically functions as follows:
the simulation test module is used for outputting a simulation environment instruction to the test device, and the simulation environment instruction is used for controlling the test device to output a simulation satellite signal and enter a simulation signal test state;
the real test module is used for outputting a real environment instruction to the test device, and the real environment instruction is used for controlling the test device to receive a real satellite signal and enter a real signal test state;
and the differential positioning function module is used for acquiring differential data and outputting the differential data to a testing device, wherein the differential data is used for controlling the testing device to enter a differential positioning function testing state.
An embodiment of the present application further provides a network device, where the network device includes: at least one processor, a memory, and a computer program stored in the memory and executable on the at least one processor, the processor implementing the steps of any of the various method embodiments described above when executing the computer program.
The embodiments of the present application further provide a computer-readable storage medium, where a computer program is stored, and when the computer program is executed by a processor, the computer program implements the steps in the above-mentioned method embodiments.
The embodiments of the present application provide a computer program product, which when running on a mobile terminal, enables the mobile terminal to implement the steps in the above method embodiments when executed.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, all or part of the processes in the methods of the embodiments described above can be implemented by a computer program, which can be stored in a computer-readable storage medium and can implement the steps of the embodiments of the methods described above when the computer program is executed by a processor. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer readable medium may include at least: any entity or device capable of carrying computer program code to a photographing apparatus/terminal apparatus, a recording medium, computer Memory, Read-Only Memory (ROM), Random Access Memory (RAM), an electrical carrier signal, a telecommunications signal, and a software distribution medium. Such as a usb-disk, a removable hard disk, a magnetic or optical disk, etc. In certain jurisdictions, computer-readable media may not be an electrical carrier signal or a telecommunications signal in accordance with legislative and patent practice.
In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to the related descriptions of other embodiments for parts that are not described or illustrated in a certain embodiment.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus/network device and method may be implemented in other ways. For example, the above-described apparatus/network device embodiments are merely illustrative, and for example, the division of the modules or units is only one logical division, and there may be other divisions when actually implementing, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not implemented. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present application and are intended to be included within the scope of the present application.
Claims (10)
1. The testing device of the satellite receiver is characterized by being used for being in communication connection with an upper computer and comprising a satellite signal receiving module, a signal switching module, a signal simulation module and a signal attenuation module;
the output end of the satellite signal receiving module is connected with the first input end of the signal switching module, the output end of the signal simulating module is connected with the second input end of the signal switching module, the output end of the signal switching module is connected with the input end of the signal attenuating module, the output end of the signal attenuating module outputs radio frequency signals, and the upper computer is used for being respectively connected with the satellite signal receiving module, the signal switching module, the signal simulating module and the signal attenuating module;
the satellite signal receiving module is used for receiving real satellite signals;
the signal simulation module is used for generating a simulation satellite signal according to the generation control instruction of the upper computer;
the signal switching module is used for switching a real satellite signal and a simulated satellite signal according to a switching control instruction of the upper computer;
the signal attenuation module is used for adjusting the power of the signal input by the signal switching module according to the adjusting control instruction of the upper computer and outputting a radio frequency signal meeting the power requirement.
2. The apparatus for testing a satellite receiver according to claim 1, wherein the satellite signal receiving module comprises a satellite signal receiving antenna and a satellite receiver.
3. The apparatus for testing a satellite receiver according to claim 1, wherein the satellite signal receiving module is further configured to output ephemeris and positioning information to the upper computer according to the received real satellite signal.
4. The apparatus for testing a satellite receiver according to claim 1, wherein the satellite signal receiving module is further configured to perform satellite positioning according to the differential data provided by the upper computer.
5. A test system for a satellite receiver, comprising a test apparatus according to any one of claims 1 to 4 and an upper computer, the test apparatus being communicatively connected to the upper computer.
6. The satellite receiver test system of claim 5, wherein the upper computer comprises a control module and a display module;
the control module is used for generating a control instruction according to a user instruction and transmitting the control instruction to the test device so as to control the test device to enter a corresponding test state; when the user instruction is used for building an analog signal test environment, the control instruction generated by the control module is used for controlling the test device to enter an analog signal test state; when the user instruction is to set up a real signal test environment, the control instruction generated by the control module is used for controlling the test device to enter a real signal test state;
and the display module is used for displaying ephemeris and positioning information output to the upper computer by the testing device.
7. The satellite receiver testing system of claim 5, wherein the upper computer is communicatively coupled to a server;
and the upper computer acquires the differential data from the server and transmits the differential data to the testing device.
8. The system for testing a satellite receiver of claim 5, wherein the host computer is further configured to perform leap second analysis and update the leap second correction number in real time according to the real satellite signal output by the testing device.
9. A test method for a satellite receiver, wherein the test method for a satellite receiver is applied to the test system for a satellite receiver according to any one of claims 5 to 8, and the test method comprises:
outputting a simulated environment instruction to the testing device, wherein the simulated environment instruction is used for controlling the testing device to output a simulated satellite signal and enter a simulated signal testing state;
outputting a real environment instruction to the testing device, wherein the real environment instruction is used for controlling the testing device to receive a real satellite signal and enter a real signal testing state;
and acquiring differential data, and outputting the differential data to a testing device, wherein the differential data is used for controlling the testing device to enter a differential positioning function testing state.
10. The method for testing a satellite receiver according to claim 9, further comprising:
receiving ephemeris and positioning information; the ephemeris and the positioning information are output by a satellite signal receiving module of the testing device;
and updating the leap second correction number according to the ephemeris and the positioning information.
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| CN201911182272.7A CN110958059B (en) | 2019-11-27 | 2019-11-27 | Testing device, system and method of satellite receiver |
| PCT/CN2019/126762 WO2021103219A1 (en) | 2019-11-27 | 2019-12-19 | Test apparatus, system and method for satellite receiver |
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| CN201911182272.7A CN110958059B (en) | 2019-11-27 | 2019-11-27 | Testing device, system and method of satellite receiver |
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| CN113534201B (en) * | 2020-04-20 | 2022-07-26 | 千寻位置网络有限公司 | Satellite positioning test method and system |
| CN112415544A (en) * | 2020-11-26 | 2021-02-26 | 惠州Tcl移动通信有限公司 | GPS test system, method and terminal equipment |
| CN113590478B (en) * | 2021-07-17 | 2023-08-29 | 郑州威科姆华大北斗导航科技有限公司 | Automatic burning test device and method for satellite receiving module |
| CN115987845B (en) * | 2023-03-16 | 2023-07-07 | 智道网联科技(北京)有限公司 | V2X equipment testing system and method |
| CN116208237B (en) * | 2023-05-06 | 2023-07-21 | 石家庄银河微波技术股份有限公司 | Satellite communication method and device and electronic equipment |
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| CN102540206A (en) * | 2011-12-02 | 2012-07-04 | 东莞市泰斗微电子科技有限公司 | Method for testing satellite navigation receiver |
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| CN201976117U (en) * | 2011-01-06 | 2011-09-14 | 深圳市九洲电器有限公司 | Satellite receiver testing device |
| CN105093240B (en) * | 2015-09-11 | 2017-05-17 | 北京航空航天大学 | Satellite navigation terminal electromagnetic compatibility test device based on orthogonal signal input and test method |
| CN106405579B (en) * | 2016-08-29 | 2019-03-19 | 北京华力创通科技股份有限公司 | A kind of real-time satellite navigation simulation method and apparatus |
| US10644787B2 (en) * | 2017-01-31 | 2020-05-05 | Rohde & Schwarz Gmbh & Co. Kg | Method and testing system for testing a communication between a mobile device and a satellite system |
| US10739467B2 (en) * | 2018-01-18 | 2020-08-11 | Intelligent Fusion Technology, Inc. | Methods and systems for testing satellite signal receiver antenna |
| CN108490460A (en) * | 2018-02-28 | 2018-09-04 | 上海交通大学 | Automated testing method based on satellite navigation intermediate frequency data library |
| CN109407119B (en) * | 2018-09-20 | 2020-11-10 | 北京航天自动控制研究所 | All-weather high-reliability navigation receiver testing method based on multi-information-source simulation |
| CN109525306B (en) * | 2019-01-08 | 2024-05-24 | 国家广播电视总局二0二二台 | Multi-band analog satellite transponder |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102279401A (en) * | 2011-04-01 | 2011-12-14 | 北京遥测技术研究所 | Recording-type satellite signal simulation method |
| CN102540206A (en) * | 2011-12-02 | 2012-07-04 | 东莞市泰斗微电子科技有限公司 | Method for testing satellite navigation receiver |
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