Gnss module 1 pps signal stability test method, device, system and storage medium

Abstract

The application discloses a kind of GNSS module 1PPS signal stability test method, device, system and storage medium, the method includes: obtaining 1PPS signal to be tested and reference 1PPS signal;The time delay of the 1PPS signal to be tested is compensated once, and the 1PPS signal to be tested after compensation is obtained;The phase offset of the 1PPS signal to be tested after compensation and the reference 1PPS signal is obtained;According to the phase offset, the stability of the 1PPS signal to be tested is determined.The technical scheme of the present application provides a simple and effective method for whether the performance of the 1PPS signal to be tested is stable in the production line production end, the user can customize test standard, only needs to carry out time delay compensation in the process of testing, simple operation, high accuracy of result, with scalability, wide application range.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of communication, and particularly relates to a GNSS module 1PPS signal stability test method, device, system and storage medium. BACKGROUND

[0002] The GNSS module outputs a signal per second, namely a 1PPS signal output, when outputting normally. Currently, 1PPS signal testing needs to configure various instrument information and compensate the GNSS module time delay multiple times, so that the 1PPS signal of the GNSS module is synchronized with the reference clock source 1PPS signal, and then the 1PPS signal performance can be tested. The operation is complex, the application range is small, and after the GNSS module is produced, it is unable to confirm whether the performance is stable during product testing. SUMMARY

[0003] The present application aims to at least solve one of the technical problems in the related art. To this end, one object of the present application is to provide a GNSS module 1PPS signal stability test method, device, system and storage medium.

[0004] In order to solve the above technical problems, the embodiments of the present application provide the following technical solutions:

[0005] A GNSS module 1PPS signal stability test method, comprising:

[0006] acquiring a to-be-tested 1PPS signal and a reference 1PPS signal;

[0007] compensating the time delay of the to-be-tested 1PPS signal once to acquire the to-be-tested 1PPS signal after compensation;

[0008] acquiring the phase difference between the to-be-tested 1PPS signal after compensation and the reference 1PPS signal;

[0009] determining the stability of the to-be-tested 1PPS signal according to the phase difference.

[0010] Optionally, the compensating the time delay of the to-be-tested 1PPS signal once to acquire the to-be-tested 1PPS signal after compensation comprises:

[0011] acquiring the initial time difference between the to-be-tested 1PPS signal and the reference 1PPS signal;

[0012] acquiring the to-be-tested 1PPS signal after compensation according to the initial time difference; wherein the to-be-tested 1PPS signal after compensation is synchronized with the reference 1PPS signal.

[0013] Optionally, the determining the stability of the to-be-tested 1PPS signal according to the phase offset comprises:

[0014] determining whether the phase offset is valid or not;

[0015] determining the stability of the to-be-tested 1PPS signal according to the determination result of whether the phase offset is valid or not.

[0016] Optionally, the determining the stability of the to-be-tested 1PPS signal according to the determination result of whether the phase offset is valid or not comprises:

[0017] if the phase offset is valid, acquiring N times of the phase offset between the compensated to-be-tested 1PPS signal and the reference 1PPS signal within a first time, wherein the N times of the phase offset are all valid;

[0018] if the first time is greater than or equal to a preset stability time, determining that the stability of the to-be-tested 1PPS signal is stable;

[0019] wherein N is an integer greater than or equal to 1.

[0020] Optionally, if the first time is less than the preset stability time, after acquiring the N times of the phase offset, acquiring an N+1th phase offset between the compensated to-be-tested 1PPS signal and the reference 1PPS signal;

[0021] determining whether the N+1th phase offset is valid or not;

[0022] if the N+1th phase offset is invalid, determining that the stability of the to-be-tested 1PPS signal is unstable;

[0023] if the N+1th phase offset is valid and a second time is greater than or equal to the preset stability time, determining that the stability of the to-be-tested 1PPS signal is stable, wherein the second time is a sum of the first time and a time of acquiring the N+1th phase offset.

[0024] Optionally, the determining whether the phase offset is valid or not comprises:

[0025] if the phase offset is within a preset test range, determining that the phase offset is valid;

[0026] if the phase offset is not within the preset test range, determining that the phase offset is invalid.

[0027] Embodiments of the present application also provide a GNSS module 1PPS signal stability testing device, comprising:

[0028] an acquisition module, configured to acquire a to-be-tested 1PPS signal and a reference 1PPS signal;

[0029] a compensation module, configured to compensate for the time delay of the to-be-tested 1PPS signal, and obtain a compensated to-be-tested 1PPS signal;

[0030] a test module, configured to compensate for the time delay of the to-be-tested 1PPS signal once, and obtain a compensated to-be-tested 1PPS signal;

[0031] a determination module, configured to determine the stability of the to-be-tested 1PPS signal according to the phase offset.

[0032] Embodiments of the present application also provide a GNSS module 1PPS signal stability test system, comprising:

[0033] a to-be-tested module, configured to output a to-be-tested 1PPS signal;

[0034] a reference clock source, configured to output a reference 1PPS signal;

[0035] a test instrument, connected with the to-be-tested module and the reference clock source, and configured to obtain the to-be-tested 1PPS signal and the reference 1PPS signal;

[0036] the to-be-tested module is further configured to compensate for the time delay of the to-be-tested 1PPS signal once, and obtain a compensated to-be-tested 1PPS signal;

[0037] the test instrument is further configured to obtain a phase offset between the compensated to-be-tested 1PPS signal and the reference 1PPS signal;

[0038] a test machine, connected with the test instrument, and configured to determine the stability of the to-be-tested 1PPS signal according to the phase offset.

[0039] Optionally, the system further comprises a frequency divider, an output end of the reference clock source is connected with an input end of the frequency divider, an output end of the frequency divider is connected with an input end of the test instrument, and the frequency divider is configured to output the reference 1PPS signal received from the reference clock source to the test instrument through multiple channels.

[0040] Embodiments of the present application also provide an electronic device, comprising a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor, and the processor implements the method as described above when executing the computer program.

[0041] Embodiments of the present application also provide a computer storage medium, which stores a computer program, and the computer program is executed by a processor to implement the method as described above.

[0042] The embodiment of the present application has the following technical effects:

[0043] The above technical scheme of the present application has the following advantages: 1) a simple and effective method for testing whether the 1PPS signal performance is stable at the production end of the production line is provided, the user can customize the test standard, and only one delay compensation is needed during the test, the operation is simple, the result is accurate, it is scalable, and the application range is wide;

[0044] 2) the stability of the to-be-tested 1PPS signal is determined by judging whether the phase difference can be maintained within the preset stable time, the operation is simple, fast and accurate.

[0045] Additional aspects and advantages of the present application will be in part apparent and in part pointed out hereinafter. BRIEF DESCRIPTION OF DRAWINGS

[0046] Figure 1 is a flowchart of the GNSS module 1PPS signal stability test method provided by the embodiment of the present application;

[0047] Figure 2 is a block diagram of the GNSS module 1PPS signal stability test method provided by the embodiment of the present application;

[0048] Figure 3 is a structural block diagram of the GNSS module 1PPS signal stability test system provided by the embodiment of the present application. DETAILED DESCRIPTION

[0049] The embodiments of the present application will be described in detail below, and examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present application, and cannot be understood as limiting the present application.

[0050] The PPS (Pulse per second) mentioned in the present application refers to a second pulse, 1PPS signal = 1Hz = 1 time / second; GNSS (Global Navigation Satellite System) refers to a global navigation satellite system; GNSS satellite signal: the actual satellite signal is forwarded to the production test workshop by a repeater.

[0051] The embodiment of the present application provides a GNSS module 1PPS signal stability test system, which comprises: a to-be-tested module, a reference clock source, a test instrument, a test machine and the like; wherein the test instrument is connected with the to-be-tested module, the reference clock source and the test machine respectively; in combination with the system, such as Figure 1As shown, the embodiment of the present application provides a GNSS module 1PPS signal stability test method, comprising:

[0052] Step S1: obtaining a to-be-tested 1PPS signal and a reference 1PPS signal;

[0053] Step S2: compensating the time delay of the to-be-tested 1PPS signal once to obtain the to-be-tested 1PPS signal after compensation;

[0054] Step S3: obtaining the phase offset of the to-be-tested 1PPS signal after compensation and the reference 1PPS signal;

[0055] Step S4: determining the stability of the to-be-tested 1PPS signal according to the phase offset.

[0056] The embodiment of the present application provides a simple and effective method for testing whether the 1PPS signal performance is stable at the production end of the production line, the user can customize the test standard, and only needs to perform time delay compensation once in the test process, the operation is simple, the result is accurate, it is scalable, and the application range is wide.

[0057] In an optional embodiment of the present application, in step S1, specifically, the to-be-tested module is used to output the to-be-tested 1PPS signal, and the reference clock source is used to output the reference 1PPS signal; and the test instrument is used to receive and obtain the to-be-tested 1PPS signal and the reference 1PPS signal.

[0058] More specifically, in combination with Figure 2 , after the test instrument obtains the to-be-tested 1PPS signal and the reference 1PPS signal, the test instrument can further comprise:

[0059] analyzing the to-be-tested 1PPS signal and the reference 1PPS signal to obtain an analysis result and an analysis time, the analysis result can be understood as information contained in the 1PPS signal;

[0060] If the analysis is successful, it is judged that the signal is valid, and the subsequent steps are continued;

[0061] If the analysis is not successful, the analysis time of the signal is compared with a preset analysis time; if the analysis time of the signal is greater than the preset analysis time, it can be considered that the to-be-tested 1PPS signal is unstable, the test fails, and the test process is ended; if the analysis time of the signal is less than or equal to the preset analysis time, the signal is reanalyzed according to the above steps until the analysis is successful. Through the above steps, the signal is screened to reduce the storage pressure and running pressure of the system, improve the running speed of the system, and improve the accuracy of the signal test result.

[0062] In an optional embodiment of the present application, in step S2, the time delay of the to-be-tested 1PPS signal is compensated once to obtain the compensated to-be-tested 1PPS signal, which comprises:

[0063] Step S21: obtaining an initial time difference between the to-be-tested 1PPS signal and the reference 1PPS signal.

[0064] Specifically, the time difference between the time when the rising edge of the to-be-tested 1PPS signal appears and the time when the rising edge of the reference 1PPS signal appears is obtained by the test instrument as the initial time difference.

[0065] Step S22: obtaining the compensated to-be-tested 1PPS signal according to the initial time difference; wherein the compensated to-be-tested 1PPS signal is synchronized with the reference 1PPS signal.

[0066] Specifically, the test instrument sends the obtained initial time difference to the to-be-tested module, so that the to-be-tested module compensates the time delay of the to-be-tested 1PPS signal, to ensure that the compensated to-be-tested 1PPS signal is synchronized with the reference 1PPS signal, that is, the initial time difference between the compensated to-be-tested 1PPS signal and the reference 1PPS signal becomes 0 ns.

[0067] In this embodiment of the present application, the time delay of the to-be-tested 1PPS signal is compensated, which further improves the accuracy of the stability test result.

[0068] In an optional embodiment of the present application, in step S3, the phase offset between the compensated to-be-tested 1PPS signal and the reference 1PPS signal is obtained, specifically, the time difference between the rising edges of the compensated to-be-tested 1PPS signal and the reference 1PPS signal is obtained by the test instrument as the phase offset.

[0069] In an optional embodiment of the present application, in step S4, the stability of the to-be-tested 1PPS signal is determined according to the phase offset, which comprises:

[0070] Step S41: judging whether the phase offset is valid.

[0071] Step S42: determining the stability of the to-be-tested 1PPS signal according to the judgment result of whether the phase offset is valid.

[0072] Specifically, different test ranges can be preset according to different use scenarios (such as different reference clock sources or fixtures for placing the to-be-tested module), if the phase offset is within the preset test range, it is judged that the phase offset is valid; if the phase offset is not within the preset test range, it is judged that the phase offset is invalid.

[0073] More specifically, when the phase offset is invalid, it is considered that the 1PPS signal to be tested is unstable, the test fails, and the test process ends.

[0074] In addition, the above determination result can be recorded and saved together with the corresponding predicted analysis time or preset test range, so that the test data can be called when needed in the future, solving the problem that the performance of the module to be tested cannot be confirmed after production. At the same time, the above steps realize the screening of the signal, so as to reduce the storage pressure and operation pressure of the system, improve the operation speed of the system, and improve the accuracy of the signal test result.

[0075] In an optional embodiment of the present application, in step S42, the stability of the 1PPS signal to be tested is determined according to the determination result of whether the phase offset is valid, and the determination includes:

[0076] Step S421: If the phase offset is valid, the phase offset between the compensated 1PPS signal to be tested and the reference 1PPS signal is obtained N times within a first time, wherein the N phase offsets obtained are all valid.

[0077] Step S422: If the first time is greater than or equal to a preset stable time, it is determined that the stability of the 1PPS signal to be tested is stable.

[0078] Wherein, N is an integer greater than or equal to 1; N can be 1, 2, 3, 4, etc.

[0079] Step S423: If the first time is less than the preset stable time, after obtaining the N phase offsets, the phase offset between the compensated 1PPS signal to be tested and the reference 1PPS signal is obtained as the N+1th phase offset.

[0080] Step S424: Determine whether the N+1th phase offset is valid.

[0081] Step S425: If the N+1th phase offset is invalid, it is determined that the stability of the 1PPS signal to be tested is unstable.

[0082] Step S426: If the N+1th phase offset is valid, and a second time is greater than or equal to the preset stable time, it is determined that the stability of the 1PPS signal to be tested is stable; wherein the second time is the sum of the first time and the time of obtaining the N+1th phase offset.

[0083] In combination Figure 2In one example, the preset stabilization time is 30s, and N is 4; if 4 continuous and valid phase offsets are obtained within 35s, the first time is 35s, which is greater than or equal to 30s, and it is determined that the stability of the 1PPS signal to be tested is stable; if 4 continuous and valid phase offsets are obtained within 20s, the first time is 20s, which is less than 30s, and the 5th phase offset is continuously obtained; if the 5th phase offset is invalid, it is determined that the stability of the 1PPS signal to be tested is unstable, and the test is ended; if the 5th phase offset is valid, and the sum of the time of obtaining the 5th phase offset and the first time (20s) is greater than or equal to 30s, it is determined that the stability of the 1PPS signal to be tested is stable.

[0084] It can be understood that after determining the stability of the 1PPS signal to be tested, the above test data can be recorded and uploaded to a server end or the like for saving data, so that the test data can be called later when needed, and the problem that the performance of the to-be-tested module cannot be confirmed after production is solved.

[0085] According to the embodiments of the present application, whether the phase offset can be kept valid within the preset stabilization time is judged to determine the stability of the 1PPS signal to be tested, and the operation is simple, fast and accurate.

[0086] The embodiments of the present application also provide a GNSS module 1PPS signal stability test device, comprising:

[0087] The acquisition module is used to acquire the 1PPS signal to be tested and a reference 1PPS signal.

[0088] The compensation module is used to compensate the time delay of the 1PPS signal to be tested once to obtain the 1PPS signal to be tested after compensation.

[0089] The test module is used to acquire the phase offset of the 1PPS signal to be tested after compensation and the reference 1PPS signal.

[0090] The determination module is used to determine the stability of the 1PPS signal to be tested according to the phase offset.

[0091] It can be understood that the present embodiment is a device embodiment corresponding to the above-mentioned method embodiment, and the functions of each module will not be repeated here.

[0092] The embodiments of the present application also provide a GNSS module 1PPS signal stability test system, which combines Figure 3 , and comprises:

[0093] The to-be-tested module is used to output the 1PPS signal to be tested; wherein the to-be-tested module can be installed by a jig, supply power to the GNSS module, lead out the 1PPS signal to be tested, and also serve as a carrier for communication between the GNSS module and the test device.

[0094] a reference clock source, configured to output a reference 1PPS signal;

[0095] a test instrument, connected with the to-be-tested module and the reference clock source, configured to acquire the to-be-tested 1PPS signal and the reference 1PPS signal; wherein the test instrument can be a frequency counter;

[0096] the to-be-tested module is further configured to compensate the time delay of the to-be-tested 1PPS signal once, and acquire the compensated to-be-tested 1PPS signal;

[0097] the test instrument is further configured to acquire the phase difference between the compensated to-be-tested 1PPS signal and the reference 1PPS signal;

[0098] a test machine, connected with the test instrument, configured to determine the stability of the to-be-tested 1PPS signal according to the phase difference, and upload test records and generate a test report.

[0099] In an optional embodiment of the present application, the system further comprises a frequency divider, wherein an output end of the reference clock source is connected with an input end of the frequency divider, an output end of the frequency divider is connected with an input end of the test instrument, and the frequency divider is configured to output the reference 1PPS signal received from the reference clock source to the test instrument through multiple channels. In this way, the frequency divider can output multiple reference 1PPS signals simultaneously, so that multiple to-be-tested devices can be tested simultaneously, thereby saving device cost.

[0100] An embodiment of the present application further provides an electronic device, including a processor, a memory and a computer program stored in the memory and configured to be executed by the processor, wherein the processor executes the computer program to realize the method as described above.

[0101] An embodiment of the present application further provides a computer storage medium, which stores a computer program, wherein the computer program is executed by a processor to realize the method as described above.

[0102] In addition, other configurations and functions of the system of the embodiment of the present application are known to those skilled in the art, and to reduce redundancy, details are not described herein.

[0103] It is to be appreciated that the above description and the examples that follow are intended to be illustrative only and that changes can be made to the description, either functionally or chronologically, as well as changes being made concerning which elements of the description and / or examples are employed per se, all without departing from the spirit and scope of the application. It should be further appreciated that the logic and / or steps represented in the flow diagrams and / or otherwise described herein, for example, can be considered as a sequence of executable instructions executed by a logic processor, such as a processing system, including a processor, or other logic processor-based system, or in conjunction with such an instruction execution system. In this regard, the "computer-readable medium" can be any apparatus that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. The computer readable medium can comprise any one of the following: an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer readable medium include the following: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or Flash memory), an optical fiber, and a portable compact disc read-only memory (CDROM). In addition, the computer readable medium can even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, for example via optical scanning of the paper or other medium, then compiled, interpreted, or otherwise processed in a suitable manner, if necessary, and then stored in a computer memory.

[0104] It should be understood that aspects of the application can be implemented in hardware, software, firmware or combinations thereof. In the above embodiments, various steps or methods can be implemented in software or firmware that is stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any of the following technologies, or combinations thereof, can be used with the necessary hardware: a discrete logic circuit(s) having logic gates for implementing logic functions upon an application of data signals, an application specific integrated circuit having appropriate combinational logic gates, a programmable gate array(s) (PGA), a field programmable gate array (FPGA), and / or the like.

[0105] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific feature, structure, material or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. Descriptive expressions of the above terms in the present specification do not necessarily refer to the same embodiment or example. Also, the specific feature, structure, material or characteristic described can be combined in any one or more embodiments or examples in an appropriate manner.

[0106] In the description of the application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application.

[0107] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0108] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0109] In the present application, unless otherwise explicitly specified and limited, the first feature "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0110] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as a limitation on the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application.

Claims

1. A method for testing GNSS module 1PPS signal stability, characterized in that, The method comprises the following steps: acquiring a to-be-tested 1PPS signal and a reference 1PPS signal; performing one-time compensation on the time delay of the to-be-tested 1PPS signal to acquire a compensated to-be-tested 1PPS signal; acquiring the phase offset between the compensated to-be-tested 1PPS signal and the reference 1PPS signal; determining the stability of the to-be-tested 1PPS signal according to the phase offset, which comprises the following steps: judging whether the phase offset is valid; if the phase offset is within a preset test range, judging that the phase offset is valid; if the phase offset is not within the preset test range, judging that the phase offset is invalid; if the phase offset is valid, acquiring N times of the phase offset between the compensated to-be-tested 1PPS signal and the reference 1PPS signal within a first time, wherein the N phase offsets are all valid; if the first time is greater than or equal to a preset stability time, determining that the stability of the to-be-tested 1PPS signal is stable; wherein N is an integer greater than or equal to 1.

2. The method of claim 1, wherein, The one-time compensation on the time delay of the to-be-tested 1PPS signal to acquire a compensated to-be-tested 1PPS signal comprises the following steps: acquiring the initial time difference between the to-be-tested 1PPS signal and the reference 1PPS signal; acquiring the compensated to-be-tested 1PPS signal according to the initial time difference, wherein the compensated to-be-tested 1PPS signal is synchronized with the reference 1PPS signal.

3. The method of claim 1, wherein, if the first time is less than the preset stability time, acquiring the phase offset between the N+1th compensated to-be-tested 1PPS signal and the reference 1PPS signal after acquiring the N phase offsets; judging whether the N+1th phase offset is valid; if the N+1th phase offset is invalid, determining that the stability of the to-be-tested 1PPS signal is unstable; if the N+1th phase offset is valid and a second time is greater than or equal to the preset stability time, determining that the stability of the to-be-tested 1PPS signal is stable, wherein the second time is the sum of the first time and the time of acquiring the N+1th phase offset.

4. A GNSS module 1 PPS signal stability test apparatus for implementing the method according to any one of claims 1 to 3, characterized in that, The method comprises the following steps: acquiring a to-be-tested 1PPS signal and a reference 1PPS signal; performing one-time compensation on the time delay of the to-be-tested 1PPS signal to acquire a compensated to-be-tested 1PPS signal; acquiring the phase offset between the compensated to-be-tested 1PPS signal and the reference 1PPS signal; determining the stability of the to-be-tested 1PPS signal according to the phase offset.

5. A GNSS module 1 PPS signal stability test system for implementing the method according to any one of claims 1 to 3, characterized in that, The method comprises the following steps: a to-be-tested module, which is used to output a to-be-tested 1PPS signal; a reference clock source, which is used to output a reference 1PPS signal; a test instrument, which is connected with the to-be-tested module and the reference clock source and is used to acquire the to-be-tested 1PPS signal and the reference 1PPS signal; the to-be-tested module is further used to perform one-time compensation on the time delay of the to-be-tested 1PPS signal to acquire a compensated to-be-tested 1PPS signal; The test instrument is further configured to acquire a phase offset between the compensated to-be-tested 1PPS signal and the reference 1PPS signal. A test machine is connected with the test instrument, and is configured to determine stability of the to-be-tested 1PPS signal according to the phase offset.

6. The system of claim 5, wherein, Further comprising: A frequency divider, an output end of the reference clock source is connected with an input end of the frequency divider, an output end of the frequency divider is connected with an input end of the test instrument, and the frequency divider is configured to output the reference 1PPS signal received from the reference clock source to the test instrument through multiple channels.

7. An electronic device, comprising: A processor, a memory, and a computer program stored in the memory and configured to be executed by the processor, the processor executes the computer program to implement the method in any one of claims 1 to 3.

8. A computer storage medium having stored thereon a computer program, characterized in that The computer program is executed by the processor to implement the method in any one of claims 1 to 3.

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