Time synchronization processing method and system of multimode anti-interference timing system equipment based on satellite

Abstract

The invention provides a time synchronization processing method and system of a multimode anti-interference timing system device based on a satellite, and belongs to the technical field of satellites, and the method specifically comprises the steps: carrying out the verification processing at different consistent verification moments based on the verification processing duration, determining the deviation conditions of time service modes at different consistent verification moments, and carrying out the verification processing of the time service modes at different consistent verification moments; determining interference risk time service modes of different consistent verification moments based on the deviation condition, and when the coincidence condition of the interference risk time service modes of the different consistent verification moments in the latest preset time period of the time synchronization moment meets the requirement, acquiring time synchronization data of the time synchronization moment, and the time synchronization processing strategy of the time synchronization moment is determined by combining the time synchronization data with the overlapped data of the interference risk time service mode in the latest preset time period, so that the reliability of time synchronization processing is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of satellites, and particularly relates to a time synchronization processing method and system for a multi-mode anti-jamming time synchronization device based on satellites. Background Art

[0002] The time synchronization device provides information such as time, position, and frequency. The accuracy and reliability of its time synchronization processing are crucial. In existing technical solutions, it is often based on three time synchronization modes: satellite navigation, short wave, and long wave. Once interference occurs in one type of time synchronization mode, it may lead to the reliability of the overall time synchronization processing not meeting the requirements.

[0003] Therefore, in order to implement an integrated anti-jamming technology based on antennas, signal processing, and data post-processing, existing technical solutions determine the time synchronization processing methods for different time periods in the case of abnormal interference of the time synchronization device. However, the following technical problems exist in the above technical solutions: When using the multi-mode for time synchronization processing, the existing technical solutions ignore the consistency of different time synchronization modes in different time periods. Specifically, for the time synchronization device, different time synchronization modes have different interference risks at different time synchronization moments. Therefore, if a differential consistency verification processing strategy is determined in different time periods according to the differences in interference risks, the accuracy of the time synchronization processing result cannot be guaranteed.

[0004] To solve the above technical problems, the present application provides a time synchronization processing method and system for a multi-mode anti-jamming time synchronization device based on satellites. Summary of the Invention

[0005] To achieve the object of the present invention, the present invention adopts the following technical solutions: Specifically, the present application provides a time synchronization processing method for a multi-mode anti-jamming time synchronization device based on satellites, specifically including: S1 Determine the consistent deviation moments of different time synchronization modes based on the deviation situations between the time synchronization device in different time synchronization modes and other time synchronization modes. When the coincidence of the consistent deviation moments of different time synchronization modes can meet the requirements, proceed to the next step; S2 Determine the consistent verification moments based on the coincidence of the consistent deviation moments of different time synchronization modes, and determine the verification processing durations of different consistent verification moments based on the interval data between the consistent verification moments and different time synchronization processing moments and the coincidence of the consistent deviation moments. S3 performs verification processing among different consistent verification moments based on the verification processing duration, determines the deviation conditions of the timing modes of different consistent verification moments, determines the interference risk timing modes of different consistent verification moments based on the deviation conditions, and when the coincidence situation of the interference risk timing modes of different consistent verification moments within the most recent preset period at the time synchronization moment meets the requirements, proceeds to the next step; S4 obtains the time synchronization data at the time synchronization moment, and determines the time synchronization processing strategy at the time synchronization moment by combining the time synchronization data with the coincidence data of the interference risk timing modes within the most recent preset period.

[0006] The beneficial effects of the present invention are as follows: In this application, by determining whether the coincidence situation of the interference risk timing modes of different consistent verification moments within the most recent preset period at the time synchronization moment meets the requirements, the evaluation of the difference in the interference risk faced by the timing mode is realized from the perspective of the coincidence situation of the interference risk timing modes of the consistent verification moments within the most recent preset period. Furthermore, the determination of the differentiated time synchronization processing strategy is realized from the perspective of the difference in the interference risk, ensuring the reliability and accuracy of the time synchronization processing.

[0007] Determining the time synchronization processing strategy at the time synchronization moment based on the time synchronization data at the time synchronization moment and the coincidence data of the interference risk timing modes within the most recent preset period not only considers the deviation situation of the timing results of different timing modes at the time synchronization moment, but also considers the coincidence situation between the timing modes with deviation situations and the interference risk timing modes, realizing the comprehensive evaluation of the interference risk of different timing modes from multiple dimensions and improving the accuracy of the time synchronization processing result.

[0008] A further technical solution lies in that the timing mode includes a satellite navigation mode, a shortwave mode, and a longwave mode.

[0009] A further technical solution lies in that the deviation situation between the timing mode and other timing modes includes the deviation amount between the timing result of the timing mode and the timing results of other timing modes.

[0010] A further technical solution lies in that the consistent deviation moment of the timing mode is the moment when the timing result of the timing mode is inconsistent with the timing results of other timing modes.

[0011] A further technical solution lies in that determining that the coincidence situation of the consistent deviation moments can meet the requirements specifically includes: Based on the distribution data of the consistent deviation moments of different timing modes, determining the moment when the consistent deviation moments of different timing modes coincide, and using it as the deviation coincidence moment; Determine the deviation coincidence ratio of different timing modes according to the composition ratio of the consistent deviation moments in different timing modes at the deviation coincidence moment; Based on the deviation coincidence ratio of different timing modes, determine whether the coincidence situation of the consistent deviation moments can meet the requirements.

[0012] A further technical solution lies in that the method for determining the timing processing strategy of the timing moment is as follows: Based on the timing data of the timing moment, determine the number of moments when different timing modes in the timing period of the timing moment are inconsistent with other timing modes, and use it as the number of timing deviation moments; Take the timing mode that is inconsistent with other timing modes as the deviation timing mode, and based on the coincidence data between the deviation timing mode and the interference risk timing mode, determine the number of consistent verification moments when the deviation timing mode belongs to the interference risk timing mode, and use it as the number of risk interference moments; Determine the timing processing strategy of the timing moment through the number of deviation moments and the number of risk interference moments of different deviation timing modes.

[0013] In a second aspect, the present invention provides a computer system, including: a memory and a processor connected by communication, and a computer program stored on the memory and capable of running on the processor. When the processor runs the computer program, it executes the above-mentioned timing processing method of a satellite-based multi-mode anti-jamming time synchronization device.

[0014] Other features and advantages will be described in the subsequent description, and some of them will become obvious from the description, or be understood by implementing the present invention. The objectives and other advantages of the present invention are achieved and obtained by the structures specifically pointed out in the description and the drawings.

[0015] To make the above-mentioned objectives, features, and advantages of the present invention more obvious and understandable, the following specifically enumerates preferred embodiments and, in conjunction with the accompanying drawings, makes a detailed description as follows. Description of the Drawings

[0016] By referring to the drawings and describing its exemplary embodiments in detail, the above and other features and advantages of the present invention will become more obvious.

[0017] Figure 1 is a flowchart of a timing processing method of a satellite-based multi-mode anti-jamming time synchronization device; Figure 2 is a flowchart for determining whether the coincidence situation of the consistent deviation moments can meet the requirements; Figure 3 is a flowchart of a method for determining the verification processing duration of the consistent verification moment; Figure 4 It is a flowchart of a method for determining the time synchronization processing strategy for the time synchronization moment. Detailed implementation manners

[0018] Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in various forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this invention will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art. Like reference numerals in the figures denote like or similar structures, and thus their detailed description will be omitted.

[0019] The terms "a", "an", "the", and "said" are used to denote the presence of one or more elements / components / etc.; the terms "comprising" and "having" are used to denote an open inclusion meaning and mean that there may be additional elements / components / etc. in addition to the listed elements / components / etc.

[0020] Example 1 To solve the above problems, according to one aspect of the present invention, as Figure 1 shown, a time synchronization processing method for a satellite-based multi-mode anti-jamming time synchronization device is provided, specifically including: S1 Determine the consistent deviation moments of different timing modes based on the deviation situation between the timing mode of the time synchronization device and other timing modes. When the coincidence situation of the consistent deviation moments of different timing modes can meet the requirements, proceed to the next step; Further, the timing modes include satellite navigation mode, shortwave mode, and longwave mode.

[0021] Specifically, the deviation situation between the timing mode and other timing modes includes the deviation amount between the timing result of the timing mode and the timing results of other timing modes.

[0022] It should be noted that the consistent deviation moment of the timing mode is the moment when the timing result of the timing mode is inconsistent with the timing results of other timing modes.

[0023] It can be understood that, as Figure 2 shown, determining that the coincidence situation of the consistent deviation moments can meet the requirements specifically includes: Based on the distribution data of the consistent deviation moments of different timing modes, determine the moment when the consistent deviation moments of different timing modes all coincide, and use it as the deviation coincidence moment; According to the composition ratio of the consistent deviation moments in different timing modes at the deviation coincidence moment, determine the deviation coincidence ratio of different timing modes; Determine whether the coincidence of consistent deviation times can meet the requirements based on the deviation coincidence ratio of different timing modes.

[0024] It can be understood that when there is a timing mode with a deviation coincidence ratio less than the preset ratio threshold, it is determined that the coincidence of consistent deviation times cannot meet the requirements.

[0025] In another embodiment, if the average value of the deviation coincidence ratios of different timing modes does not meet the requirements, it is determined that the coincidence of consistent deviation times cannot meet the requirements, where when the average value is greater than the preset threshold, it is determined that the average value of the deviation coincidence ratios of different timing modes does not meet the requirements.

[0026] It should be noted that when the coincidence of different consistent deviation times cannot meet the requirements, timing verification processing needs to be performed at different timing moments. Specifically, when the continuous duration in which the timing results of different timing modes are all the same is greater than the duration threshold, it is used as the timing result.

[0027] It can be understood that the duration threshold is determined according to the average value of the deviation coincidence ratios of different timing modes. Specifically, it is determined according to the product of the difference between 1 and the average value of the deviation coincidence ratios of different timing modes and the preset ratio factor.

[0028] In another possible embodiment, determining that the coincidence of consistent deviation times can meet the requirements specifically includes: S11 Use the distribution data of the consistent deviation times of different timing modes to determine the times when the consistent deviation times of different timing modes all coincide, and use them as the deviation coincidence times. According to the composition ratio of the consistent deviation times in different timing modes at the deviation coincidence times, determine the deviation coincidence ratio of different timing modes; It can be understood that in the above steps, if the quantity ratio of the deviation coincidence times or the quantity of the consistent deviation times excluding the deviation coincidence times does not meet the requirements, that is, is greater than the threshold, it means that the consistent deviation times of different timing modes do not coincide. Therefore, on this basis, it shows that the distribution state of the interference factors of different timing modes is relatively scattered. To ensure the reliability of the timing process, it can be directly determined that the coincidence of consistent deviation times cannot meet the requirements.

[0029] In addition, it should be noted that when both the proportion of the number of deviation coincidence moments and the number of consistent deviation moments excluding the deviation coincidence moments meet the requirements, and when the proportion of the number of deviation coincidence moments is greater than 0.9 or the number of consistent deviation moments excluding the deviation coincidence moments is small, that is, within a certain range, at this time, the consistent deviation moments of different timing modes are relatively coincident and the interference factors are relatively consistent. Therefore, it can be directly determined that the coincidence of the consistent deviation moments can meet the requirements.

[0030] Furthermore, if the proportion of the number of deviation coincidence moments is not greater than 0.9 and the number of consistent deviation moments excluding the deviation coincidence moments is not within a certain range, at this time, it is still necessary to further determine the deviation coincidence ratio of different timing modes. When there is a timing mode with a deviation coincidence ratio that does not meet the requirements, that is, when there is a timing mode with a deviation coincidence ratio less than the preset ratio threshold, it is determined that the coincidence of the consistent deviation moments cannot meet the requirements. Only when none of the above situations exist is it necessary to proceed to the next step to determine the deviation date.

[0031] S12 Based on the distribution data of the consistent deviation moments of different timing modes, determine the number of consistent deviation moments of different timing modes. Take the consistent deviation moments excluding the deviation coincidence moments as other deviation moments, and determine the deviation date according to the proportion of the distribution quantity of other deviation moments on different dates; It can be understood that the deviation date is the date with a distribution quantity proportion greater than the preset proportion threshold, indicating that the number of other deviation moments in the historical dates is relatively large, so the influence degree on the accuracy of the timing mode is relatively high.

[0032] Specifically, it should be noted that in the above steps, if there is a timing mode with the number of other deviation moments not meeting the requirements, it means that there is a timing mode with a relatively large number of consistent deviation moments excluding the deviation coincidence moments. Specifically, it can be determined by means of a threshold. At this time, it can be directly determined that the coincidence of the consistent deviation moments cannot meet the requirements.

[0033] If there is no timing mode with the number of other deviation moments not meeting the requirements, it means that the number of other deviation moments of different timing modes is not large. Therefore, on this basis, it is still necessary to determine whether there is no deviation date for different timing modes. When there is no deviation date, it means that the distribution of other deviation moments of different timing modes is relatively dispersed. Therefore, on this basis, it can be directly determined that the coincidence of the consistent deviation moments cannot meet the requirements.

[0034] If there is a deviation date, it is necessary to further determine the proportion of the number of deviation dates of different timing modes. Specifically, if the proportion of the number of deviation dates is less than the preset proportion of the number of deviation dates, it indicates that the distribution of other deviation times of the timing mode is relatively scattered. Therefore, it can be directly determined that the coincidence of consistent deviation times cannot meet the requirements, and only in other cases will it proceed to the next step.

[0035] S13 Based on the deviation coincidence ratio of different timing modes, the proportion of the number of deviation dates, and the coincidence of deviation dates with other timing modes, determine whether the coincidence of consistent deviation times can meet the requirements.

[0036] In addition, it can be understood that in a possible embodiment, in the above steps, the average value of the proportion of the number of deviation dates of different timing modes and the proportion of the number of deviation dates that coincide with other excluded timing modes is used as the weight value of different timing modes, and the coincidence ratio weight sum is determined according to the weight sum of the deviation coincidence ratios of different timing modes.

[0037] It should be noted that when the coincidence ratio weight sum is greater than the preset weight threshold, it is determined that the coincidence of consistent deviation times can meet the requirements.

[0038] S2 Determine the consistent verification time according to the coincidence of consistent deviation times of different timing modes, and based on the interval data between the consistent verification time and different timing processing times and the coincidence of consistent deviation times, determine the verification processing duration of different consistent verification times; Furthermore, the consistent verification time is the time when the coincidence times of consistent deviation times of different timing modes meet the requirements. Specifically, the time when the coincidence times are greater than the preset coincidence times is used as the consistent verification time.

[0039] It can be understood that the timing processing time is the preset time that needs to be processed for timing.

[0040] Specifically, as Figure 3 shown, the method for determining the verification processing duration of the consistent verification time is: According to the coincidence of consistent deviation times of the consistent verification time, determine the coincidence times of consistent deviation times of different timing modes; Take the timing processing time between the current consistent verification time and the next consistent verification time as the target time, and based on the interval data with different target times, determine the interval duration with the target time, and take the maximum value of the interval duration between the interval duration with the target time and the timing processing duration with the target time as the maximum interval duration; Determine the verification processing duration of the consistent verification time through the coincidence times and the maximum interval duration.

[0041] It should be noted that the verification processing duration of the consistent verification time is determined by the number of coincidences and the maximum interval duration, specifically including: Construct a preset mapping model, and construct a coincidence number interval and an interval duration interval corresponding to different preset processing durations; Take the preset processing duration in which both the number of coincidences and the maximum interval duration fall within the coincidence number interval and the interval duration interval as the verification processing duration of the consistent verification time.

[0042] In another embodiment, based on the number of coincidences and the maximum interval duration, construct a mathematical model based on the analytic hierarchy process, take the number of coincidences and the maximum interval duration as the input quantities of the mathematical model, and determine the verification processing duration of the consistent verification time.

[0043] In another possible embodiment, the method for determining the verification processing duration of the consistent verification time is as follows: S21 Determine the number of coincidences of the consistent deviation time of different timing modes according to the coincidence situation of the consistent deviation time of the consistent verification time, and determine the proportion of the number of coincidences of different timing modes at the consistent deviation time of the consistent verification time in the total number of coincidences of the consistent deviation time, so as to determine the proportion of the number of coincidences of different timing modes at the consistent verification time; It can be understood that in the above steps, if the number of coincidences of different timing modes at the consistent verification time is greater than the preset coincidence number threshold, it indicates that the interference risk at the consistent verification time is relatively large. Therefore, it can be directly determined to use a preset duration to determine the verification processing duration of the consistent verification time.

[0044] In addition, it should be noted that if the number of coincidences of different timing modes at the consistent verification time is not greater than the preset coincidence number threshold, at this time, it is also necessary to further determine the proportion of the number of coincidences of different timing modes at the consistent verification time. When there is a timing mode whose proportion of the number of coincidences at the consistent verification time does not meet the requirements, that is, is greater than the threshold, there is a timing mode with a relatively large proportion of the number of coincidences at this time. Therefore, in order to ensure the verification reliability of the timing mode with a relatively large proportion of the number of coincidences, it can be directly determined to use a preset duration to determine the verification processing duration of the consistent verification time.

[0045] In addition, it can be understood that if there is no timing mode in which the proportion of the coincidence times of the agreed verification times does not meet the requirements, it is further necessary to determine whether the average value of the proportion of the coincidence times of the agreed verification times of different timing modes is greater than the preset coincidence proportion value. If so, it indicates that the agreed verification time is very important for the verification processing of different timing modes, and then it can be directly determined to adopt a preset duration to determine the verification processing duration of the agreed verification time. In other cases, the determination of the verification requirement value continues.

[0046] S22 uses the time synchronization processing time between the current time and the next agreed verification time as the target time. Based on the interval data between different target times, the interval duration between the current time and the target time is determined, and the maximum value of the interval durations between the current time and different target times is used as the maximum interval duration. Based on the interval durations between the current time and different target times, the verification requirement value of the agreed verification time is determined. It should be noted that in the above steps, if the maximum interval duration is greater than the preset interval duration threshold, it means that in order to ensure the reliability of the time synchronization result of the above time synchronization processing time, a preset duration is used to determine the verification processing duration of the agreed verification time in the agreed verification time.

[0047] In addition, it should be further noted that in the above steps, if the maximum interval duration is not greater than the preset interval duration threshold, it is further necessary to determine whether the number of time synchronization processing times with an interval duration greater than the preset duration threshold meets the requirements. When the number of time synchronization processing times with an interval duration greater than the preset duration threshold is large, that is, greater than the threshold, it means that in order to ensure the reliability of the time synchronization result of the above time synchronization processing time, a preset duration is used to determine the verification processing duration of the agreed verification time in the agreed verification time.

[0048] In a possible embodiment, the requirement value of different target times can be determined according to the product of the interval duration between different target times and the preset weight value, and the verification requirement value is determined by the sum of the requirement values of different target times.

[0049] It should be noted that the value range of the verification requirement value in the above steps is between 0 and 1. When the verification requirement value is greater than the preset verification requirement threshold, the verification requirement degree is relatively high at this time. Therefore, a preset duration is used to determine the verification processing duration of the agreed verification time in the agreed verification time.

[0050] S23 determines the verification processing duration of the agreed verification time through the proportion of the coincidence times of different timing modes at the agreed verification time and the verification requirement value.

[0051] In one possible embodiment, the timing verification value is determined according to the proportion of the coincidence times of the consistency verification moments in different timing modes and the average value of the verification requirement values, and the verification processing duration of the consistency verification moments is determined according to the preset verification processing duration corresponding to the timing verification value.

[0052] S3 performs verification processing among different consistency verification moments based on the verification processing duration, determines the deviation situation of the timing modes of different consistency verification moments, determines the interference risk timing mode of different consistency verification moments based on the deviation situation, and when the coincidence situation of the interference risk timing modes of different consistency verification moments within the nearest preset time period meets the requirements, proceeds to the next step; Further, performing verification processing among different consistency verification moments based on the verification processing duration specifically includes: Among the consistency verification moments, when the continuous duration during which the timing results of different timing modes are all consistent is greater than the verification processing duration, it is used as the timing result, where the duration threshold is greater than the verification processing duration.

[0053] Specifically, the method for determining the interference risk timing mode of the consistency verification moment is: The moment when the timing mode in the consistency verification moment is inconsistent with the timing results of other timing modes is used as the result deviation moment; According to the distribution data of the result deviation moments in the consistency verification moments, it is determined whether the timing mode is the interference risk timing mode of the consistency verification moment.

[0054] It can be understood that when the number of the result deviation moments in the consistency verification moments is within the deviation moment number range, that is, in the case of being relatively large, it is determined that the timing mode is the interference risk timing mode of the consistency verification moment.

[0055] In another possible embodiment, the method for determining the interference risk timing mode of the consistency verification moment is: The moment when the timing mode in the consistency verification moment is inconsistent with the timing results of other timing modes is used as the result deviation moment; According to the distribution data of the result deviation moments in the consistency verification moments, the number of interval moments between different result deviation moments is determined; Through the number of interval moments between different result deviation moments, it is determined whether the timing mode is the interference risk timing mode of the consistency verification moment.

[0056] In addition, it should be noted that when the average value of the number of interval moments between different result deviation moments is less than the preset interval moment number threshold, it is determined that the timing mode is the interference risk timing mode of the consistency check moment.

[0057] Furthermore, it is determined that the coincidence situation of the interference risk timing mode meets the requirements, specifically including: Based on the coincidence situation of the interference risk timing modes of different consistency check moments within the most recent preset time period of the time synchronization moment, determine the number of consistency check moments corresponding to different interference risk timing modes; According to the number of consistency check moments corresponding to different interference risk timing modes, determine whether the coincidence situation of the interference risk timing mode meets the requirements.

[0058] Specifically, when there is an interference risk timing mode with the number of corresponding consistency check moments greater than the consistency moment number threshold, it is determined that the coincidence situation of the interference risk timing mode does not meet the requirements.

[0059] It should be noted that when the coincidence situation of the interference risk timing mode does not meet the requirements, only when the continuous duration in which the timing results of different timing modes are consistent among the time synchronization moments is greater than the duration threshold, is it used as the timing result.

[0060] S4 Obtain the time synchronization data of the time synchronization moment, and combine the time synchronization data with the coincidence data of the interference risk timing mode within the most recent preset time period to determine the time synchronization processing strategy of the time synchronization moment.

[0061] It can be understood that as Figure 4 shown, the method for determining the time synchronization processing strategy of the time synchronization moment is: Based on the time synchronization data of the time synchronization moment, determine the number of moments when different timing modes in the time synchronization period of the time synchronization moment are inconsistent with other timing modes, and use it as the time synchronization deviation moment number; Regard the timing mode that is inconsistent with other timing modes as the deviation timing mode, and based on the coincidence data of the deviation timing mode and the interference risk timing mode, determine the number of consistency check moments of the deviation timing mode belonging to the interference risk timing mode, and use it as the risk interference moment number; Determine the time synchronization processing strategy of the time synchronization moment through the deviation moment number and the risk interference moment number of different deviation timing modes.

[0062] It should be noted that the time synchronization data is the time synchronization results of different time dissemination modes within a preset unit time period at the time synchronization moment. The value range of the preset unit time period is between 1 minute and 5 minutes, and specifically, it is determined according to the number of interference risk time dissemination modes within the recent preset time period. The more the number of interference risk time dissemination modes, the longer the preset unit time period. Specifically, it can be determined according to the preset corresponding relationship between the number of interference risk time dissemination modes and the preset unit time period.

[0063] It can be understood that the time synchronization processing strategy at the time synchronization moment is determined by the number of deviation moments and the number of risk interference moments of different deviation time dissemination modes. When there is no deviation time dissemination mode, there is no need to perform time synchronization verification processing at the time synchronization moment; When there is a deviation time dissemination mode, obtain the number of deviation moments of different deviation time dissemination modes. When the number of deviation time dissemination modes is 2 or more, only when the continuous duration in which the time synchronization results of different time dissemination modes at the time synchronization moment are consistent is greater than the duration threshold, is it used as the time synchronization result.

[0064] If the number of time dissemination deviation modes is only 1, determine the number of its deviation moments. When the number of deviation moments of the time dissemination deviation mode is greater than the preset deviation quantity value, it indicates that the number of its deviation moments is relatively large. Therefore, only when the continuous duration in which the time synchronization results of different time dissemination modes at the time synchronization moment are consistent is greater than the duration threshold, is it used as the time synchronization result.

[0065] In another embodiment, if the number of deviation moments of the time dissemination deviation mode is not greater than the preset deviation quantity value, it is also necessary to determine whether the sum of the number of deviation moments and the number of risk interference moments of the deviation time dissemination mode meets the requirements, that is, whether it is greater than the preset quantity threshold. When it is greater than the preset quantity threshold, it indicates that the interference risk is relatively large. Therefore, only when the continuous duration in which the time synchronization results of different time dissemination modes at the time synchronization moment are consistent is greater than the duration threshold, is it used as the time synchronization result.

[0066] In addition, when it is not greater than the preset quantity threshold, the sum of the number of deviation moments and the number of risk interference moments of the deviation time dissemination mode is used as the total abnormal quantity. Based on the preset time synchronization duration corresponding to the total abnormal quantity, only when the continuous duration in which the time synchronization results of different time dissemination modes at the time synchronization moment are consistent is greater than the preset time synchronization duration, is it used as the time synchronization result.

[0067] Embodiment 2 In a second aspect, the present invention provides a computer system, comprising: a memory and a processor connected by communication, and a computer program stored on the memory and capable of running on the processor, wherein when the processor runs the computer program, it executes the above-described time synchronization processing method of a satellite-based multi-mode anti-jamming timekeeping device.

[0068] Each embodiment in this specification is described in a progressive manner. For the parts that are the same or similar among the embodiments, reference can be made to each other. Each embodiment focuses on the differences from other embodiments. In particular, for the embodiments of the device, equipment, and non-volatile computer storage medium, since they are basically similar to the method embodiments, the description is relatively simple, and the relevant parts can refer to the partial description of the method embodiments.

[0069] The above describes specific embodiments of this specification. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recited in the claims may be executed in a different order than in the embodiments and still achieve the desired result. Additionally, the processes depicted in the drawings do not necessarily require the specific order or sequential order shown to achieve the desired result. In certain embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0070] The above is only one or more embodiments of this specification and is not intended to limit this specification. For those skilled in the art, one or more embodiments of this specification can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of one or more embodiments of this specification shall be included within the scope of the claims of this specification.

Claims

1. A time synchronization processing method for a satellite-based multi-mode anti-jamming timekeeping device, characterized in that Specifically include: Based on the deviation situation between the time synchronization device in different time service modes and other time service modes, determine the consistent deviation moments of different time service modes. When the coincidence situation of the consistent deviation moments of different time service modes meets the requirements, proceed to the next step; Determine the consistent verification moments according to the coincidence situation of the consistent deviation moments of different time service modes, and based on the interval data between the consistent verification moments and different time alignment processing moments and the coincidence situation of the consistent deviation moments, determine the verification processing duration of different consistent verification moments; Perform verification processing among different consistent verification moments based on the verification processing duration, determine the deviation situation of the time service modes of different consistent verification moments, and based on the deviation situation, determine the interference risk time service modes of different consistent verification moments. When the coincidence situation of the interference risk time service modes of different consistent verification moments within the nearest preset time period meets the requirements, proceed to the next step; Obtain the time alignment data of the time alignment moment, and combine the time alignment data with the coincidence data of the interference risk time service modes within the nearest preset time period to determine the time alignment processing strategy of the time alignment moment.

2. The time synchronization processing method of the satellite-based multi-mode anti-jamming timekeeping device according to claim 1, characterized in that, The time service modes include satellite navigation mode, shortwave mode, and longwave mode.

3. The time synchronization processing method of the satellite-based multi-mode anti-jamming timekeeping device according to claim 1, characterized in that The deviation situation between the time service mode and other time service modes includes the deviation amount between the time service result of the time service mode and the time service results of other time service modes.

4. The time synchronization processing method of the satellite-based multi-mode anti-jamming timekeeping device according to claim 1, characterized in that, The consistent deviation moment of the time service mode is the moment when the time service results of the time service mode and other time service modes are both inconsistent.

5. The time synchronization processing method of the satellite-based multi-mode anti-jamming timekeeping device according to claim 1, characterized in that Determining that the coincidence situation of the consistent deviation moments meets the requirements specifically includes: Based on the distribution data of the consistent deviation moments of different time service modes, determine the moment when the consistent deviation moments of different time service modes all coincide, and use it as the deviation coincidence moment; According to the composition ratio of the consistent deviation moments in different time service modes at the deviation coincidence moment, determine the deviation coincidence ratio of different time service modes; Based on the deviation coincidence ratios of different time service modes, determine whether the coincidence situation of the consistent deviation moments can meet the requirements.

6. The time synchronization processing method of the satellite-based multi-mode anti-jamming timekeeping device according to claim 5, characterized in that, When there is a time service mode with a deviation coincidence ratio less than the preset ratio threshold, it is determined that the coincidence situation of the consistent deviation moments cannot meet the requirements.

7. The time synchronization processing method of the satellite-based multi-mode anti-jamming timekeeping device according to claim 1, characterized in that, The consistent verification moment is the moment when the coincidence times of the consistent deviation moments of different time service modes meet the requirements.

8. The time synchronization processing method of the satellite-based multi-mode anti-jamming timekeeping device according to claim 1, characterized in that, The method for determining the verification processing duration of the consistent verification moment is: According to the coincidence situation of the consistent deviation moments of the consistent verification moment, determine the coincidence times of the consistent deviation moments of different time service modes; Take the time alignment processing moment between the consistent verification moment and the next consistent verification moment as the target moment, based on the interval data with different target moments, determine the interval duration with the target moment, and take the maximum value of the interval duration of the time alignment processing duration with the target moment as the maximum interval duration; Determine the verification processing duration of the consistent verification moment through the coincidence times and the maximum interval duration.

9. The time synchronization processing method of the satellite-based multi-mode anti-jamming timekeeping device according to claim 1, characterized in that The method for determining the time alignment processing strategy of the time alignment moment is: Determine the number of moments when different timing modes in the timing period of the timing moment are inconsistent with other timing modes based on the timing data of the timing moment, and use it as the number of timing deviation moments; Regard the timing mode that is inconsistent with other timing modes as the deviation timing mode, and determine the number of consistent verification moments when the deviation timing mode belongs to the interference risk timing mode based on the coincidence data between the deviation timing mode and the interference risk timing mode, and use it as the number of risk interference moments; Determine the timing processing strategy for the timing moment based on the number of deviation moments and the number of risk interference moments of different deviation timing modes.

10. A computer system, comprising: A memory and a processor connected by communication, and a computer program stored on the memory and capable of running on the processor, wherein when the processor runs the computer program, it executes the timing processing method of a satellite-based multi-mode anti-interference timekeeping device according to any one of claims 1-9.

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