Method, device, and storage medium for judging reference information for integrated navigation

Abstract

The application provides a judgment method, judgment device and storage medium for reference information for integrated navigation, the method includes: satellite navigation information overtime judgment; satellite navigation positioning device status judgment; satellite navigation value range judgment; Judgment, status judgment of satellite navigation positioning device and satellite navigation information of satellite navigation value range judgment, judgment of the validity of satellite navigation position information and speed information, and the current shooting satellite navigation information judged by the validity of satellite navigation position information and speed information The information is judged as valid satellite navigation information; whether the current valid satellite navigation information can be used as reference information for integrated navigation is judged to obtain reference information for integrated navigation. The application can effectively detect abnormal satellite navigation information, improve the reliability and adaptability of the method; ensure that the integrated navigation filtering process is not affected by abnormal information, and improve the reliability of the integrated navigation filtering.

Description

technical field [0001] The application belongs to the technical field of integrated navigation, and is particularly suitable for carrier rockets, missiles, etc. to navigate and fly through satellites, and specifically relates to a judgment method, a judgment device and a storage medium for reference information for integrated navigation. Background technique [0002] Since the accuracy of satellite navigation information is easily affected by external environment interference and the dynamics of the carrier itself, after abnormal satellite navigation information enters the integrated navigation filter, it will lead to inaccurate filtering estimation results, and in severe cases, the filtering results will oscillate or even diverge, which is harmful to the integrated navigation filter. The performance and reliability of the navigation system have a serious impact, which threatens the flight safety and combat effectiveness of carrier vehicles such as launch vehicles, missile we...

AI Technical Summary

Problems solved by technology

Since the absolute error threshold method uses the maximum error of the inertial navigation as a reference for setting the threshold value, the threshold value is relatively wide, which may cause the abnormal satellite navigation information with a small jump variable level to not be detected during the working process of the system, which will affect the subsequent inertia. and satellite integrated navigation accuracy

In addition, when the performance of the inertial navigation system is degraded by the absolute error threshold method, when the normal satellite navigation information is compared with the inertial navigation results, it will cause a misjudgment exceeding the threshold, and then it is no longer possible to use effective satellite navigation information to estimate the inertial navigation error. , resulting in the loss of system integrated navigation function

Since the inertial navigation accuracy is related to the working time of the system and the task profile of the system, when the working time of the integrated navigation system and the task profile change, it is necessary to continuously adjust the threshold value, and the adaptability of the integrated navigation system is limited

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