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Integrity detection method for satellite navigation vector tracking ring

A technology of vector tracking and satellite navigation, which is applied in the field of integrity detection of satellite navigation vector tracking loops, and can solve problems such as failures that cannot be detected and recovered

Active Publication Date: 2021-06-22
BEIJING RES INST OF TELEMETRY +1
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

The processing interval of this method is after the signal processing of the receiver and before the navigation calculation, so the fault of the receiver in the tracking channel will not be detected and recovered; in addition, this method needs to perform multiple positioning calculations to judge its consistency. Therefore, additional computation will be introduced

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  • Integrity detection method for satellite navigation vector tracking ring
  • Integrity detection method for satellite navigation vector tracking ring
  • Integrity detection method for satellite navigation vector tracking ring

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Embodiment Construction

[0039]Exemplary examples of the present disclosure will be described in more detail below with reference to the accompanying drawings, although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be constrained by the implementations set forth herein. limited by example. Rather, these embodiments are provided for thorough understanding of the present disclosure, and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0040] Fault detection and integrity monitoring are mainly to obtain the best performance of the navigation system. The technologies relat...

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Abstract

The invention discloses an integrity detection method for a satellite navigation vector tracking ring. The method comprises the following steps: obtaining an observation matrix H and a transfer matrix F; obtaining a system equation and an observation equation of the Kalman filter according to the observation matrix H and the transfer matrix F; obtaining a state noise covariance matrix and an observation noise covariance matrix; performing a Kalman filtering process according to a system equation and an observation equation of a Kalman filter to obtain a filtered result, and extracting a residual observed quantity part of the filtered result, namely the residual observed quantity at the current moment, as an original residual observed quantity for integrity detection; performing statistical averaging on the original residual observed quantity to obtain a residual sequence; obtaining a judgment threshold through the residual error sequence, and then judging fault occurrence according to judgment conditions. According to the invention, the Kalman filter residual error can be used to carry out autonomous integrity detection on the vector tracking loop.

Description

technical field [0001] The invention belongs to the field of autonomous integrity detection of a satellite navigation receiver, and in particular relates to an integrity detection method of a satellite navigation vector tracking loop. Background technique [0002] Integrity means that when the error of the navigation system exceeds the allowable range and cannot be used for the specified navigation work, the system sends an alarm to the user in time to terminate its ability to be used as a navigation. It comes from English Integrity, which has integrity, perfection, Complete meaning. As people continue to rely on satellite navigation, the demand for navigation and positioning applications continues to grow, and the subsequent changes in various application scenarios put forward higher requirements for the integrity of navigation receiver technology. In order to meet the requirements in the new environment and improve the accuracy and reliability of navigation and positionin...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S19/23G01S19/29G06F17/16
CPCG01S19/23G01S19/29G06F17/16
Inventor 赵天东
Owner BEIJING RES INST OF TELEMETRY
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