A Method for Allocation of Availability Continuity Integrity Index of Satellite Navigation System

A satellite navigation system and index allocation technology, which is applied in the field of satellite navigation system availability, continuity and integrity index allocation, and can solve problems such as the inability to meet the allocation requirements of heterogeneous and complex mixed constellation indicators, and the inability to achieve the allocation of continuity and integrity indicators.

Inactive Publication Date: 2019-01-08
CHINA AEROSPACE STANDARDIZATION INST
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Problems solved by technology

The US GPS satellite navigation system uses the Markov chain to carry out the allocation of availability indicators. This method is suitable for constellations composed of similar orbits, and cannot meet the needs of index allocation for heterogeneous and complex mixed constellations, and cannot achieve the allocation of continuity and integrity indicators.

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  • A Method for Allocation of Availability Continuity Integrity Index of Satellite Navigation System
  • A Method for Allocation of Availability Continuity Integrity Index of Satellite Navigation System
  • A Method for Allocation of Availability Continuity Integrity Index of Satellite Navigation System

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Embodiment 1

[0037] Embodiment 1. The present invention provides a method for allocating availability continuity and integrity indicators of a satellite navigation system, which decomposes service availability, continuity, and integrity indicators into single-satellite signal availability, continuity, and integrity indicators, and then decomposes them into long-term indicators. There are three types of outage indicators, namely outage, short-term planned outage, and short-term unplanned outage, which can provide an operable, easy-to-implement and effective method for the allocation of service performance indicators. The specific process is as figure 1 shown, including the following steps:

[0038] Step 1, constellation state probability calculation.

[0039] According to the constellation value α of the satellite navigation system k,n and service availability A service , where M is the total number of satellites in the constellation, is the number of all combinations of k satellite fa...

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Abstract

The invention discloses an availability, continuity and completeness index distribution method of a satellite navigation system. The method comprises the following steps that according to a constellation value and service availability of the satellite navigation system, a service availability calculation formula is used to obtain a constellation state probability; a constellation state probability calculation formula is used to obtain the availability of a single-satellite signal; according to the availability and service continuity of the single-satellite signal, a condition probability of visible satellite interruption is obtained; the continuity of the single-satellite signal is obtained; average interval time of short-time non-planed interruption is obtained; according to faultless missed probability and out-of-tolerance missed alarm probability of a spatial signal and the risk of service completeness, a completeness risk of the single-satellite signal is obtained, and further, average interval time of interruption caused by a soft fault and average interval time of interruption caused by a hard fault are obtained; average recovery time of short-time non-planned interruption is obtained; and according to the average interval time and average recovery time of short-time non-planned interruption, interruption design of the satellite navigation system is carried out.

Description

technical field [0001] The invention belongs to the field of satellite navigation system reliability, and in particular relates to a method for allocating availability continuity integrity indicators of a satellite navigation system. Background technique [0002] Satellite navigation system is an important space infrastructure that directly provides users with all-weather, all-day and high-precision services. The core of building a highly reliable satellite navigation system is to achieve system service performance such as high-quality availability, continuity and integrity. Interruption is an important indicator that directly reflects the health status of satellite signals, which can provide reliability basis and guidance for system development and construction. [0003] my country's Beidou satellite navigation system has been put into operation, and the system's public service performance indicators have been announced to the world. Its space segment consists of three sat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S19/01
CPCG01S19/01
Inventor 李海生卿寿松郑恒龚佩佩杨卓鹏薛恩任立明栾家辉
Owner CHINA AEROSPACE STANDARDIZATION INST
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