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Method for monitoring integrity of B-type ephemeris faults of locally enhanced GNSS satellite of dynamic-to-dynamic platform

A technology of integrity monitoring and moving platform, applied in satellite radio beacon positioning system, measurement device, radio wave measurement system and other directions, can solve the problem of inapplicability of satellite navigation system, etc., and achieve the effect of accurate position deviation

Pending Publication Date: 2020-08-07
HARBIN ENG UNIV
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Problems solved by technology

[0004] But this monitoring method is not applicable to all satellite navigation systems, such as the Beidou system

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  • Method for monitoring integrity of B-type ephemeris faults of locally enhanced GNSS satellite of dynamic-to-dynamic platform
  • Method for monitoring integrity of B-type ephemeris faults of locally enhanced GNSS satellite of dynamic-to-dynamic platform
  • Method for monitoring integrity of B-type ephemeris faults of locally enhanced GNSS satellite of dynamic-to-dynamic platform

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Embodiment Construction

[0046] The present invention will be further described below in conjunction with the accompanying drawings.

[0047] The method for monitoring the fault integrity of the GNSS satellite class B ephemeris fault integrity locally enhanced on the moving-to-moving platform includes the following steps:

[0048] Step 1, according to the historical ephemeris data, analyze the statistical distribution of the broadcast ephemeris parameter difference between adjacent updated ephemeris. From the statistical distribution of broadcast ephemeris parameter changes, the statistical distribution of satellite position deviation can be approximated.

[0049] Step 2, the statistical distribution of the broadcast ephemeris parameter difference obtained in the first step. The overall influence of each broadcast ephemeris parameter change on the satellite position is obtained, so as to obtain the sensitivity of the satellite position to different broadcast ephemeris parameters under the condition o...

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Abstract

The invention belongs to the field of satellite ephemeris fault monitoring of a global navigation satellite system, and particularly relates to a method for monitoring the integrity of B-type ephemeris faults of the local enhanced GNSS satellite of the dynamic-to-dynamic platform. According to the method for monitoring the integrity of the B-type ephemeris faults of the local enhanced GNSS satellite of the dynamic-to-dynamic platform, the autonomous monitoring of the B-type ephemeris faults is realized by using dual constraint conditions of a detection threshold and a required missing detection index. The present method of the invention comprises: based on historical ephemeris data, the statistical distribution of broadcast ephemeris parameter differences between adjacent updated ephemerisis analyzed; the statistical distribution of satellite position deviation is obtained from the statistical distribution of broadcast ephemeris parameter changes; the influence of each broadcast ephemeris parameter change on a satellite position is obtained according to the statistical distribution of the broadcast ephemeris parameter differences; the sensitivity of the satellite position to different broadcast ephemeris parameters under a fault-free condition is obtained. According to the method, the position of a satellite at the next moment can be more accurately predicted, so that positiondeviation is more accurate.

Description

technical field [0001] The invention belongs to the field of global navigation satellite system (Global Navigation Satellite System, GNSS) satellite ephemeris failure monitoring, and in particular relates to a method for monitoring the fault integrity of GNSS satellite class B ephemeris faults with a local enhanced GNSS satellite ephemeris of a moving-to-moving platform. Using the dual constraints of the detection threshold and the required missed detection index, a mobile-to-mobile platform local enhanced GNSS satellite Class B ephemeris fault integrity monitoring method for autonomous monitoring of Class B ephemeris faults is realized. Background technique [0002] Satellite ephemeris fault monitoring is of great significance in satellite navigation systems. In order to reduce the deviation between the satellite position predicted by the satellite ephemeris and the real position of the satellite, improve the positioning accuracy, and meet many navigation applications with ...

Claims

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Application Information

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IPC IPC(8): G01S19/20G01S19/08
CPCG01S19/20G01S19/08Y02D30/70
Inventor 李亮冯伟男程春王仁龙李南刘媛媛李慧赵琳
Owner HARBIN ENG UNIV