Satellite position and satellite clock error recovering method and orbital clock error correction representing method

Abstract

The invention discloses a satellite position and satellite clock error recovering method and an orbital clock error correction representing method, and relates to the field of satellite navigation. The orbital clock error correction representing method comprises the steps of calculating satellite orbit and clock error information in real time by using observation information of a satellite globaltracking station and satellite precision orbit determination software, and calculating the coordinate position of a satellite in an earth-centered earth-fixed coordinate system and satellite clock error information in real time according to the satellite orbit and clock error information; performing a truncation operation on a satellite coordinate parameter and a satellite clock error parameter, taking a portion below the hundred's place of the satellite coordinate parameter as a satellite position correction, and taking a portion below the hundred's place of the satellite clock error parameter as a satellite clock error correction. The orbital clock error correction representing method significantly reduces the dependence on the navigation ephemeris compared with the original orbital clock error correction representing method and the precision satellite position and satellite clock error recovering method, and the navigation ephemeris of a client does not need to be strictly synchronous with the navigation ephemeris used by an orbital clock error correction broadcasting terminal.

Description

technical field [0001] The invention relates to the technical field of satellite navigation and positioning, in particular to a satellite position and satellite clock error recovery and orbit clock error correction number representation method. Background technique [0002] Existing orbit clock products generally broadcast the satellite orbit clock corrections based on the satellite-based coordinate system, that is, broadcast the three-dimensional coordinates of the precise satellite position in the satellite-based coordinate system centered on the navigation ephemeris satellite position. The satellite-based coordinate system takes the position of the navigation ephemeris satellite as the origin, and takes the radial, tangential and vertical trajectory directions as the coordinate axis directions to construct a three-dimensional space Cartesian coordinate system. When using the orbit clock correction number based on the satellite-based coordinate system to recover, it is nec...

AI Technical Summary

Problems solved by technology

Usually, due to network transmission delay or receiver navigation ephemeris update delay, etc., the navigation ephemeris of the user end and the update of the navigation ephemeris of the service broadcast end cannot be strictly synchronized, resulting in the orbital clock error correction number at the user end in some periods. Unusable issues due to mismatch

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