Satellite borne obscuration receiver quick positioning method based on satellite platform system

Abstract

Provided is a satellite borne obscuration receiver quick positioning method based on a satellite platform system. A GPS receiver receives a signal of a GPS satellite constellation, processes the signal to obtain GPS ephemeris information, time information, satellite position information and GPS constellation distribution forecast information; the GPS receiver receives an auxiliary information poll instruction sent out by a satellite service dispatching unit and outputs the obtained GPS ephemeris information, time information, satellite position information and GPS constellation distribution forecast information to a first-level CAN bus of a network on a satellite; the satellite service dispatching unit outputs the GPS ephemeris information, time information, satellite position information and GPS constellation distribution forecast information to a second-level CAN bus of the network on the satellite; a satellite borne obscuration receiver receives the GPS ephemeris information, time information, satellite position information and GPS constellation distribution forecast information obtained from the second-level CAN bus of the network on the satellite and first verifies the information, and if the information is effective, then quick locating is achieved through the information. According to the satellite borne obscuration receiver quick positioning method based on the satellite platform system, the locating time for the first time in starting and work of a specified arc section of the obscuration receiver is reduced, and the availability ratio of obscuration observation data is improved.

Description

technical field [0001] The invention relates to a method for assisting a fast positioning of a satellite-borne occultation receiver, in particular to a method for assisting a fast positioning of a satellite-borne occultation receiver based on a satellite platform system. Background technique [0002] At present, the occultation receivers operating in orbit are all powered on for a long time. For some special applications, the occultation receiver needs to be turned on for a short time in a specific arc of the satellite orbit circle to measure the occultation event. Under this working condition, the start-up time of the occultation receiver is very short, generally around tens of minutes. Therefore, the time required for the first positioning of the occultation receiver from power-on to normal positioning work directly affects the availability of occultation event observation data. [0003] Problems existing in traditional occultation receivers: cold start using the traditi...

AI Technical Summary

Problems solved by technology

Therefore, the time required for the first positioning of the occultation receiver from power-on to normal positioning work directly affects the availability of occultation event observation data

[0003] Problems existing in traditional occultation receivers: cold start using the traditional method of searching for GPS satellites takes a long time to capture and track GPS satellite signals, resulting in a long time for the first positioning, resulting in the observation data of occultation events in the start-up arc low availability

Images