Title:
METHOD FOR PROCESSING SATELLITE POSITION VELOCITY DATA BASED ON SATELLITE EARTH STATION
Document Type and Number:
WIPO Patent Application WO/2020/186536
Kind Code:
A1
Abstract:
Disclosed is a method for processing satellite position velocity data based on a satellite earth station, comprising the following steps: S1) obtaining satellite GNSS data at a certain moment; S2) obtaining ephemeris data, and calculating the position velocity of a satellite at the moment; S3) calculating a position velocity deviation value of the calculated position velocity and the position velocity measured by the GNSS under a geometric inertial coordinate system; S4), training based on a neural network, and constructing a mapping relationship of "satellite position velocity-position velocity deviation value"; S5) compensating for the ephemeris-calculated position velocity of the satellite with the position velocity deviation value output by the neural network in regions that the mapping relation relationship is already constructed; and S6) converting the output position velocity deviation value to a geometric fixed coordinate system with the geometric inertial coordinate system. According to the present invention, precise position and velocity data of the satellite can be obtained. In addition, when beacon signals or received signals are absent, a Doppler shift value is estimated in real time, so that Doppler shift of uplink signals is compensated in real time.
Inventors:
XU YOUCHENG (CN)
Application Number:
PCT/CN2019/079305
Publication Date:
September 24, 2020
Filing Date:
March 22, 2019
Export Citation:
Assignee:
SHANGHAI ADVANCED AVIONICS CO LTD (CN)
International Classes:
G01S19/42
Foreign References:
| CN108259079A | 2018-07-06 | |||
| CN107682053A | 2018-02-09 | |||
| CN109145434A | 2019-01-04 | |||
| US20140184442A1 | 2014-07-03 |
Attorney, Agent or Firm:
SHANGHAI KELV PATENT AGENCY., LLP (CN)
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