Invention Grant
US08228230B1 Satellite orbit prediction method, receiving apparatus and navigation satellite system employing the method
有权
卫星轨道预测方法,采用该方法的接收装置和导航卫星系统
- Patent Title: Satellite orbit prediction method, receiving apparatus and navigation satellite system employing the method
- Patent Title (中): 卫星轨道预测方法,采用该方法的接收装置和导航卫星系统
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Application No.: US12756048Application Date: 2010-04-07
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Publication No.: US08228230B1Publication Date: 2012-07-24
- Inventor: Piergiorgio Capozio
- Applicant: Piergiorgio Capozio
- Applicant Address: IT Agrate Brianza
- Assignee: STMicroelectronics S.r.l.
- Current Assignee: STMicroelectronics S.r.l.
- Current Assignee Address: IT Agrate Brianza
- Agency: Seed IP Law Group PLLC
- Main IPC: G01S19/27
- IPC: G01S19/27

Abstract:
A satellite orbit prediction method of a satellite navigation system includes storing satellite past ephemerides data associated with past time intervals and satellite recent ephemeris data associated with a recent time interval, and computing reference satellite positions based on the past and recent ephemerides data. The method also includes: computing estimated satellite positions by propagating on the past time intervals using a celestial mechanics force model and the recent ephemeris data, computing errors from the reference satellite positions and estimate satellite positions, and identifying a position error function by fitting a curve to the computed errors. The position error function is used to obtain corrected predicted satellite orbit portions.
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