发明名称 |
SOFTWARE GLOBAL NAVIGATION SATELLITE SYSTEMS RECEIVER FOR HIGH-ALTITUDE SPACECRAFT APPLICATIONS |
摘要 |
A system that provides GPS-based navigation/orbit determination capabilities for high-altitude spacecraft. The system uses an existing spacecraft processor and an easy-to-space-qualify minimum-hardware front end to minimize the need for new space-qualified hardware. The system also uses coherent integration to acquire and track the very weak GPS signals at high altitudes. The system also uses diurnal thermal modeling of a spacecraft clock and precision orbit propagation to enable longer coherent integration, a special Kalman filter to allow weak signal tracking by integrated operation of orbit determination and GPS signal tracking, and a segment-by-segment, post-processing, delayed-time approach to allow a low-speed spacecraft processor to provide the software GPS capability. |
申请公布号 |
EP2558885(A1) |
申请公布日期 |
2013.02.20 |
申请号 |
EP20110711714 |
申请日期 |
2011.03.14 |
申请人 |
THE BOEING COMPANY |
发明人 |
LI, RONGSHENG;GHASSEMI, KAMRAN;KELLEY, CLIFFORD, W. |
分类号 |
G01S19/14;G01S19/23;G01S19/24;G01S19/46 |
主分类号 |
G01S19/14 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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