发明名称 |
Methods and systems for enhancing accuracy of terrain aided navigation systems |
摘要 |
A navigation system is described which includes a navigation processor, an inertial navigation unit configured to provide a position solution to the navigation processor, and a digital elevation map. The described navigation system also includes a radar altimeter having a terrain correlation processor configured to receive map data from the digital elevation map and provide a position solution based on radar return data to the navigation processor. A map quality processor within the navigation system is configured to receive map data from the digital elevation map and provide a map quality factor to the navigation processor which weights the position solution from the terrain correlation processor according to the map quality factor and determines a position solution from the weighted terrain correlation processor position solution and the position solution from the inertial navigation unit.
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申请公布号 |
US7409293(B2) |
申请公布日期 |
2008.08.05 |
申请号 |
US20040860418 |
申请日期 |
2004.06.03 |
申请人 |
HONEYWELL INTERNATIONAL INC. |
发明人 |
HAGER JAMES R.;ALMSTED LARRY D. |
分类号 |
G01C21/00;G01C21/26;G01S13/00;G01S13/86;G01S13/88;G06F19/00 |
主分类号 |
G01C21/00 |
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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