发明名称 |
Combined laser altimeter and ground velocity measurement apparatus |
摘要 |
Combined laser-based apparatus for determining both altitude and ground velocity of an aircraft comprises: a laser source for emitting pulsed laser beams substantially at a predetermined wavelength; a plurality of first optical elements for directing the laser beams from a first optical path to a second optical path which exits the first optical elements; a plurality of second optical elements configured to form a telescope, the second optical path and telescope field of view being fixedly co-aligned; an optical scanner for directing the second optical path and telescope field of view to desired ground positions while maintaining the co-alignment thereof; the telescope for receiving Doppler wavelength shifted reflections of the pulsed laser beams and directing the received ground reflections substantially over a third optical path; an optical filter element for separating the ground reflections of the third optical path into first and second portions that are dependent on the Doppler wavelength shift of the ground reflections; and processing means for determining altitude and ground velocity of the aircraft based on the first and second portions.
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申请公布号 |
US7400386(B2) |
申请公布日期 |
2008.07.15 |
申请号 |
US20060443820 |
申请日期 |
2006.05.30 |
申请人 |
ROSEMOUNT AEROSPACE INC. |
发明人 |
JAMIESON JAMES R.;HALAMA GARY E.;MENEELY CLINTON T. |
分类号 |
G01P3/64;G01C3/20;G01C5/00;G01N21/00;G01P3/36;G01S7/42;G01S7/481;G01S17/50;G01S17/58;G01S17/87;G01S17/88;G01S17/93 |
主分类号 |
G01P3/64 |
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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