发明名称 |
System for profiling objects on terrain forward and below an aircraft utilizing a cross-track scanning laser altimeter |
摘要 |
A forward looking cross-track laser altimeter comprises: a first configuration of optical elements for guiding pulsed laser beams along a first optical path; a mirror element coupled to a scanner and disposed in the first optical path, the scanner operative to oscillate the mirror element to sweep the reflected laser beams back and forth across a line at a predetermined frequency; the scanner and mirror element configurable to reflect the pulsed laser beams along paths forward and downward at a predetermined angle to the flight path of the aircraft, wherein the pulsed laser beam paths are caused to be line swept across a ground track forward the aircraft; the mirror element for receiving returns of the pulsed laser beams from the terrain and objects on the terrain forward the aircraft and reflecting the returns along a second optical path to a light detector which produces a return signal in response thereto; a first circuit governed by the return signals for measuring times-of-flight of the returns and generating time-of-flight signals corresponding thereto; the scanner for generating a line sweep position signal; and a second circuit for generating for each return a data profile comprising range and line sweep position thereof based on the corresponding time-of-flight and position signals. <IMAGE> |
申请公布号 |
EP1441236(A1) |
申请公布日期 |
2004.07.28 |
申请号 |
EP20030257845 |
申请日期 |
2003.12.12 |
申请人 |
ROSEMOUNT AEROSPACE INC. |
发明人 |
JAMIESON, JAMES R.;RAY, MARK D.;PESIK, JOSEPH T. |
分类号 |
G01S7/481;G01S7/483;G01S7/499;G01S17/42;G01S17/89;G01S17/93 |
主分类号 |
G01S7/481 |
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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