Optics: measuring and testing – Range or remote distance finding – With photodetection
Reexamination Certificate
2006-08-22
2006-08-22
Gregory, Bernarr E. (Department: 3662)
Optics: measuring and testing
Range or remote distance finding
With photodetection
C356S141100
Reexamination Certificate
active
07095488
ABSTRACT:
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.
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Publication from Optech Website dated Oct. 8, 2002, entitled Laser-Based Ranging, Mapping and Detection System (11 pgs.).
S.C. Cohen, “Geodynamics Laser Ranging System: Performance Simulations and Development of The EOS Facility” Proceedings of IGARSS '88 Symposium Aug. 13-Aug. 16, 1988.
Jamieson James R.
Pesik Joseph T.
Ray Mark D.
Andrea Brian
Calfee Halter & Griswold LLP
Gregory Bernarr E.
Rashid, Esq. James M.
Rosemount Aerospace Inc.
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