06844924 is referenced by 15 patents and cites 4 patents.

A high range resolution ladar includes a chirp generator for producing a chirp signal waveform that is used by a laser diode to propagate a divergent laser light waveform. The reflected light signals from the target are directed to a self mixing detector that is coupled to the chirp generator where the responsivity of the detector varies in accordance with the chirp waveform for converting reflected light signals from the target to electrical signals and for mixing the converted electrical signal with the chirp waveform to produce an output electrical signal whose frequency is proportional to the range to the target. The self-mixing detector includes at least one detector having a semiconductor substrate and first and second electrodes deposited on the substrate and spaced from each other, wherein the first set of electrodes is connected to the chirp generator and the second set of electrodes is connected to a memory for storing a plurality of frames of image data.

Title
Ladar system for detecting objects
Application Number
10/183536
Publication Number
6844924 (B2)
Application Date
June 28, 2002
Publication Date
January 18, 2005
Inventor
Paul H Shen
North Potomac
MD, US
Barry L Stann
Edgewater
MD, US
William C Ruff
Baltimore
MD, US
Agent
William Randolph
Assignee
The United States of America represented by the Secretary of the Army
DC, US
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