Multichannel receiver system for angularly resolved laser ranging measurement
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United States of America Patent
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Apr 27, 2004
Grant Date -
Jul 17, 2003
app pub date -
Dec 30, 2002
filing date -
Jan 8, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention relates to a multichannel receiver system (1) for angularly resolved laser ranging measurement, in which a laser light pulse from a laser (7) using the pulse travel time method is used to measure the ranges of a plurality of target points (6) by means of an array (2) comprising a plurality of apertures (3), of a photodetector (9) and of an evaluation circuit (10). The laser light pulses entering each of the apertures (3) and reflected by the target points (6) are distributed in a preselected distribution ratio between at least two optical fibers (511 to 543) with an individual length which corresponds to a light travel time t.sub.n,m, and are subsequently received by the photodetector (9) and are processed in the evaluation circuit (10). A unique assignment of the pulses to the respective apertures (3) is rendered possible by their spacings, specified in accordance with the distribution, and amplitudes. The ranges of the target points (6) can thereby be determined.
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