Optics: measuring and testing – Range or remote distance finding – With photodetection
Patent
1997-07-16
1999-02-02
Hellner, Mark
Optics: measuring and testing
Range or remote distance finding
With photodetection
382106, 701225, G01C 0308
Patent
active
058672567
ABSTRACT:
A range estimation system and method which comprises a data base containing data for identification of certain targets and data for estimating the initial range to each of the targets as a function of the observed dimensions of the targets. A sensor (1) observes a scene containing a target a plurality of spaced apart times while the sensor is moving relative to the target to provide data from each observation of the scene relating to the dimensions of the target within the scene. The remaining range to the target is estimated from the observed dimensions of the target from the range traveled since a prior estimation of range and from a prior estimation of the remaining range to the target. The sensor (1) provides electrical signals representing the observed scene (3) and can be a visible light or infrared sensor. A computer (9) is used to identify the target from the data base, estimate the initial range to the target and estimate the remaining range from the range traveled between successive observations of the scene and the change of dimensions of the target in the observed scene.
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Hellner Mark
Raytheon TI Systems Inc.
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