Spacecraft docking sensor system

Details Spacecraft docking sensor system Spacecraft docking sensor system

1993-04-09

1994-08-02

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Photocell controls its own optical systems

250557, 3561412, G01N 2186

Patent

active

053348486

ABSTRACT:
Apparatus, and a corresponding method for its use, for producing an enhanced image of a reflective target on a remote object, such as a space vehicle with which docking maneuvers are being carried out. Radiation at two separate wavelengths illuminates the target, and reflected radiation is separated by wavelength to produce two images simultaneously. Because the target is responsive to only one of the wavelengths, but reflections from other objects are received for both wavelengths, subtraction of the two images substantially removes unwanted image components resulting from reflections from objects other than the target. Producing the two images simultaneously, using two cameras, ensures that the unwanted image components are substantially the same in the two images, and can therefore be removed by subtraction during image processing.

REFERENCES:
patent: 4600305 (1986-07-01), Priddy
patent: 4603975 (1986-08-01), Cinzori

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