High-resolution extended field-of-view tracking apparatus and me

Details High-resolution extended field-of-view tracking apparatus and me High-resolution extended field-of-view tracking apparatus and me

1993-02-17

1997-02-04

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Photocell controls its own optical systems

250234, 356121, G01B 1100

Patent

active

056001231

ABSTRACT:
An optical tracking system and method are disclosed. The optical tracking system includes a scanning mirror which scans and receives images within a field of view scannable by the mirror. An optical system receives images from the scanning mirror and directs the images upon a charge coupled device (CCD) camera. An Inertial Measurement Unit (IMU) beam serves as a fixed reference point from which the position of the scanning mirror is determined and is directed upon the CCD camera. A dispersive element provides and directs a pattern of light consisting of a grid of diffracted orders upon the CCD camera. The movement of the scanning mirror provides a corresponding movement of the diffracted orders. The position of the center of any diffracted order can be determined in relation to the IMU beam by centroiding. The position of the scanning mirror is determined by correlating the position of the diffracted orders to the position of the scanning mirror.

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