| 摘要 |
<p>A method for determining the line of sight of an electro-optical device (10) mounted in a spacecraft such as a satellite. The electro-optical device (10) includes an electro-optical element (18) that detects impinging light energy and produces electrical pulses corresponding to the light energy detected. The method involves providing the electro-optical device (10) with a scan mirror (12) which is rotated to scan space to detect light produced by a suitable bright star. Once detected, the scan mirror (12) selectively directs the light produced by the detected star toward the electro-optical element (18) which produces electrical pulses in response to the light. A computer on-board the spacecraft then compares the electrical pulses outputted by the electro-optical device to a predetermined output expected for the star, to determine the line of sight of the electro-optical device.</p> |
