Method of adjusting an optical axis of receiving module of laser rangefinder to the main axis of space vehicle

摘要

A new method of adjusting an optical axis of the lens of receiving module (RM) of laser rangefinder (LRF) [1] to the main axis of space vehicle is described. The testing unit for LRF was designed and described [2]. The unit allows to measure the focal plane position of main lens, RM detectivity, level of nonaxis source of light, transmittance of optical system and dynamic range of RM and to make the most of adjustings. The uncertainty of adjusting four laser beams to the main axis of space vehicle consists of uncertainty of adjusting the optical axis of RM to the main axis of space vehicle, uncertainty of adjusting central fiber of fiber-optic coupler (FOC) RM to the optical axis and uncertainty of adjusting laser beams of laser transmitter module (LTM) to all of four fibers of FOC RM. The method and uncertainty of adjusting an optical axis of RM to main axis of space vehicle is determined as ±45 arcsec and described in this paper.