Method for measuring deviation between digital sun sensor measuring coordinate system and prism coordinate system

数字式太阳敏感器测量坐标系与棱镜坐标系偏差测量方法

Abstract

一种数字式太阳敏感器测量坐标系与棱镜坐标系偏差测量方法,将数字式太阳敏感器安装到高精度三轴转台上,使用太阳模拟器模拟太阳光线矢量照射数字式太阳敏感器,使用一台经纬仪测量数字式太阳敏感器的棱镜坐标系Z轴相对于测量坐标系Z轴的偏差,同时使用两台经纬仪测量数字式太阳敏感器的棱镜坐标系X轴相对于测量坐标系X轴的偏差,以及数字式太阳敏感器的棱镜坐标系Y轴相对于测量坐标系Y轴的偏差。本发明通过光线测量的方式,将探测器滤光片的测量坐标系与棱镜坐标系关联起来,在地面完成坐标系关系测量,测量出来坐标系间的偏差可以直接提供整星装星使用,并提供给姿轨控系统直接进行在轨测量坐标系修正,可靠性高、可信度高、可实施性高。
The invention provides a method for measuring a deviation between a digital sun sensor measuring coordinate system and a prism coordinate system. The method includes installing a digital sun sensor on a high precision three-axle table, using a solar simulator for simulating solar ray vector to irradiate the digital sun sensor, using a theodolite for measuring the deviation of Z-axis in the prism coordinate system of the digital sun sensor relative to the Z-axis of the measuring coordinate system, and using two theodolites for measuring the deviation of X-axis in the prism coordinate system of the digital sun sensor relative to the X-axis of the measuring coordinate system and the deviation of Y-axis in the prism coordinate system of the digital sun sensor relative to the Y-axis of the measuring coordinate system. The measuring coordinate system of a detector optical filter and the prism coordinate system are connected by means of light measuring mode, and the measuring of the coordinate system relationship is completed on the ground. The measured deviation between the coordinate systems can be used for arranging and installing the satellite directly, and can be provided for the attitude and orbit control system to amend the inflight measuring coordinate system directly. The method has high reliability, high credibility, and high enforceability.

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