地球同步气象卫星星载高精度太阳敏感器的研制

摘要

Basing upon the requirements of the scanning synchronization controller system of the geo-stationary meteorology satellite (GSMS) and the characteristics of the solar target, a prototype of on-board high accuracy sun sensor (HASS) and a set of testing equipment of this HASS has been developed. The designed sun sensor, which is used on the GSMS both for the scanning synchronization controller and for the alignment guiding of cloud pictures at earth stations, has two pairs of slits and uses an equivalent detection method to generate a high accuracy sun pulse. It has realized a measuring accuracy of 0.46 microseconds (r.m.s) when the satellite rotates at a rate of 100 r/min in the sector meridian plane of the satellite ranging from -29.5° to +29.5°. In addition, the sensor has the characteristics of high reliability, real-time and low power consumption.%根据地球同步气象卫星(GSMS)星载扫描同步控制器系统的要求和对太阳目标特性的分析,研制了一台用于该GSMS的星载高精度太阳敏感器(HASS)及配套的性能测试装置.该太阳敏感器的光学头部由两对狭缝组成,采用平衡检测方式产生高精度的太阳脉冲,为星上扫描同步控制器和卫星地面站云图配准的引导提供基准信号.其在卫星子午面内的扇形视场为-29.5°～+29.5°,当其随星体按100r/min的速率旋转时,可实现0.46μs(r.m.s)的测量精度.另外,该太阳敏感器还具有高可靠性、实时性和低功耗的特点.