TSIS Experiences with ISS Jitter from Inception to On-Orbit Operation
[摘要] The TSIS instrument has been measuring solar irradiance on a continual basis since January 2018 as an external payload on the ISS. In 2014 when TSIS was directed to fly on the ISS, the jitter environment was highly uncertain, so TSIS designed a robust gimbaled pointing system that showed excellent disturbance attenuation throughout the design, test, and on-orbit phases of the program. This paper discusses how TSIS accounted for this uncertain jitter environment through-out the life of the program.TSIS was able to measure the ISS jitter during commissioning and determined that it was a relatively benign environment less than 4 arcseconds 1σ at low frequencies (<0.5 Hz). More importantly, the measured pointing performance of TSIS was consistently found to be 4 arcseconds 1σ, which easily satisfied the jitter requirement of 60 arcseconds 1σ.
[发布日期] 2019-01-31 [发布机构]
[效力级别] [学科分类] 工程和技术（综合）
[关键词] CONTROLLERS;DESIGN ANALYSIS;IRRADIANCE;SATELLITE-BORNE INSTRUMENTS;SOLAR RADIATION;LOW FREQUENCIES;VIBRATION;AIRBORNE/SPACEBORNE COMPUTERS;INTERNATIONAL SPACE STATION;LIGHT (VISIBLE RADIATION);MECHANICAL DRIVES;POINTING CONTROL SYSTEMS;SOLAR ORBITS;SPECTRAL EMISSION [时效性]
