Orbital Maintenance for the Wide Field Infrared Survey Telescope: The Effects of Solar Radiation Pressure and Navigation Accuracies on Station Keeping

Farres, Ariadna ; Webster, Cassandra ; Donaldson, Jennifer ; Folta, Dave

关键词: ORBIT DETERMINATION;    ORBITS;    WIDE-FIELD INFRARED SURVEY TELESCOPE (WFIRST);    SOLAR RADIATION PRESSURE;    NAVIGATION;    STATIONKEEPING;    POSITION ERRORS;    MATHEMATICAL MODELS;    ORBITAL VELOCITY;    LOADING MOMENTS;    VELOCITY ERRORS;    SPACECRAFT TRAJECTORIES;   

RP-ID  :  AAS 18-434,GSFC-E-DAA-TN59701

学科分类：航空航天科学

美国|英语

来源: NASA Technical Reports Server

【 摘 要 】

The Wide-Field Infrared Survey Telescope (WFIRST), a NASA observatory designed to investigate dark energy and astrophysics, is planned for a launch in 2025 to orbit the Sun-Earth L2 (SEL2) Libration Point. Due to the instability of the SEL2 environment, WFIRST must perform maneuvers to remain in its mission orbit. This paper investigates how different error sources affect the resulting stationkeeping delta v for WFIRST. We study how Solar Radiation Pressure (SRP) modeling affects WFIRST's orbital motion and stability, and how SRP combined with Orbit Determination (OD) errors drive the stationkeeping maneuver magnitudes. Our goal is to determine the best way to model WFIRST's SRP so that we minimize its impact on total stationkeeping delta v required over the mission lifetime.