Title :
Autonomous precision orbit control of ALOS-2 for repeat-pass SAR interferometry
Author :
Yamamoto, Takayuki ; Kawano, Isao ; Iwata, Takayoshi ; Arikawa, Yoshihisa ; Itoh, Hayato ; Yamamoto, Manabu ; Nakajima, Kensuke
Author_Institution :
Japan Aerosp. Exploration Agency, Tsukuba, Japan
Abstract :
ALOS-2, the next-generation Japanese SAR satellite, is designed to perform autonomous precise orbit control of Earth-referenced repeating orbits for effective repeat-pass SAR interferometry. The orbit control accuracy requirement of ALOS-2 is 500m (95%) with respect to the reference Earth-fixed flight path. This accuracy is guaranteed for all latitudes by not only drag-makeup maneuvers but also frequent inclination maneuvers. The on-board software of ALOS-2 can handle operations of orbit determination, maneuver prediction and planning, and maneuver executions for both drag-makeup maneuvers and inclination maneuvers. This feature of autonomy is expected to be great help for efficient ground operations of ALOS-2.
Keywords :
artificial satellites; geophysical equipment; synthetic aperture radar; ALOS-2; Earth fixed flight path; Earth referenced repeating orbits; Japanese SAR satellite; autonomous precision orbit control; drag makeup maneuvers; inclination maneuvers; maneuver executions; maneuver planning; maneuver prediction; orbit determination; repeat pass SAR interferometry; Accuracy; Interferometry; Orbits; Planning; Satellites; Synthetic aperture radar; Vectors;
Conference_Titel :
Synthetic Aperture Radar (APSAR), 2013 Asia-Pacific Conference on
Conference_Location :
Tsukuba
