| Citation: | GONG Xiaolin, ZHANG Shuai. Design and comparative analysis of flight trajectory of airborne earth observation[J]. Journal of Beijing University of Aeronautics and Astronautics, 2017, 43(8): 1541-1549. doi: 10.13700/j.bh.1001-5965.2016.0580(in Chinese)
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Aimed at the problem of attitude errors of distributed position and orientation system (POS) accumulate over time when airborne earth observation aircraft moves along a straight line at a constant velocity, a variety of maneuver modes were designed. Not only the estimation accuracy of distributed POS was compared, but also the time of system reaching stability after maneuver and the time of straight flight in imaging segment and baseline length of global position system (GPS) were tested. The method was based on the concept that the effective maneuver can improve the observability of distributed POS. Simulation results show that the designed flight trajectory can improve the measurement accuracy of the imaging segment motion parameters and can provide theoretical guidance for the selection and design of optimal flight trajectory for airborne earth observation.
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