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针对机载对地观测载机长时间匀速直线飞行时分布式位置姿态测量系统(POS)姿态误差随时间积累的问题,基于载机有效机动能够提高分布式POS系统可观测度进而提高系统估计精度的思想,设计并对比多种机动方式下分布式POS系统的估计精度,并对机动后分布式POS系统进入测区前的滤波估计稳定时间、直线飞行成像时长和全球定位系统(GPS)基线长度进行了测试。仿真结果表明,设计的飞行轨迹能够提高成像段运动参数的测量精度,可为机载对地观测最优飞行轨迹的选择和设计提供理论指导。
Aiming at the problem that the distributed position and attitude measurement system (POS) attitude error accumulates over time when the longitude and straight-line flight of the aircraft on the ground observing long-time straight-line aircraft is flying, the observable degree of the distributed POS system can be increased based on the effective maneuver of the aircraft, , This paper designs and compares the estimation accuracy of distributed POS system under various maneuvering modes, and also analyzes the stability of filter estimation stability, linear flight imaging time and global positioning system (GPS) baseline length before maneuvering distributed POS system taking the test. The simulation results show that the designed flight path can improve the measurement accuracy of the motion parameters of the imaging section and provide theoretical guidance for the selection and design of the optimal flight path of the on-board observation.