光学与光电技术, 2018, 16 (6): 33, 网络出版: 2018-12-17
一种机载光电平台下的目标被动定位方法
A Passive Target Location Algorithm Under Airborne Optoelectronic Platform
被动定位 航迹预测 误差椭圆 最小二乘 光电标校 passive positioning track prediction error ellipse least squares electro-optic calibration
摘要
针对目标被动定位过程中因外界干扰导致定位结果产生跳变,影响精度和稳定性的问题,提出了一种以目标航迹预测辅助目标定位的方法,对目标的历史定位结果建立航迹,以航迹预测结果结合误差椭圆对目标当前定位结果进行约束,剔除错误值,分别对固定目标和运动中的火车进行定位实验,斜距7 900 m情况下定位误差小于150 m。实验结果表明,该方法能够有效保证定位结果的精度和稳定性,能够满足实际使用要求。
Abstract
Aiming at the problem that the positioning result may jump, the accuracy and the stability may be affected during the process of passive target positioning due to external interference, a method of predicting the location of the auxiliary target with the track is proposed. Firstly, the track is formed according to the historical positioning results. Then the results are combined with the error ellipse to constrain the current location of the target so as to eliminate the error value. The positioning experimental results of fixed target and the moving train show that the location error is less than 150 m when the slant distance is 7 900 m. The results show that the method can effectively ensure the accuracy and stability of positioning results and it has a strong practical significance.
李伦平, 谭仁龙. 一种机载光电平台下的目标被动定位方法[J]. 光学与光电技术, 2018, 16(6): 33. LI Lun-ping, TAN Ren-long. A Passive Target Location Algorithm Under Airborne Optoelectronic Platform[J]. OPTICS & OPTOELECTRONIC TECHNOLOGY, 2018, 16(6): 33.