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车载跟瞄设备对低轨卫星进行测量时,常采用轨道预报获得卫星理论运行轨迹,光测设备以预报值作为引导值,搜索目标进行跟踪.跟踪过程中,由于云雾遮蔽或地影的影响,会使光测设备丢失目标.这时可采用理论引导的方式,利用预报轨道继续搜索跟踪.但由于轨道预报的误差较大,且目标过境时间有限,因此这种方法存在一定的缺陷.探讨利用修正目标跟踪脱靶量以及光测设备轴系误差后的实时跟踪值作为已知条件,采用改进的拉普拉斯方法对目标位置进行实时预测,解决上述问题.通过实时预测误差与轨道误差的比较,证明该方法的有效性.
When aiming at low-orbit satellites, the on-board aiming and sighting device usually uses orbit prediction to obtain the orbit of the satellite theory, and the optical measurement equipment uses the forecast value as the guide value to search the target for tracking. In the tracking process, due to the influence of the cloud cover or the shadow, Will make the optical measuring equipment lose the target .At the moment, the method of theoretical guidance can be used to continue the search and tracking by using the forecast orbit, but this method has some defects due to the large error of the orbit forecast and the limited target transit time. The correction target tracking miss distance as well as the optical tracking device real-time tracking value after the axial error as the known conditions, the use of improved Laplacian real-time prediction of the target position to solve the above problems.Compared with real-time prediction error and orbit error , To prove the effectiveness of the method.