
Reentry Trajectory Estimation for Irregular Target Based on Single Optics Measurement
PAN Ligui, YIN Jiaqi, XU Chunguang
JPRMG ›› 2022, Vol. 42 ›› Issue (5) : 78-83.
Reentry Trajectory Estimation for Irregular Target Based on Single Optics Measurement
For the irregularly shaped ballistic reentry target, based on a single optics measurement, the initial reentry surface of the ballistic target is proposed as the basic constraint. The intersection of the optical sight vector and the initial reentry surface is utilized as the target position sequence, and the target position sequence corresponding to the optical measurement data sequence is obtained. Then the ballistic estimation sequence is obtained by the midpoint smoothing method. Based on the comprehensive consideration of the initial reentry surface deviation and the optical measurement data error, the estimation method of the reentry ballistic error is given. According to the simulation experiment, the results show that the method solves the problem that the measurement data from a single optics measurement is not enough to constrain the target position. And it can effectively estimate the ballistic parameters and the landing point deviation.
ballistic flight target / reentry target / estimation method / optics measurement {{custom_keyword}} /
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