脉冲雷达的卫星发射主动段融合弹道精度评估

卫星发射任务时,脉冲雷达测量数据在主动段实时和事后数据融合处理中占有举足轻重的地位。目前,靶场实时和事后数据融合的主流算法是"UKF"和样条约束的EMBET算法,采用这两种方法把脉冲雷达与高精度测速雷达测量数据进行融合,研究和探讨中精度设备参加卫星测量任务数据融合的情况,并对融合弹道精度进行分析与评估。结果表明,实时与事后弹道解算精度能满足要求,特别在多测速弹道不满足精度要求时,加入脉冲雷达测量数据能显著提高弹道解算精度。

The Precision Evaluation on Satellite Fused Trajectory in Boost Phase Based on Impulse Radars

The measured data of impulse radars in boost phase plays a significant role in real-time and post-mission data-fusion.Current mainstream algorithms of data-fusion in the range are Spline-constrained EMBET and UKF,with which the measured data of impulse and continuous wave radars are fused,the instances of medium-precision equipments which take part in data-fusion of measurement on satellite are studied,and the precision of fused trajectory are analyzed and estimated.The results shows that the precision of fused trajectory could satisfied the demands and the addition of measurement data on impulse radars would remarkably improve the precision of fused trajectory when the trajectory of multi-velocity-measurement radars can’t satisfied the demands of precision.