基于灰色聚类理论的非合作目标交会效能评估

Effectiveness Evaluation of Rendezvous with Space Non-Cooperative Target Based on Grey Clustering Theory

由于空间非合作目标航天器的特性不完全已知,将空间非合作目标视为灰色系统,利用灰色聚类理论评估交会效能。选择跟踪精度、预报精度、交会精度和交会窗口为评估指标,使用熵权法确定指标权重。考虑目标航天器变轨时刻和变轨加速度不同情况,分别仿真计算指标观测值,评估交会效能。仿真算例评估结果说明效能评估方法具有客观性和有效性。

Due to the uncertainty of space non-cooperative target, the target is regarded as a grey system, and the effectiveness evaluation of rendezvous is based on grey clustering theory. Tracking precision, predicting precision, rendezvous precision and rendezvous window are chosen as indicators, and their weights are decided by entropy. Considering different orbit transfer time and acceleration, the data of indicators are calculated respectively by simulation, and the effectiveness of rendezvous is evaluated with thegrey cluster method. Simulation result shows that effectiveness evaluation method is of objectivity and credibility.