航天飞行器外弹道测量数据是分析和评估飞行器飞行实验是否成功的重要依据，也是改进飞行器控制系统设计、提高制导精度的重要依据。飞行器外弹道特征点测量数据处理的目的是通过处理雷达对航天飞行器开舱、级间分离、姿态改变等特征点的测量数据，计算出测量数据精确的突变（奇异）点时刻。由信号小波变换的奇异点在多尺度上的综合表现来表示信号是小波变换引人注意的另一应用领域。小波分析具有空间局部化性质，利用小波分析来分析信号的奇异性及奇异性的位置和奇异度的大小是比较有效的。

The measured data of space trajectory is the foundation of analysis and evaluation of whether experiment is successful.It is also the base to improve the design and precision.The aim of processing the data of trajectory characteristic spots measured data of spacecraft is to calculate the precise break(singularity) spot time by processing the measured data of the characteristic spot time of openning cabin,stage separating,aspect changing etc.It is an attractive application field for wavelet transform because the signal is expressed by the comprehensive behavior of wavelet transform of singularity spot in multi-dimensional space.Wavelet analysis has space localization property.It is very effective to analyze the signal singularity and singularity location and scale by wavelet analysis.

TN957