小波变换在火箭遥测数据误码剔除中的应用

Application of Wavelet Transform in Eliminating Error of Rocket Telemetry Data

利用MATLAB仿真,对两段具有代表性的火箭飞行遥测数据进行了小波变换。通过分析不同小波基、分解层数和阈值规则下的处理效果,研究利用小波变换剔除火箭遥测数据误码的可行性。结果表明:对于同一表现形式的遥测数据,只要选择合适的小波基和分解层数,利用小波交换可有效剔除数据中所含误码。

Using MATLAB simulation, we did wavelet transform to the two segment of the representative rocket telemetry data. By comparing the effects that using the different wavelet base, decomposition level and threshold rule, we studied whether the method of using wavelet transform to eliminate the error of rocket telemetry data is feasible. The results show that for the same form of telemetry data, if use the appropriate wavelet base and decomposition level, using wavelet transform can effectively eliminate the error in the data.