基于导频序列的火箭橇试验遥测抗多径信道编码方法

Anti Multipath Design Based on Pilot Sequence Channel Coding of Rocket Sled Telemetry

针对火箭橇试验过程中,遥测接收端解调时因受到多径效应影响,会产生较大误码率的问题,提出了基于导频序列的火箭橇试验遥测抗多径信道编码方法。该方法根据火箭橇试验速度以及信号传输速率等数据,通过选择合适的特殊字序列,采用已知信道特性的MSE均衡算法,设计信道估计数据结构和信道均衡数据帧结构。理论数据计算表明,该方法可以有效地提高数据质量,降低数据误码率。

In the process of rocket sled test,due to the influence of multipath effect on the demodulation of telemetry receiver,there would be a large bit error rate.A method of anti multipath channel coding for rocket sled test telemetry based on pilot sequence was proposed.According to the data of rocket sled test speed and signal transmission rate,this method designed the channel estimation data structure and channel equalization data frame structure by selecting appropriate special word sequence and using MSE equalization algorithm with known channel characteristics.Theoretical data calculation showed that this method could effectively improve data quality and reduce data error rate.