实验数据的多途提取研究

Multipath Extraction of Experimental Data

讨论了多途时延估计方法—WRELAX应用于提取爆炸声信号的多途结构.理论上此方法是有效的,但由于发射信号的畸变使得时延估计变得困难,与此同时信道多途的复杂化也将降低其性能.本文首先对该方法进行计算机仿真并对2002年南中国海域实验数据进行多途结构分析,结果表明,当对爆炸声信号波形进行适当选取后,此方法是有效的并能得到一定精度的时延估计.

The application of the well-known multipath TDE method-WRELAX in processing the bombing signal is discussed in the paper. The method is robust theoretically, but the distortion of the emitted signal makes the task of TDE very difficult, and the complexity of the multipath degrades the performance. In order to know the quality of this method, computer simulations are conducted. The final results obtained on the South China Sea Experiment'2002 data set show that the method is basically feasible and could give a high accuracy if an appropriate transmitted signal is chosen.