The principal of wavelet denoising is introduced and the replicability of GPS multipath effect in dynamic environment is discussed firstly.

介绍了小波滤波去理并讨论在动态环境下GPS多路径效应重复性问。

OFDM (Orthogonal Frequency Division Multiplexing) is a method that can combat multipaths, fully use the frequency band and has high data rate, and has a promising future in UWA communication.

摘要正交频复用(OFDM)技术具有抗多径、频带利用充、数据率高优点，在水声通信中具有重要发展前景。