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

介绍了小波滤波去噪的原理并讨论在动态环境下GPS多路应的重性问。

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.

摘要正交频分(OFDM)术具有抗多、频带利充分、传输数据率高的优点，在水声通信中具有重要的发展前景。