机载海洋波谱仪的浅海波浪参数反演

Inversion of shallow ocean wave parameters from airborne ocean wave spectrometer

基于机载海洋波谱仪挂飞试验获得的实测数据,研究了波谱仪的信号处理和波浪参数反演算法。首先,采用海浪谱反演算法对挂飞试验获得的波谱仪数据进行处理,成功得到了海洋波浪方向谱,并反演出了波浪相关参数;然后,利用浅海波浪模型Kadomtsev-Petviashivilli(KP)方程模拟了该海域的波浪传播,研究该海域波浪的传播特性。将波谱仪测量结果与模拟结果进行对比,结果基本一致,证明了波谱仪信号处理和波浪参数反演算法的有效性,同时也验证了波谱仪能较精确地测量海浪,为星载海洋波谱仪的研制奠定了良好的基础。

Based on ocean wave data obtained from the flight experiments of airborne ocean wave spectrometer principle prototype, signal processing and ocean wave parameter inversion algorithm are studied. The ocean wave directional spectrum and some ocean wave relevant parameters are got by data processing using ocean wave spectrum inverse algorithm. Then, to study the propagation characteristics of ocean wave in this sea area, ocean wave propagation is stimulated through shallow ocean wave model Kadomtsev Petviashivilli（KP） equation. The measurement results by the ocean wave spectrometer almost agree with the simulated result, show that the inverse algorithm is effective and the airborne ocean wave spectrometer can measure the ocean wave spectrum fair ly precise, which lays a good foundation for development of space-borne ocean wave spectrometer.