The recycling of marine exploration equipment after it has surfaced is greatly affected by sea state. In order to estimate the sea state in real time, this paper proposes a method for measuring wave elevation, which modifies the integrated results of GNSS/SINS in the up direction by virtual horizontal lines to extract wave fluctuation information. From these wave information, the significant wave heights (SWH) can be calculated as the only input parameter of P-M spectrum, and a series of wave height data can be further simulated. When the GNSS is interrupted due to severe sea state, the simulated data can be integrated with the SINS to deal with the data distortion problem. The simulation results show that the application of wave spectrum in the GNSS intermittent situation has obvious improvement effect and important significance.

中文翻译：

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一种估算海面回收工作海况的新方法

海洋勘探设备浮出水面后的回收利用受到海况的极大影响。为了实时估计海况，提出了一种测量海浪高程的方法，该方法利用虚拟水平线修改GNSS / SINS向上方向的积分结果，以提取海浪波动信息。根据这些波信息，可以将有效波高（SWH）计算为PM谱的唯一输入参数，并且可以进一步模拟一系列波高数据。当GNSS由于恶劣的海况而中断时，可以将模拟数据与SINS集成在一起以解决数据失真问题。仿真结果表明，波谱在GNSS间歇性情况下的应用具有明显的改善效果和重要意义。