Enhanced Wave Buoy Analogy Through Heading Adjustment Strategy Based on Restricted Isometry Property
The performance of Wave Buoy Analogy (WBA) can degrade significantly in specific sea states (e.g., head or following seas) due to non-uniformly distributed RAOs, leading to inaccurate estimations. Building on previous work, this study proposes an adaptive heading adjustment strategy. This strategy utilizes the Restricted Isometry Property (RIP) to pre-evaluate WBA performance and actively adjusts the ship's heading to an optimal angle. This mitigates response spectra measurement errors and performance degradation in specific sea states. Numerical simulations show the strategy significantly improves the accuracy and robustness of sea state estimation.
Apr 3, 2025
Restricted Isometry Property in Wave Buoy Analogy and Application to Multispectral Fusion🏆
Real-time sea state information is crucial for marine operations. Wave Buoy Analogy (WBA) uses ship motion responses to estimate the wave spectrum, providing a cost-effective, real-time method. However, this method is susceptible to the non-uniformly distributed Response Amplitude Operators (RAOs), leading to performance degradation in specific sea states. This study introduces the Restricted Isometry Property (RIP) to evaluate WBA performance. An RAO-driven assessment criterion is proposed to pre-determine the reliability of estimates. Based on this, a multispectral fusion algorithm is developed. This algorithm can effectively fuse multiple estimates from ships with different geometries and headings to generate a comprehensive, robust, and accurate fused result. Numerical experiments demonstrate the algorithm's effectiveness.
Nov 2, 2024