Synthetic aperture sonar movement compensation algorithm based on time-delay and phase estimation

• 来源期刊: 声学学报（英文版）
• 学科: 物理学
• 年，卷（期）: 2003,（3）
• 页码范围: 261-267
• 页数: 7页
• 分类号: O42
• 语种: 英文

摘要

The effects of movement errors on imaging results of synthetic aperture sonar andthe necessity of movement compensation are discussed. Based on analyzing so-called displacedphase center algorithm, an improved algorithm is proposed. In this method, the time delayis estimated firstly, then the phase is estimated for the residual error, so that the range ofmovement error suited to the algorithm is extended to some extent. Some simulation resultson computer and experimental results in the test tank using the proposed algorithm are givenas well.