基于目标探测的侧扫声呐拖鱼速度控制方法研究

Research on the Control Method of the Side Scan Sonar Towfish Survey Speed Based on the Feature Detection

随着侧扫声呐技术的广泛应用和人们对水下目标物精确探测的迫切需求,传统的侧扫声呐技术设计已不能满足对水下目标物快速、精确探测的要求,而侧扫声呐拖鱼速度控制作为海区技术设计的重要内容,其设计方法相对滞后。基于这一现状,本文从侧扫声呐系统分辨率分布的特点出发,构建满足全覆盖测量的拖鱼测量速度控制模型和满足目标探测的拖鱼测量速度控制模型,提出基于目标探测的侧扫声呐拖鱼速度控制方法,并通过算例对不同工况下的拖鱼推荐速度提出建议。数值计算表明:综合考虑全覆盖和目标探测能力两方面探测要求,只要侧扫声呐拖鱼尽量贴近海底,满足全覆盖的探测要求占主导作用,即拖鱼速度控制在4~6 kn范围内。

With the wide application of the side scan sonar and urgent need for the underwater feature detection, traditional side scan sonar technical design is no longer able to meet the demand of high-speed and accurate feature detection. As an important link in technical design, the side scan sonar towfish survey speed has not been fully developed in China. Based on this situation, according to the requirement of the feature detection, the side scan sonar towfish survey speed control model based on the full coverage and based on the feature detection are constructed, and the side scan sonar towfish survey speed control method based on the feature detection is put forward, and several suggestions on towfish survey speed are discussed at last. The results from the numerical calculation indicate the demand of full coverage plays the main role, which satisfied the side scan sonar towfish close to the bottom of the sea, the towfish speed is controlled in 4—6 kn.