水下主动电场面形阵列布置及成像方法研究

Research on Array Layout and Imaging Method of Underwater Active Electric Field Detection

摘要:

随着人们对海洋资源的不断开发，水下探测技术的所需要求越来越高，为了综合解决水下黑暗复杂环境快速探测成像需求及装置安装便捷性问题，对一种水下主动电场探测阵列布置及其成像方法进行了研究。主要依据水下主动电场定位探测原理，仿照弱电鱼探测活动进行阵列布置，通过搭载发射电极与接收电极阵列模仿弱电鱼电场发射器官与电场接收器官实现目标探测。使用 FFT 处理信号得到各接收电极的幅值， 通过差分得到水下阵列接收信号的强度变化，再运用插值算法画出阵列强度图从而对目标物体进行二维成像。 实验对不同形状的金属物体进行探测并成像，验证了方法的可行性与有效性。

关键词:弱电鱼;水下主动电场;阵列布置;成像方法

Abstract:

With the continuous development of marine resources，the requirement for underwater detection technology is getting higher and higher. In order to meet the need of rapid detection and imaging，and solve the problem of installation convenience in underwater dark and complex environment，a kind of underwater active electric field detection array layout and its imaging method are studied. Based on the underwater active electric field positioning and detection principle，the array design mimics the detection activities of weak current fish，and the target detection is realized by carrying the transmitting electrode and receiving electrode array to mimic the EODS and electric field receiving organs of weak current fish. The amplitude of each receiving electrode is obtained by FFT algorithm，and the intensity change of the received signal of underwater array is obtained by difference. Then，the intensity map of the array is drawn by interpolation algorithm to image the target object. Experiments on detecting and imaging metal objects with different shapes verify the feasibility and effectiveness of the method.

Key words:weak electric fish;underwater active electric field;array arrangement;imaging method