基于声学原理的卵石运动实时追踪研究

Gravel movement real-time tracking based on underwater acoustic principle

针对常用的卵石运动观测技术在时效性与时空同步性等方面存在的不足,结合当前追踪技术,提出一种实时定位的卵石运动观测方法。基于声波在水中传播的独特优势,采用水声信号对水下目标进行实时追踪。由安装有声波发射器的卵石以及近水面布置的多个声波接收器构成卵石运动实时追踪系统,根据冗余观测数据的最小二乘解推求卵石位置,以实现卵石运动实时追踪。经过初期现场测试,验证了追踪模型以及算法的有效性。

There are some defects in timeliness and temporal synchronization of gravel movement observation technology. It is necessary to study a new method for gravel motion observation in real time, according to the current gravel tracking technology. Based on the unique advantages of acoustic signal propagation in water, acoustic technology has been extended to real-time tracking of underwater targets. The real-time tracking system is composed of several gravels which are inlaid with acoustic transmitters and a plurality of acoustic receivers arranging near the water surface. According to the least square solutions for redundant data, real-time tracking of gravel movement is realized. Validity of the tracking model and algorithm are verified initially by field tests.