深水多波束测深声纳多条带探测模式研究与实现

Research and implementation of multi-ping survey mode of deepw ater multibeam echo sounder

多条带技术是当今主流多波束测深声纳(multibeam echo sounder,MBES)核心技术之一,可有效解决高航速探测作业海底覆盖不完善的问题。针对深水MBES工作特点,提出一种适用于深水MBES的多条带(条带数≥2)探测模式的实现方法。该方法通过控制发射时序与信号频率、采用多条带姿态稳定发射与接收算法,来实现深水MBES多条带探测模式。基于该方法在国产1°×1°全海深多波束测深系统上,实现了双条带(即条带数为2)探测模式并完成海试。试验结果表明,使用双条带探测模式可在12 kn航速下依旧获得较好的海底覆盖效果,并且测深精度能够满足国际海道测量组织(international hydrographic organization,IHO)特级标准和我国海道测量规范国家标准。由此表明,本文深水MBES多条带探测模式可有效提升深水MBES的探测效率和成图分辨率。

Multi-ping(or multi-swath)technology is one of the core technologies of mainstream multibeam echo sounder(MBES),which can effectively solve the problem of incomplete seabed coverage in high speed survey.According to the working characteristics of deepwater MBES,this paper proposes an implementation method of multi-ping(the number of swaths),which controlling the transmission timing and signal frequency,and using the attitude stabilization algorithm for multi-ping transmission and reception.Based on this method,a dual-ping(i.e.the number of swaths is 2)survey mode is realized in the domestic deepwater MBES with 1 degree by 1 degree,and the sea test is completed.The sea test results show that good seabed coverage effect can be obtained at 12 knots in dual-ping survey mode,and the bathymetric accuracy can meet the special order standards of the International Hydrographic Organization(IHO)and the national standards of hydrographic survey specifications.This shows that the multi-ping survey mode of deepwater MBES in this paper can effectively improve the survey efficiency and mapping resolution of deepwater MBES.