SeaBeam全海深多波束测深系统及应用

为更好地发挥SeaBeam深水多波束系统在深远海海洋调查中获取高精度地形地貌数据的作用、方便广大调查和研究人员使用,本文以SeaBeam3012多波束为例,较系统地分析介绍了其测量技术原理。开展了该系统的硬件组成、设备功能和技术特点等方面的介绍,从声学和信号处理等角度对其Swept Beam技术进行分析,并以“向阳红01”船某次调查任务为例,验证了该系统在深远海海洋调查中的应用效果。实例结果表明:SeaBeam3012系统可获得宽条带、高精度测量结果,性能更优于传统的分扇区扫描发射方式的多波束系统;SeaBeam3012系统采用Swept Beam技术实现了全水深范围内实时精确补偿船体横摇、纵摇和艏摇,使得测深条带在海底几乎平行排列;同时SeaBeam3012系统也极大地利用了低频带宽资源,提高了测深分辨率。

SeaBeam Full Depth Multi beam Echo sounder System and Its Application

To make the SeaBeam3012 multi-beam echo-sounder system play a better role in the deep sea and obtain precise topographic and geomorphologic data,the hardware compositions,equipment functions and technical features of the system are introduced,and the“Swept Beam”technology of the system is analyzed from the aspects of acoustics and signal processing.Through the surveys by using research vessel“Xiang Yang Hong 01”,the application effects of the system in the deep ocean investigation have been verified.The practice results have showed that the SeaBeam 3012 system can obtain wide swaths and highly precise results and has the performances much better than those of the traditional multi-beam system which uses a sector scanning method.With the application of“Swept Beam”technology,the SeaBeam3012 system can compensate the roll,pitch and yaw of the vessel in real time and precisely in the range of full water depth,making the bathymetric swaths arrange nearly parallel on the seafloor.In addition,the SeaBeam3012 system uses to the most extent the low-frequency band resource,thus improving the bathymetric resolution.