幅度-相位联合检测法在多波束测深系统中的应用

幅度蛳相位联合检测法是传统多波束测深系统海底检测法的发展方向,它充分利用了幅度和相位信息,能大大扩展测量范围,提高测量精度。文章对该方法的具体应用进行了研究,在确定信号粗略到达时间时采用了一种自动跟踪门方法,同时针对相位检测法实时处理数据运算量大的特点,提出了一种数据压缩与动态滑动平均相结合的数据预处理方法,该方法大大减小了运算量,其有效性通过方差分析进行了验证。数据处理结果表明,采用了自动跟踪门和数据预处理相结合的幅度蛳相位联合检测方法可明显扩展多波束测深系统的条带宽度。

Application of amplistude-phase detection in multi-beam bathymetric system

Amplitude-phase detection is an ideal choice in multi-beams system development for sea bottom detection, which makes full use of amplitude and phase information and can improve measurement accuracy. Intensive research has been conducted on how the method is used. An automatic gate tracing technique is proposed for rough arrival time estimation. In order to lessen heavy computation burden and meet the real time requirement processing sampled data, a pre-processing technique is adopted which combines data compression and dynamic averaging. In order to verify the validity of the pre-processing method, a variance analysis is included. The experimental results show that the automatic gate tracing and pre-processing can extend measurement width in multi-beam systems when combined with the amplitude-phase detection method.