摘要
多波束测深系统中,相位检测法是实现超宽覆盖测量的关键技术之一。分析了分裂子阵相位检测法和多子阵检测法,并基于对子阵结构的分析,改进了多子阵检测法,给出了多子阵检测法输出信噪比的表达式,讨论了子阵结构对输出信噪比的影响,在理论分析基础上选择了三种子阵结构对海上试验数据进行了处理,验证了分析结果。处理结果表明,在优化参数基础上,多子阵检测法不但可实现多波束测深系统的超宽覆盖,而且可改善系统对海底的检测性能。
In a multi-beam bathymetry system, phase detection is a key for achieving super-wide coverage. This paper analyzes split-subarray phase detection and multi-subarray detection methods. The multi-subarrays detection method is improved based on analysis of the subarray configuration. Representation of multi-subarrays output signal-to-noise ratio is given, the influence of the subarray configuration on output signal-to-noise ratio discussed, and 3 subarray configurations are chosen to process the experimental data obtained at sea based on theoretical analysis. Validity of the results is tested by experiments. It has been shown that, with optimized parameters, the multi-subarrays detection method not only realizes the super-wide coverage, but also improves the detection performance.
出处
《声学技术》
EI
CSCD
北大核心
2005年第3期152-156,共5页
Technical Acoustics
基金
国防水声技术国家重点实验室基金(51445030205ZS2301)
中国博士后科学基金(LRB00025)
关键词
多波束
分裂子阵相位检测法
多子阵检测法
信噪比
multi-beam
split-subarray detection
multi-subarrays detection
signal-to-noise ratio
