海底回波 meaning in English
sea bottom echo
Examples
- A conc1usion can be drawn that these algorithms has better preci si on and fitting for the multi - - beam swath bathymeter system better on the condition of 1arge beam ang1e , and can improve the precision of edge beams in non - - specu1ar seabed region
证明bdi和分裂孔径相关法可以精确地对海底回波信号进行回波时延估计和方向估计，可提高非镜向海底区域的边缘波束的测量精度。 - In this paper , we use fft beam - - form technique to increase the number of beams and bearing deviation indicator ( bdi ) and sp1 it - - aperture corre1ation a1gorithms are used to estimate the time of arrival ( t0a ) and direction of arriva1 ( d0a )
本文在分析借鉴国外资料的基础上，研究了利用fft波束形成技术来增加波束形成数目，并应用bdi算法和分裂孔径相关法来完成对海底回波信号的时间和方向的联合估计等相关技术对海试数据进行处理。 - Real time seafloor tracking technique is the critical technique to ensure smooth seafloor surveying with full coverage and high efficiency . after detailed investigation on stochastic features of seabed reverberation produced by mbss systems , the author presented an algorithm and a set of relevant key coefficients for real time seafloor tracking , taking into account of characteristics of signal processing and timing sequence of the real system and introducing theorems of terrain surveying . as an achievement , a mathematical model was established based on the technique of centered filtering
海底地形实时跟踪技术是保证多波束测深系统实现高效率全覆盖水下地形测量的核心技术，作者通过对多波束测深系统海底回波信号统计特性的研究，依据地形测量理论，并结合实际系统信号处理的技术特点和处理时序，提出了实现海底跟踪控制的关键参数及计算方法，建立了基于中值滤波技术的海底地形实时跟踪数学模型，并开发出实时地形跟踪专家系统，该系统经多次海上实验验证表明：理论正确、方案可行，取得良好效果。