论文标题
使用波场的稳定组件在多径环境中进行横梁成形
Beamforming in multipath environment using the stable components of wave field
论文作者
论文摘要
本文将基于代表天线的场的声波指导中的光束形成过程描述为由光线狭窄梁形成的几种稳定组件的叠加[A.L. Virovlyansky，J。Acoust。 Soc。是。 $ {\ bf 141} $，1180-1189（2017）]。基于比较天线上的测量和计算的场到比较其稳定组件的过渡，提出了对匹配的现场处理方法的修改。修改后的方法对环境模型的不可避免的不准确性变得不太敏感。在脉冲源的情况下，稳定的组件带有信号，其到达时间可以作为解决反问题的输入参数。稳定组件用作发射天线孔径上的初始场，使沿给定的射线路径传播的狭窄连续波梁可以激发狭窄的连续波梁。
The paper describes the beamforming procedures in an acoustic waveguide based on representing the field on the antenna as a superposition of several stable components formed by narrow beams of rays [A.L. Virovlyansky, J. Acoust. Soc. Am. ${\bf 141}$, 1180-1189 (2017)]. A modification of the matched field processing method is proposed, based on the transition from comparing the measured and calculated fields on the antenna to comparing their stable components. The modified approach becomes less sensitive to the inevitable inaccuracies of the environmental model. In the case of a pulsed source, the stable components carry signals whose arrival times can be taken as input parameters in solving the inverse problems. The use of the stable components as the initial fields on the aperture of the emitting antenna makes it possible to excite narrow continuous wave beams propagating along given ray paths.
