利用时域散射场进行目标方位探测研究

Study of target orientation identification using scattering field in time domain

为充分地开发电磁场时域响应数据中潜在的大量有用信息,提出一种新颖的仿真算法,将阵列信号处理技术应用到对电磁场时域响应的后处理中,可以确定目标的方位和距离,以及探测浸没在某种背景下的目标。通过时域有限差分法(FDTD)与MUSIC方法相结合,实现了具体的数值模拟,从而证明利用阵列信号处理技术能够从电磁场时域响应当中获得潜在信息,同时两者结合可以构成更为完善的数值模拟。

In order to exploit abundant potential information in the electromagnetic time domain response, the paper presented a novel method that puts the array signal processing into the application of post-processing of the time domain response. As a result, the orientation of target could be determined and the target immersed in some background material also could be found. By combining finite-difference time-domain （FDTD） method and MUSIC algorithm, the realized numerical simulations indicate that array signal processing technique can acquire more information from time domain response. And meanwhile, the combination produces a relatively complete numerical simulation.