Probe pulse shape estimation in synthetic aperture method

IEEE Antennas and Propagation Society International Symposium. 1999 Digest. Held in conjunction with: USNC/URSI National Radio Science Meeting (Cat. No.99CH37010) Pub Date : 1999-07-11 DOI:10.1109/APS.1999.788303

V. Kovalenko

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引用次数: 1

Abstract

The synthetic aperture method (SAM) application to subsurface scanning data is discussed in the paper. SAM is known to be one of the most powerful techniques of electromagnetic sounding data processing. The advantages of SAM include the universality of its algorithm and the high resolution capability that it can produce. Images of non-dissipative and low-absorbing media can be efficiently treated with this technique. The applicability of SAM to the processing of data collected from media having non-negligible conductivity is rather limited. It is necessary to note, that such a conductivity is relevant in all moist soils. Thus, SAM needs a modification that will permit to take into account a distortion of the sounding impulse in a conducting medium. A modification of SAM that enables one to take into account the shape of the radiated impulse at a given depth is discussed. Also, two methods of estimation of this shape are proposed: 1. Rough estimation of the transfer function of the medium using its material parameters; 2. Shape pulse estimation using the FDTD technique.

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合成孔径法探测脉冲形状估计

本文讨论了合成孔径法(SAM)在地下扫描资料中的应用。地空探测是电磁测深数据处理中最强大的技术之一。地对空导弹的优点包括其算法的通用性和能够产生的高分辨率。该技术可以有效地处理非耗散和低吸收介质的图像。在处理从具有不可忽略电导率的介质中收集的数据时，SAM的适用性相当有限。需要注意的是，这种导电性在所有潮湿土壤中都是相关的。因此，SAM需要进行修改，以便考虑到在导电介质中探测脉冲的失真。讨论了一种改进的SAM，使人们能够考虑到在给定深度的辐射脉冲的形状。并提出了两种形状估计方法:1。用介质的材料参数粗略估计介质的传递函数;2. 利用时域有限差分技术进行形状脉冲估计。

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IEEE Antennas and Propagation Society International Symposium. 1999 Digest. Held in conjunction with: USNC/URSI National Radio Science Meeting (Cat. No.99CH37010)

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