Modeling of bistatic scattering from an underwater non-penetrable target using a Kirchhoff approximation method
Modeling of bistatic scattering from an underwater non-penetrable target using a Kirchhoff approximation method作者机构:Collaborative Innovation Center for Advanced Ship and Deep-Sea ExplorationState Key Laboratory of Ocean EngineeringShanghai Jiao Tong UniversityShanghai200240China
出 版 物:《Defence Technology(防务技术)》 (Defence Technology)
年 卷 期:2022年第18卷第7期
页 面:1097-1106页
核心收录:
学科分类:11[军事学] 1109[军事学-军事装备学]
基 金:the Oceanic Interdisciplinary Program of Shanghai Jiao Tong University(project number SL2021PT108)
主 题:Kirchhoff approximation Bistatic scattering Time domain Reciprocity Experiment
摘 要:A numerical triangulation and transformation into the time domain of a Kirchhoff approximation(KA)method is proposed for the modeling of bistatic scattering from an underwater non-penetrable *** time domain solution in this approximation can be split up into two parts:the solution of reflected field,contributing around the specular direction,and the solution of shadow radiation,contributing around the forward *** average solution in the time domain satisfying the reciprocity principle is *** solution is expressed in terms of non-singular *** proposed method is validated against a normal mode method for bistatic scattering from a rigid ***,the reflected and shadow highlights on the surface of the sphere are shown to verify the integration surface of the reflected field and shadow *** is also tested against a finite element method and an experiment involving a scaled Benchmark Target Strength Simulation Submarine *** time-angle bistatic spectra for the model are evaluated by the direct and transformed average solutions of KA,and the former accelerates its speed of *** results are good,and show that this method can be used to predict the bistatic scattered field of a non-penetrable target.