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EXTRACTION OF NATURAL FREQUENCY FROM MEASURED LATE-TIME TRANSIENT RESPONSES WITH RATIONAL MINIMAX APPROXIMATION IN FREQUENCY DOMAIN

EXTRACTION OF NATURAL FREQUENCY FROM MEASURED LATE-TIME TRAN...

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1998 International Conference on Microwave and Millimeter Wave Technology

作者： Jiao Dan Xu Shanjia Wu Xianliang Dept.of Electronic Eng.& Information Sci. Univ.of Science & Technology of China Dept.of Electronic Eng.& Information Sci. Anhui University

ISBN: (纸本)0780343085

＜正＞A simple technique is presented for extracting natural frequencies from measured late-time transient *** method first applies rational mini-max approximation to the Fourier transform of the even extension of a transient response,then obtains natural frequencies directly from the zeros of the denominator polynomial of the optimum rational function. The effectiveness of the method is verified with a synthetic transient response and a measured response of a conducting *** results from the present method for the synthetic tfansient response are compared with those from constrained E-pulse technique （CET） and genetic algorithm technique（GAT）.It indicates that the present method avoids an initial guess,overcomes the tendency to get stuck in local minima and requires much less computer effort than the *** addition,unlike the GAT,it generally guarantees convergence and is insensitive to any parameter.

关键词： transient response convergence of numerical methods minimax techniques poles and zeros radar theory Fourier transforms natural frequency extraction late-time transient responses rational minimax approximation frequency domain Fourier transform denominator polynomial optimum rational function conducting sphere convergence radar target identification

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Target Location Based on Range-Difference Information from a Multistatic radar System

Target Location Based on Range-Difference Information from a...

引用

1998 International Conference on Microwave and Millimeter Wave Technology

作者： Wei Chong-yu Xu Shan-jia Wang Dong-jin Department of Electronic Engineering and Information Science The University of Science and Technology of China

ISBN: (纸本)0780343085

This paper describes a new method for locating a short range target based on rangedifference information from a T-R multistatic radar system using FMCW *** for the target location are derived with independent of transmitter position coordinates,which is very much fit for the applications that flexible transmitter is *** are simulated with the present algorithm and the results are presented for various conditions.

关键词： FM radar CW radar radar theory military radar target location algorithm range-difference information multistatic radar system short range target location FMCW signal

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