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Radar waveform synthesis for exciting single‐mode backscatters from a sphere and application for target discrimination
Author(s) -
Chen KunMu,
Westmoreland Doug
Publication year - 1982
Publication title -
radio science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.371
H-Index - 84
eISSN - 1944-799X
pISSN - 0048-6604
DOI - 10.1029/rs017i003p00574
Subject(s) - waveform , radar , physics , optics , impulse (physics) , signal (programming language) , acoustics , mode (computer interface) , computer science , telecommunications , quantum mechanics , programming language , operating system
A new scheme for radar detection and discrimination, the radar waveform synthesis method, is investigated for a spherical target. This scheme consists of synthesizing a waveform for the incident radar signal which excites the target in such a way that the return signal from the target consists of only a single natural mode of that target in the late‐time period. When the incident waveform synthesized to excite a particular natural mode of a known, preselected target is applied to a wrong target, the return signal will be significantly different from that of the expected natural mode; thus the wrong target can be sensitively discriminated. An approximate impulse response of a sphere is obtained by summing up an infinite number of natural modes of the sphere based on the singularity expansion method. Required incident signals for exciting various single‐mode backscatters from the sphere are obtained. Numerical examples are given to demonstrate target discrimination sensitivity based on this method.