Optimal waveforms for wideband radar imaging

✍ Scribed by Sameh Sowelham; Ahmed h. Tewfik

• Book ID: 104135079
• Publisher: Elsevier Science
• Year: 1998
• Tongue: English
• Weight: 496 KB
• Volume: 335
• Category: Article
• ISSN: 0016-0032
• DOI: 10.1016/s0016-0032(98)00005-2

✦ Synopsis

In this paper\ we study the problem of optimal radar rane!Doppler imain[ Unlike traditional approaches that start from a iven echo processinmethod\ we identify a radar imainp rocedure by minimizina distance measure between the reconstructed taret re~ectivity function and the actual re~ectivity function[ We show that in the absence of observation noise\ optimal imainis achieved by transmittina set of waveforms derived from a kernel correspondinto the taret re~ectivity function[ Reconstruction is equivalent to computinthe wavelet transforms of each received echo with respect to its correspondintransmitted waveform\ and summinthe results[ We study invariances of the optimal set of imainwaveforms[ Usinthese invariances\ we develop the concept of a taret class[ A taret class is a set of tarets that can be optimally imaed with a sinle library of waveforms[ We conclude by showinthat in the presence of observation noise\ optimal imaindepends on both the noise intensity and the distribution of the sinular values correspondinto the kernel derived from the taret re~ectivity function[ Þ 0887 The Franklin Institute[ Published by Elsevier Science Ltd[