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Báo cáo hóa học: " Research Article Fully Adaptive Clutter Suppression for Airborne Multichannel Phase Array Radar Using a Single A/D Converter"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Research Article Fully Adaptive Clutter Suppression for Airborne Multichannel Phase Array Radar Using a Single A/D Converter | Hindawi Publishing Corporation EURASIP Journal on Advances in Signal Processing Volume 2010 Article ID 209761 14 pages doi 10.1155 2010 209761 Research Article Fully Adaptive Clutter Suppression for Airborne Multichannel Phase Array Radar Using a Single A D Converter Dan Madurasinghe and Andrew P. Shaw Electronic Warfare and Radar Division Defence Science and Technology Organisation Edinburgh SA 5111 Australia Correspondence should be addressed to Dan Madurasinghe dan.madurasinghe@dsto.defence.gov.au Received 2 March 2010 Revised 7 June 2010 Accepted 10 August 2010 Academic Editor M. Greco Copyright 2010 D. Madurasinghe and A. P. Shaw. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. This study considers an airborne multichannel phase array radar consisting of an analog phase shifter on each channel where the sum channel output is digitised using a single A D converter. Generally for such a configuration the array weights are predetermined for each transmit receive direction and are nonadaptive to the clutter. In order to achieve any adaptivity to the environment the convention is to split the array into at least two subgroups and implement two analogs to digital converters. A single A D-based software solution numerically stable robust is proposed to achieve the full sidelobe adaptation to clutter. The proposed algorithm avoids these engineering complications involved in implementing multiple A Ds for radar applications while maintaining the same desired performance. As a large number of airborne radar platforms already exist worldwide the possible applications of this proposed fully adaptive upgrade as a software solution can be huge. 1. Introduction The objective of an adaptive array is to combine the elemental outputs appropriately weighted so as to generate an output that is interference free. To .