Title :
Adaptive hot clutter mitigation using subbanding
Author :
Jouny, I. ; Culpepper, E.
Author_Institution :
Dept. of Electr. Eng., Lafayette Coll., Easton, PA, USA
Abstract :
Hot clutter mitigation using an adaptive array is the focus of the paper. A model that includes all relevant hot clutter parameters such as spatial delay, Doppler, and carrier phase angle is developed. Subbanding using DFT or the wavelet transform is implemented prior to adaptive processing and tap delay filtering. A comparison between the two subbanding techniques using the cancellation ratio as a performance measure is presented. The effects of the number of tap delays, jamming angle of arrival, Doppler spread, and jammer relative bandwidth on the performance of an adaptive array are examined
Keywords :
Doppler effect; adaptive antenna arrays; adaptive signal processing; aircraft communication; clutter; delays; direction-of-arrival estimation; discrete Fourier transforms; interference suppression; jamming; mobile antennas; wavelet transforms; DFT; Doppler spread; adaptive array; adaptive hot clutter mitigation; adaptive processing; cancellation ratio; carrier phase angle; jamming angle of arrival; performance measure; relative bandwidth; spatial delay; subbanding; tap delay filtering; wavelet transform; Adaptive arrays; Bandwidth; Clutter; Delay lines; Filters; Interference; Jamming; Propagation delay; Sensor arrays; Signal to noise ratio;
Conference_Titel :
Time-Frequency and Time-Scale Analysis, 1994., Proceedings of the IEEE-SP International Symposium on
Conference_Location :
Philadelphia, PA
Print_ISBN :
0-7803-2127-8
DOI :
10.1109/TFSA.1994.467310
