Adaptive Mitigation of Jammer & Clutter in an Airborne GMTI scenario using Sample Matrix Inversion Processing
Debasish Bhaskar1, Mousumi Gupta2, Rabindranath Bera3
1Debasish Bhaskar, Department of Electronics and Communication Engineering, Sikkim Manipal Institute of Technology, Majitar (Sikkim), India.
2Mousumi Gupta, Department of Computer Science and Engineering, Sikkim Manipal Institute of Technology, Majitar (Sikkim), India.
3Dr. Rabindranath Bera, Department of Electronics and Communication Engineering, Sikkim Manipal Institute of Technology, Majitar (Sikkim), India.
Manuscript received on 13 February 2014 | Revised Manuscript received on 20 February 2014 | Manuscript Published on 28 February 2014 | PP: 1-7 | Volume-3 Issue-9, February 2014 | Retrieval Number: G1371123713/14©BEIESP
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: In this paper, we propose an adaptive jammer & clutter suppression scheme using digital beam formation (DBF) technology in RADAR with uniform rectangular phased-array antennas. Digital Beam Forming (DBF) algorithm is employed to cover a detection area of long range (2000 m) and angular orientation of [900, -35.260] w.r.t the RADAR platform flying in an Airplane under the airborne scenario. The airplane is actually a carrying a spaceborne radar with its baseband source using linear frequency modulated (LFM) waveform. The RF carrier is used as a single 3 GHz oscillator. The simulation of the flying radar is done with consideration of a ground clutter being generated near to the target zone and also the existence of a wideband Gaussian-distributed barrage-jammer is encountered. The back-end processing uses Sample Matrix Inversion (SMI) of Clutter & Jammer Covariance matrix with subspace-based DBF algorithm [1]. The proposed 3 GHz Adaptive Beamforming and Jammer Suppression (ABJS) in Airborne RADAR can be used for mitigating the Jammers and Clutters in a Ground Moving Target Indicator (GMTI) system prevailing under the war-field condition.
Keywords: Digital Beam Formation, GMTI, Jammer Suppression, Airborne RADAR, Gaussian Distributed Barrage-Jammer.
Scope of the Article: Signal and Image Processing