International Journal of Wireless and Microwave Technologies (IJWMT)
IJWMT Vol. 6, No. 6, 8 Nov. 2016
Cover page and Table of Contents: PDF (size: 850KB)
Integrated Guard Channel Synthesis in AESA based Airborne Surveillance Radar
Full Text (PDF, 850KB), PP.1-13
Views: 0 Downloads: 0
Author(s)
R Rajesh
1,*
P V Rao
1
Suma Varughese
1
Index Terms
Guard Channel, AESA, Phase Spoiling, Blanking Probability, Adaptive threshold, Near Field Measurement
Abstract
The guard channel is very effective in eliminating side-lobe returns, both targets and discrete clutter, in airborne radar's. The ideal design criterion for the guard channel is that all the side lobes of the main antenna are covered by the guard pattern. In this paper a novel design approach of generating the guard using the elements of the main Active Electronically Scanned Array (AESA) antenna, thereby eliminating the need for a separate antenna, is presented. The ground clutter has an angle dependent Doppler and clutter discrete that leak in through the side lobes, especially the inter-cardinal elevation side lobes looking at the near range, needs to be eliminated. Towards this the design of the weighting coefficients for the guard to cover all the side lobes of the main array is discussed. Furthermore a digital threshold scheme is proposed to improve the effectiveness of guard channel in eliminating side-lobe returns. The detection loss and blanking probability are characterized for the design. The measurement results confirm that the design objectives are met.
Cite This Paper
R Rajesh, P V Rao, Suma Varughese,"Integrated Guard Channel Synthesis in AESA based Airborne Surveillance Radar", International Journal of Wireless and Microwave Technologies(IJWMT), Vol.6, No.6, pp.1-13, 2016. DOI: 10.5815/ijwmt.2016.06.01
Reference
[1]Aranciba P. O, Side-lobe blanking system design and demonstration, Microwave journal Vol 21, No3, March 1978.
[2]Johnster S L (ed), Radar electronic counter counter measures, Artech house, 1979.
[3]Maisel L, Performance of side-lobe blanking systems, IEEE Trans Aerospace and Electronic systems Vol 4, No 2, March 1968.
[4]Simpson G . W, Introduction to airborne radar, Huges aircraft co., 1983.
[5]W C Morchin, Airborne early warning radar, Artech house, 1990.
[6]Harvey D. H and Wood T. L, Designs for side-lobe blanking systems, Proceedings of IEEE international radar conference, April 1980.
[7]O' Sullivan M R, A comparison of sidelobe blanking systems, Proceedings of IEEE international radar conference, April 1987.
[8]Farina A and Gini F, Interference blanking probabilities for SLB in correlated Gaussian clutter and noise, IEEE Trans on signal processing, Vol 48, No 5, May 2000.
[9]Farina A and Gini F, Calculation of blanking probability for the sidelobe blanking for two interference statistical modes, IEEE Signal processing letters, Vol 5, No 4, April 1998.
[10]Johnson M A and SC Storer, ECCM from the radar designers viewpoint, IEEE Electronics-76, May 1976.
[11]R Kinsey, Phased array beam spoiling technique, IEEE Trans. Antennas and Propagation, 1997.
[12]O Coksun, C. Canden, On Optimality of Maisel side lobe blanking, 23rd Signal processing and communication applications conference, pp 585-591, 2015.
[13]Farina A and Gini F, Design of SLB systems in the presence of correlated ground clutter, IEE proceedings on Radar, Sonar and Navigation, Issue 4, vol 147, 2000.
[14]A De Maio, A. Farina, M Fiorini, A. Morini, Performance analysis of side lobe blanking systems in presence of mutual coupling, IET international conference on radar systems, pp 1-5, 2007.
[15]O' Sullivan M R, Side lobe blanking system performance for Swirling target, International Conference on Radar, April 1989.
[16]F. Mingyi, G. Jianjun, Q. Weil, W, Manqing, Side lobe blanking in Doppler domain for an Airborne side looking phased array PD radar, CIE International Conference on Radar, 20016.
[17]B. Magaz, M. L. Bencheku, H. Hamadouche, A. Belouchrani, Design and real time implementation of a novel combined CA-CFAR/SLB system on TMS 3200C67x processor, International Radar Symposium, pp 1-4, 2006.
[18]S Boyd and L. Vandenberghe, Convex optimization, Cambridge university Press, 2008.