A comprehensive investigation of retrodirective cross-eye jamming

• Main Author: Du Plessis, W.P. (Warren Paul)
• Other Authors: Odendaal, J.W. (Johann Wilhelm)
• Published: 2013
• Subjects: And radar; Jamming; Radar position measurement; Radar measurements; Radar antennas; Radar tracking; Monopulse radar; Radar countermeasures; Electronic countermeasures; Electronic warfare; UCTD
• Online Access: http://hdl.handle.net/2263/25480; Du Plessis, WP 2010, A comprehensive investigation of retrodirective cross-eye jamming, PhD thesis, University of Pretoria, Pretoria, viewed yymmdd < http://hdl.handle.net/2263/25480 >; http://upetd.up.ac.za/thesis/available/etd-06122010-215639/

Cross-eye jamming is an Electronic Attack (EA) technique that induces an angular error in the radar being jammed. The main benefit of cross-eye jamming is that it is effective against monopulse tracking radars, which are largely immune to other forms of jamming. The objective of this research is to gain a complete understanding of cross-eye jamming so that systems that might be developed in future can be properly specied. The main contribution of this work is a comprehensive mathematical and experimental study of retrodirective cross-eye jamming. The mathematical analysis considers all aspects of an isolated, single-loop, retrodirective cross-eye jamming engagement, thereby avoiding the approximations inherent in other cross-eye jamming analyses. Laboratory experiments that accurately represent reality by using the radar for both transmission and reception, and simulating a true retrodirective cross-eye jammer were performed to validate the theoretical analysis. Lastly, the relationship between the angular error induced in the radar being jammed and the matching required from a cross-eye jammer system is explored. The most important conclusion of this work is that the traditional analyses of cross- eye jamming are inaccurate for the conditions under which cross-eye jammers operate. These inaccuracies mean that the traditional analyses are overly conservative, particularly at short ranges and for high cross-eye gains, suggesting that practical cross-eye jammers can be realised more easily than is generally believed. === Thesis (PhD)--University of Pretoria, 2010. === Electrical, Electronic and Computer Engineering === unrestricted