Herselman, PLNel, Willem AJCilliers, Jacques E2008-12-092008-12-092006-02Herselman, PL, Nel, WAJ and CIlliers, JE. Effect of DRFM phase responsext on the doppler spectrum of a coherent radar: critical implications and possible mitigation techniques. CSIR Research and Innovation Conference: 1st CSIR Biennial Conference, CSIR International Convention Centre Pretoria, 26-27 February 2006, pp1http://hdl.handle.net/10204/2685CSIR Research and Innovation Conference: 1st CSIR Biennial Conference, CSIR International Convention Centre Pretoria, 26-27 February 2006In this research, the critical implications of the phase response of a Digital Radio Frequency Memory (DRFM) based repeater system on the Doppler spectrum of a modern, coherently processing radar system (for example pulsed Doppler radar) are presented. It is shown that, in addition to the desired Doppler term due to the simulated movement of the repeated echo, the spectrum exhibits a number of unwanted terms which result in spurious responses in the processed radar data set. The radar could exploit these effects to identify the echo as a DRFM-based repeater jammer. When a DRFM is used in the testing of radar equipment the radar system performance will be incorrectly inferred. The paper concludes with a possible mitigation schemeenDigital radio frequency memoryDoppler spectrumRadarDRFMConference PresentationHerselman, P., Nel, W., & Cilliers, J. E. (2006). Effect of DRFM phase responsext on the doppler spectrum of a coherent radar: critical implications and possible mitigation techniques. http://hdl.handle.net/10204/2685Herselman, PL, WAJ Nel, and Jacques E Cilliers. "Effect of DRFM phase responsext on the doppler spectrum of a coherent radar: critical implications and possible mitigation techniques." (2006): http://hdl.handle.net/10204/2685Herselman P, Nel W, Cilliers JE, Effect of DRFM phase responsext on the doppler spectrum of a coherent radar: critical implications and possible mitigation techniques; 2006. http://hdl.handle.net/10204/2685 .TY - Conference Presentation AU - Herselman, PL AU - Nel, WAJ AU - Cilliers, Jacques E AB - In this research, the critical implications of the phase response of a Digital Radio Frequency Memory (DRFM) based repeater system on the Doppler spectrum of a modern, coherently processing radar system (for example pulsed Doppler radar) are presented. It is shown that, in addition to the desired Doppler term due to the simulated movement of the repeated echo, the spectrum exhibits a number of unwanted terms which result in spurious responses in the processed radar data set. The radar could exploit these effects to identify the echo as a DRFM-based repeater jammer. When a DRFM is used in the testing of radar equipment the radar system performance will be incorrectly inferred. The paper concludes with a possible mitigation scheme DA - 2006-02 DB - ResearchSpace DP - CSIR KW - Digital radio frequency memory KW - Doppler spectrum KW - Radar KW - DRFM LK - https://researchspace.csir.co.za PY - 2006 T1 - Effect of DRFM phase responsext on the doppler spectrum of a coherent radar: critical implications and possible mitigation techniques TI - Effect of DRFM phase responsext on the doppler spectrum of a coherent radar: critical implications and possible mitigation techniques UR - http://hdl.handle.net/10204/2685 ER -