Author:Olivier, K; Cilliers, Jacques E; Du Plessis, MDate:Jul 2011The test and evaluation of modem radars using hardware in the loop simulators requires the use of wideband high-fidelity, digital radio frequency memories (DRFM) in order to generate realistic target retums. Important aspects of wideband DRFM ...Read more
Author:Herselman, PL; Cilliers, Jacques EDate:27 Feb 2006This paper presents the Digital Instantaneous Frequency Measurement (DIFM) technique, which can measure the carrier frequency of a received waveform within a fraction of a microsecond. The resulting frequency range, resolution and accuracy ...Read more
Author:Herselman, PL; Nel, Willem AJ; Cilliers, Jacques EDate:Feb 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 ...Read more
Author:McDonald, Andre M; Van Wyk, MADate:Sep 2018A novel random signal generator design that accommodates the specification of both the sample probability distribution as well as the signal bandwidth is presented in this paper. The generator achieves a high degree of computational efficiency ...Read more
Author:Strydom, JJ; Cilliers, Jacques E; Gouws, M; Naicker, D; Olivier, KDate:Oct 2012This paper describes the development and testing of a digital radio frequency memory (DRFM) kernel, as well as some of the functionality which has been added to the system to make it a fully-fledged hardware in the loop (HIL) radar environment ...Read more
Author:Strydom, JJ; De Witt, JJ; Cilliers, Jacques EDate:Oct 2014This paper describes a simple process for the generation of arbitrary probability distributions of complex data with correlation from sample to sample, optimized for hardware in the loop radar environment simulation. Measured radar clutter ...Read more
Author:Van der Merwe, Johannes R; Strydom, Jurgen J; Cilliers, Jacques EDate:Oct 2016This paper proposes a practical implementation for the generation of real-time K-Distributed correlated sea-clutter in firmware. The method uses a dual cumulative distribution function (CDF) based look-up method to transpose a complex uniformly ...Read more