Tracking and data fusion with the Hensoldt Passive Radar System

Experimental Verification of the Concept of Using LOFAR Radio-Telescopes as Receivers in Passive Radiolocation Systems

“…After the initial preprocessing of received signals including sampling and decimation (in our implementation the decimation rate was 100—from 200 MHz to 2 MHz), the signal processing operations typical for the passive radar were performed, i.e., adaptive filtering, calculation of the cross-ambiguity function (CAF), target detection, estimation of target parameters [ 5 , 27 ] and tracking [ 6 , 28 , 29 , 30 , 31 ]. The sequence of the implemented operations is shown in Figure 8 .…”

“…Even after the beamforming, the target surveillance channel still contains significant amount of clutter and direct-path signals, originating from the leakage of the direct-path signal via sidelobes of the surveillance beam, which have usually much higher power than reflected echoes. After the initial preprocessing of received signals including sampling and decimation (in our implementation the decimation rate was 100-from 200 MHz to 2 MHz), the signal processing operations typical for the passive radar were performed, i.e., adaptive filtering, calculation of the cross-ambiguity function (CAF), target detection, estimation of target parameters [5,27] and tracking [6,[28][29][30][31]. The sequence of the implemented operations is shown in Figure 8.…”