Rao Detector for Passive MIMO Radar With Direct-Path Interference

Passive MIMO radar detection in the presence of clutter or multi‐path without reference channel

“…In this scenario, we suppose there is only one scatterer in the environment as the interference. Figure 8 reports the probability of the false alarm of the proposed detectors and the detector introduced in the study by Fazlollahpour et al [21]. The figure verifies that the probability of the false alarm of the proposed detectors is resistant against the multi-path signal power, while that of the detector in the study by Fazlollahpour et al [21] increases rapidly.…”

“…In Appendix, we discuss about the existence of the inversion in (22). Substituting (22) into (21), and then (21) into (15), and simplifying, the MLE of σ 2 is given bŷ…”

“…Applying Rao test approach, Fazlollahpour et al. [21] have introduced two detectors for the same problem, which have considerably less computational cost compared with the detectors in the studies by Zhang et al. [19,20].…”

“…Herein, generalizing the problem discussed in [19–21], we consider the problem of target detection in a passive multiple‐input multiple‐output (MIMO) radar (PMR), where the receivers include only one channel and the received signals are contaminated by reflections from heavy static scatterers and noise as the interferences. Compared with that in the studies by Fazlollahpour et al.…”

“…An approximate detector has been also introduced by the same authors in [20] to solve the same problem. Applying Rao test approach, Fazlollahpour et al [21] have introduced two detectors for the same problem, which have considerably less computational cost compared with the detectors in the studies by Zhang et al [19,20]. However, all the detectors proposed in [19][20][21] do not consider the problem in the presence of clutter echoes and suppose that the only disturbance signal is the direct-path interference.…”