Aerial Clutter Suppression in a Wind Profiler Radar With Antenna Subarrays

Clutter Mitigation for Wind Profiler Radar Using Adaptive Clutter Suppression and Median Filtering for Doppler Spectra

“…ACS using the directionally constrained minimization of power (DCMP) method [7,10] as an adaptive signal processing is described. It is assumed that a WPR has SAs that compose the main antenna (hereafter MSAs) and those for detecting clutters from low elevation angles (hereafter CSAs).…”

“…Adaptive clutter suppression (hereafter ACS) is a technique to mitigate clutters in time series collected by antenna subarrays (hereafter SAs). The output of ACS is the weighted sum of the time series received by the SAs, and the weight vector for the SAs is determined using an adaptive signal processing based on the constraint of constant gain at the antenna pointing direction and minimizing the power of the received signal [4,5,6,7]. The weighting is equivalent to decreasing the directivity of the reception an-tenna in the clutter arrival direction while that in the antenna pointing direction, from which a clear-air echo is detected, is kept constant.…”

“…The weighting is equivalent to decreasing the directivity of the reception an-tenna in the clutter arrival direction while that in the antenna pointing direction, from which a clear-air echo is detected, is kept constant. Because ACS has flexibility in the clutter arrival direction, it is useful for mitigating clutters whose source exist in the air [7,8]. Clutters whose source exist in the air cannot be easily suppressed by other means.…”

A compact quasi-Yagi antenna for FMCW radar-on-chip-based through-wall imaging

“…where t ∈ [5,148], fw is the width of feeding microstrip, and a1 = 0.027 is the rate of exponential curve for C1, and for the outer edge C2 is defined as: X(t) = −0.5 fw e a2(t−5)…”

“…However, due to the complexity of the scattering scenario, the radar signal undergoes multipath propagation phenomena. These typically manifest themselves as environmental clutter, which may impair the detection and tracking of actual targets [4][5][6][7].…”