Detection of moving intruders from a moving platform using a Ka-band continuous-wave doppler radar

A scanning-beam Doppler radar has been presented which can detect moving intruders from a moving platform. The limitations of the scanning-beam sensor in terms of platform velocity and rotation rate were discussed for a fixed antenna beamwidth. Targets moving at any velocity relative to the platform can be detected, even when the person is moving along with the platform, producing no Doppler return. Estimation and removal of the clutter return was demonstrated in order to detect slow-moving targets whose response is within the clutter bandwidth. The optimal threshold value was determined using performance metrics for classifiers under imbalanced data sets.