Patent ID: 6809682
Filing Date: 2004-10-26
Classification: G01S

Abstract:
A method for discriminating and tracking a target in a clutter cloud, comprising:transmitting a first radar signal at a first signal bandwidth for searching and locating a clutter cloud; transmitting a second radar signal at a second signal bandwidth to: identify a range extent of a clutter cloud; determine a centroid and a velocity growth rate of the clutter cloud; and identify a direction of movement of the centroid of the clutter cloud; locking a third radar signal having a third signal bandwidth onto the centroid of the clutter cloud whereby the centroid is tracked within one radar range resolution bin; providing a delay line comprising at least two Doppler filters, the delay line being configured to cover a Doppler frequency range corresponding to a velocity growth rate of the clutter cloud; and processing a reflected radar signal corresponding to the third signal bandwidth, the processing of the reflected radar signal comprising passing the reflected radar signal through the delay line to mitigate a portion of the reflected signal that is reflected by the clutter cloud.