Nearfield Detection o£a^rossing Target in Clutter

The detection of a crossing target in the nearfield in Gaussian clutter is explored. The relative phase shifts across antenna elements are nonlinear functions of the geometry and change through time. Consequently, crossing targets in the nearfield exhibit a changing phase called spatial Doppler and can be separated from the highly correlated clutter. By using two examples, the signal-to-noise ratio is shown to be significantly enhanced for the crossing target in clutter.