USE OF THE COMPLEX IMAGE TO RECOGNIZE AND TRACE MULTIPATH RETURNS IN TURNTABLE DATA

摘要

Responses in turntable imagery are properly focused if they behave as fixed point scatterers in the focal plane chosen for polar formatting. Other responses, be they generated by more complicated back- scattering or by fixed point scatterers outside the focal plane, have a curved phase. This curved phase can be used to recognize responses due to reflection between separated scatterers, and to determine the locations of the contributing scatterers, whether the scatterers are located on the target, its mount, or the turntable. For nonzero depression angles, the phase curvature can also be used to measure the height of a point reflector.