Northrop Grumman Systems Corporation

Edward F Stockburger

Robert A Guarino

Russell Whitman, Ii

John P Robinson

Daniel N Held

Hugh D Holt, Jr

Kevin J Kelly

Miguel E Loiz

An interferometric moving target radar imaging system includes a plurality of simultaneously operating apertures, receivers and processing channels which together coherently process RF return signals to image a moving vehicle. The system corrects for the different phase centers of the apertures and interferometrically combines the return signals from different apertures to attenuate the energy from stationary objects. The true azimuth location of the moving vehicle within main beam clutter spread is then determined which facilitates distinguishing between slow moving and stationary objects to detect the moving objects which are then tracked and imaged in the range doppler domain.

Interferometric moving vehicle imaging apparatus and method

One meter and one foot resolution is achieved in a multi-mode SAR radar system in real time by wide bandwidth RF signal generation, precision motion compensation, polar reformatting, autofocusing and high dynamic range image processing. An exciter/receiver of this system includes means for providing wideband RF waveform generation and down-conversion, while a programmable digital signal processor includes improvements in software for implementing the functions of motion compensation including the presuming of data, polar reformatting, autofocusing and image processing.

Multi-mode radar system having real-time ultra high resolution synthetic

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North Caldwell, NJ, United States of America

Edward F Stockburger