Real time motion compensation for synthetic aperture radar

Abstract

Presented is a real time solution to link the Pulse Repetition Frequency (PRF) of a Synthetic Aperture Radar (SAR) to the aircraft forward velocity without using an Inertial Navigation System (INS). The aircraft forward velocity is extracted using the Reflectivity Displacement Method (RDM). The control system used for coupling the RDM with the variable PRF unit is a non-linearand adaptive one, and based on an ideal on-off relay.