Architecture of the Overlapped Subarray Fed Reflector Antenna SAR System

The electrical architecture of a multibeam hybrid Synthetic Aperture Radar system is presented. The SAR Instrument is a hybrid analogue-digital multichannel radar system intended to provide high resolution and wide swath coverage. To achieve that the system is composed of a large oversize reflector fed by a multibeam CORPS (Coherently Radiating Periodic Structure) feedarray. The architecture of the system corresponds to a distributed semiactive digital configuration that extends along the feedarray length. The paper presents the main characteristics of the electrical architecture of the OLAF SAR.