The research objective is a high resolution SAR
receiver. The ability to create this device for UAV discovers in the process of
research. Problems of device designing and debugging are identified, the search
for solutions is performed. Review of existing devices has been performed. Variants
of structural schematics of the device have been designed. The advantages and
disadvantages of both schemes have been considered. According to the
requirements the most suitable scheme is selected. Models of receiver elements have
been designed. Experiments have been performed to determine the characteristics
of a real device. The main problems have been identified. Problems of
protection of circuit input of high power signals have been solved. Automatic
gain control system and input power control system have been designed. Parasitic
feedback inside the case of SAR problems has been solved. Completed device meets
its requirements, is suitable for use in UAV SAR.
synthetic aperture radar, unmanned aerial vehicle, radar resolution.