An Analysis of Radio Frequency Interferences in L-Band SAR Images

Abstract

SAR(Synthetic Aperture Radar) systems can provide images of wide coverage in day, night, and all-weather conditions. However wideband SAR systems are known to be vulnerable to interferences from other devices operating at in-band or adjacent spectrums and this may lead to image corruptions. In this paper, a SAR point target simulator is developed that provides performance analysis on image distortion caused by interferences from other devices. Interference signals are generated based on the experimental data observed from acquired SAR raw data. Simulation results include typical SAR performance measures such as spatial resolution, peak to sidelobe ratio and integrated sidelobe ratio. Finally, SAR target simulations are performed and shown to correspond to the image corruptions found in real SAR missions affected by RF interferences.

Scenario Design and Analysis of Satellite SAR Jamming Performance by Ground Radar

“…″는 반복적으로 송신하 는 잡음 신호에 대하여 선형적으로 변화하는 주파수 성 분을 나타내며, 방위 방향의 신호에 대한 주파수 이동을 의미한다. ′′′는 거리 및 방위 방향의 시간과 상관없이 위성 센서가 데이터를 획득하는 시간 동안에 임의로 추 가되는 위상 이동을 나타낸다 [5] .…”