Common waveform for simultaneous SAR and GMTI

Abstract

Surveillance RADARs normally share time for detecting fixed and moving targets. With modern digital waveform synthesis and high performance computing, it is feasible to collect signals that use space, time and frequency encoding to simultaneously operate in GMTI and SAR modes. This paper summarizes a new waveform and adaptive RADAR architecture with the potential for simultaneous SAR and GMTI operation, along with a detailed simulation of target detections.

Diverse, orthogonal waveforms and signal processing architecture for joint GMTI and SAR applications

“…Murthy, Pillai, Davis [17] presented frequency-jump burst waveforms for simultaneous SAR and GMTI. Davis [18] also presented a common waveform for simultaneous SAR and GMTI. As mentioned earlier, if an object moves slowly and accurate registration of two time-successive SAR images can be performed, endoclutter GMTI provides good detection performance of the slow moving object (assuming range ambiguity is not an issue).…”

Analysis of SAR Processing Performances with FJB Waveforms

“…최근 들어 전투기나 정찰기와 같은 항공기 레이 다에서는 고해상도 SAR 영상에서 지상의 이동 표적을 탐 지하여 속도와 위치 정보를 제공하는 SAR-GMTI 모드가 점점 더 필수적으로 운영되고 있으며, 이 기술에 대한 많 은 연구가 진행되고 있다. [2]～ [5] . FJB 파형은 광대역의 LFM 파형을 복수개의 협대역 파형 으로 분리하여 사용하는 기법으로 synthetic wideband waveforms(SWW), stepped chirp signal, stepped frequency train 등의 이름으로도 불리고 있다 [6] .…”