ViSAR: A 235 GHz radar for airborne applications

Seong-Hwoon Kim, Ryan Fan, Fred Dominski
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引用次数: 40

Abstract

Integration and flight test results of a first of a kind airborne radar operating in the EHF (extremely high frequency) band is described. This radar, developed under the DARPA (Defense Advanced Research Projects Agency) ViSAR (Video Synthetic Aperture Radar) program operates at 235 GHz over multiple GHz of bandwidth and provides high resolution, video SAR imagery at a very low frame latency to support real time operations. The imagery is generated at a high refresh rate which provides the operator, whether on a manned platform or remotely piloted unmanned air vehicle (UAV) tactical situational awareness of moving targets or changes to stationary scene content. The system was flight tested onboard a DC-3 aircraft and flown in a variety of environmental conditions. The test results produced exceptional SAR imagery and ground moving target indicator (GMTI) detections to validate many model based assumptions about the operation and RF performance in this frequency band.
ViSAR: 235 GHz机载雷达
描述了在EHF(极高频率)波段工作的首个机载雷达的集成和飞行试验结果。该雷达是在DARPA(国防高级研究计划局)ViSAR(视频合成孔径雷达)项目下开发的,工作在235 GHz以上的多GHz带宽上,以非常低的帧延迟提供高分辨率的视频SAR图像,以支持实时操作。图像以高刷新率生成,为操作员提供移动目标或静止场景内容变化的战术态势感知,无论是在有人驾驶平台还是远程驾驶无人飞行器(UAV)上。该系统在DC-3飞机上进行了飞行测试,并在各种环境条件下飞行。测试结果产生了出色的SAR图像和地面移动目标指示器(GMTI)检测,验证了许多基于模型的关于该频段操作和射频性能的假设。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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