雷达前视高分辨技术

Radar forward-looking high-resolution technology

摘要

雷达前视高分辨技术可为运动平台提供正前方区域的精细化角度分辨能力，在精确打击、自主着陆、低空突防等军民领域具有重要应用价值与广阔前景。该文以空时变契合理论为统一框架，系统阐述雷达前视高分辨的物理基础与数学实质，并将前视高分辨技术划分为运动调制、辐射调制、复合调制三大类别，深入分析多普勒波束锐化、双基前视 SAR、扫描波束锐化、电磁涡旋雷达、随机辐射雷达等体制的实现机理与性能差异，形成完整的前视高分辨技术体系。最后，对雷达前视高分辨技术的未来发展方向进行了展望，以期为相关领域的研究人员提供参考。

Abstract

Radar forward-looking high-resolution technology enables moving platforms to achieve fine angular resolution in the forward-looking area, offering significant application value and broad prospects in both military and civilian sectors, such as precision strikes, autonomous landing, and low-altitude penetration. By adopting the theory of spatiotemporal variability compatibility as a unified framework, this paper systematically elucidates the physical foundations and mathematical essence of radar forward-looking high-resolution imaging. It categorizes forward-looking high-resolution technologies into three main types: motion modulation, radiation modulation, and composite modulation, and deeply analyzes the implementation mechanisms and performance differences of various systems, including Doppler beam sharpening (DBS), bistatic forward-looking synthetic aperture radar (SAR), scanning beam sharpening (SBS), vortex electromagnetic radar (VER), and stochastic radiation radar (SRR), forming a complete forward-looking high-resolution technology system. Finally, the paper outlines future development directions for radar forward-looking high-resolution technology, aiming to provide a useful reference for researchers in the field.

关键词

雷达前视成像 / 雷达高分辨成像 / 前视成像技术 / 空时变契合

Key words

radar forward-looking imaging / radar high resolution imaging / forward-looking imaging technology / spatiotemporal variability compatibility

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基金资助

国家自然科学基金(U25B200901, 62301131)