SBIR PHASE I: A Subsurface Volume Imaging Radar for Polar Region Ice Studies

SBIR PHASE I：用于极地冰研究的地下体积成像雷达

• 批准号: 9560637
• 负责人: Philip Langlois
• 金额: $ 7.49万
• 依托单位: Quadrant Engineering Inc
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1996
• 资助国家: 美国
• 起止时间: 1996-03-01 至 1996-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9560637&HistoricalAwards=false
• 关键词: SBIR; PHASE; Subsurface; Volume; Imaging

9560637 Langlois This Small Business Innovation Research Phase I Project describes remote sensing of the physical properties of earth's surface and subsurface with radar systems. It is of generic interest to the geophysical science community and is important to a wide range of military and commercial applications. Recently, an experimental radar was used by researchers from the University of Kansas to map the thickness of the Jacobshavn glacier in Greenland. This radar produced high range resolution measurements of ice thickness but suffered from very coarse cross-track resolution. This proposal describes a novel nadir-looking imaging radar system that can provide three-dimension volume images of the structure and depth of glaciers and icebergs to depths of several km. by utilizing a conformal array of many antenna elements mounted on the underside of an aircraft wing, we can employ digital beamforming techniques to generate up to 40 beams in the cross-track direction, each with a narrow 1.4 to 3 degree beamwidth. Along track resolution will be achieved by unfocused SAR processing. The resultant volume images generated by this radar will have spatial resolution on the order of 30m x 30m x 30m at ranges of 1 to 2 km, sampled from the top surface down to ground level several km below the surface. Potential commercial applications include surveying ice in polar regions, as well as subsurface imaging of metallic objects, hazardous waste, tunnels, and detection of hard targets through foliage.

9560637 Langlois 这个小型企业创新研究第一阶段项目描述了利用雷达系统对地球表面和地下物理特性进行遥感。 它引起了地球物理科学界的普遍兴趣，并且对于广泛的军事和商业应用也很重要。 最近，堪萨斯大学的研究人员使用实验雷达绘制了格陵兰岛雅各布港冰川的厚度图。 该雷达可对冰厚度进行高分辨率距离测量，但交叉轨迹分辨率非常低。 该提案描述了一种新颖的天底成像雷达系统，该系统可以提供冰川和冰山结构和深度的三维体积图像，深度可达几公里。 通过利用安装在飞机机翼下侧的许多天线元件的共形阵列，我们可以采用数字波束成形技术在跨航迹方向生成多达 40 个波束，每个波束具有 1.4 至 3 度的窄波束宽度。 沿航迹分辨率将通过非聚焦 SAR 处理来实现。 该雷达生成的体积图像在 1 至 2 公里的范围内具有大约 30m x 30m x 30m 的空间分辨率，从顶面到地表以下几公里处的地面进行采样。 潜在的商业应用包括测量极地地区的冰，以及金属物体、危险废物、隧道的地下成像，以及通过树叶检测硬目标。