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首页> 外文会议>Conference on Airborne Intelligence, Surveillance, Reconnaissance(ISR) Systems and Applications; 20040413-20040414; Orlando,FL; US >Improved passive millimeter-wave imaging from a helicopter platform
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Improved passive millimeter-wave imaging from a helicopter platform

机译：通过直升机平台改进的无源毫米波成像

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摘要

A second-generation passive millimeter-wave imaging system is being prepared for flight testing on a UH-1H "Huey" helicopter platform. Passive millimeter-wave sensors form images through collection of blackbody emissions in the millimeter-wave portion of the electromagnetic spectrum. Radiation at this wavelength is not significantly scattered or absorbed by fog, clouds, smoke, or fine dust, which may blind other electro-optic sensors. Additionally, millimeter-wave imagery depends on a phenomenology based on reflection rather than emission, which produces a high level of contrast for metal targets. The system to be flight tested operates in the W-band region of the spectrum at a 30 Hz frame rate. The field-of-view of the system is 20 x 30 degrees and the system temperature resolution is less than 3 degrees. The system uses a pupil-plane phased-array architecture that allows the large aperture system to retain a compact form factor appropriate for airborne applications. The flight test is to include demonstrations of navigation with the system in a look-forward mode, targeting and reconnaissance with the system in a look down mode at 45 degrees, and landing aid with the system looking straight down. Potential targets include military and non-military vehicles, roads, rivers, and other landmarks, and terrain features. The flight test is scheduled to be completed in April 2004 with images available soon thereafter.
机译：第二代无源毫米波成像系统正准备在UH-1H“休伊”直升机平台上进行飞行测试。无源毫米波传感器通过收集电磁频谱的毫米波部分中的黑体发射来形成图像。在此波长下的辐射不会被雾，云，烟或细尘显着散射或吸收，雾，云，烟或细粉尘可能会使其他电光传感器失明。此外，毫米波图像依赖于基于反射而不是发射的现象学，这会为金属目标产生高水平的对比度。要进行飞行测试的系统在频谱的W波段区域以30 Hz的帧速率运行。系统的视场为20 x 30度，系统温度分辨率小于3度。该系统使用光瞳平面相控阵架构，该架构允许大光圈系统保持适合机载应用的紧凑型尺寸。飞行测试将包括在前瞻模式下使用系统进行导航，在45度向下模式下以系统进行瞄准和侦察以及在系统向下垂直下进行着陆辅助的演示。潜在目标包括军用和非军用车辆，道路，河流和其他地标以及地形特征。飞行测试定于2004年4月完成，此后不久将提供图像。

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