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Million element ISIS array

机译:百万元素ISIS阵列

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摘要

The DARPA ISIS Program is developing and demonstrating technologies to enable a stratospheric airship-based dual-band active-array radar system. The antenna is a UHF and X-band shared aperture with backend digital beamforming. ISIS achieves unprecedented airborne radar performance through use of a large antenna aperture instead of high transmit power. The low-power-density aperture has an areal mass density of only 2 kg/m2. A conceptual future system achieves 360° azimuth coverage using a cylindrical antenna of 36m height and 50.5m diameter. A small demonstration system scheduled for launch in 2013 has a UHF antenna cylinder 8m high and 22m in diameter. A 98m2 rectangular section of this cylinder is populated with active X-band elements. The dual-band array has total receive and overhead power consumption, including off-array components, of only 5W/m2.
机译:DARPA ISIS计划正在开发和演示使平流层基于飞艇的双频有源阵列雷达系统成为可能的技术。天线是带有后端数字波束成形的UHF和X波段共享孔径。 ISIS通过使用较大的天线孔径而不是高发射功率来实现空前的机载雷达性能。低功率密度光圈的面质量密度仅为2 kg / m 2 。一个概念性的未来系统使用高度为36m且直径为50.5m的圆柱形天线实现360°方位角覆盖。计划于2013年发射的小型演示系统具有一个8m高,直径22m的UHF天线圆柱体。该圆柱体的98m 2 矩形截面中装有活动的X波段元素。双频带阵列的总接收和开销功耗(包括阵列外组件)仅为5W / m 2

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