Wind farm turbines create a Doppler effect as they rotate, creating a potential radar blackout zone.

风力涡轮机在旋转过程中产生多普勒效应，形成一个潜在的雷达中断区。

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The HALS system provided the UH-60 pilots with continuous 3d real-time radar imagery of the landing zone throughout the approach, hover, and landing in complete brownout.

在灯火管制情况下，在整个接近、盘旋和着陆过程中，HALS系统可以向UH - 60飞行员提供着陆区的连续三维实时雷达图像。

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"The Bagram MERLIN system is the first use of bird radar technology in a war zone, another industry first for DeTect," commented Gary Andrews, DeTect's CEO.

公司总裁Gary Andrews说：“巴格·拉姆的MERLIN系统是鸟击雷达技术首次在战争地区使用，对DeTect公司来讲也是首次。”

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As soon as a helicopter goes beyond the 80-mile zone covered by land-based radar, its signal is picked up by the offshore platforms, with the data then returned to the airport.

BBC: Helicopter location system begins

Gortney said Saturday no U.S. aircraft were operating over Libya, but recent talk of a no-fly zone over Libya sparked speculation over whether high-end, radar-evading stealth aircraft like the Air Force F-22 Raptor might be employed.

WSJ: Strikes Designed to Knock Out Libyan Air Defenses

Warplanes targeted Iraqi air defense facilities south of Baghdad that included radar systems that have been threatening American and British aircraft patrolling the no-fly zone, the Pentagon said.

CNN: Western diplomats surprised by airstrikes on Iraq