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The long horizontal bar running between the aircraft's landing gear is the antenna for the Eagle radar. The AN/APQ-7 , or Eagle , was a radar bombsight system developed by the US Army Air Force . Early studies started in late 1941 under the direction of Luis Alvarez at the MIT Radiation Laboratory , but full-scale development did not begin ...
The upper antenna of the vertical pair was able to be moved up and down the ladder-like extension, causing the lobe pattern to shift and thus allow the altitude angle to be measured. [24] Another problem addressed in the Mk. II was one of the signals being so wide that multiple aircraft would appear on the display.
In June 2015, soldiers performed an initial test and evaluation for the One System Remote Video Terminal (OSRVT), enabling ground forces to control a Gray Eagle's payload. The OSRVT is a portable system consisting of a radio transceiver, laptop, antennas, and software to communicate with the UAV and receive video and other data from it.
On 26 July 2013, the ScanEagle became one of the first unmanned aerial vehicles to be granted certification by the Federal Aviation Administration to fly in U.S. airspace for commercial purposes. ScanEagles will be deployed to Alaska off a ship for ConocoPhillips to scout for icebergs and count whales, protecting drilling platforms and ...
The top shows the directive pattern of a horn antenna, the bottom shows the omnidirectional pattern of a simple vertical dipole antenna. In the field of antenna design the term radiation pattern (or antenna pattern or far-field pattern) refers to the directional (angular) dependence of the strength of the radio waves from the antenna or other ...
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Composite antennas are made by combining one or more simple antenna(s) either with other simple antenna(s) or with some kind of a reflecting surface formed into a screen, or curtain, or curved dish. Usually only one of the component antennas is resonant on the design frequency, and in that typical case, the feedline connects only to the ...
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