The precision to which a parabolic dish must be made in order to focus energy well depends on the wavelength of the energy.
32.
The aircraft's principal sensor was an Ericsson PS 37 X-band monopulse radar, which used a mechanically steered parabolic dish housed in a radome.
33.
:: On a similar topic-there are many radar dishes that went from a perfect parabolic dish to a tear-drop shape to decrease interference.
34.
This has a 40 meter high dome, supported by excess pressure from inside, which protects a 20 m parabolic dish from the weather.
35.
"When it comes to this stage, the government cannot say ` No'to the use of parabolic dishes, as it will then be helpless ."
36.
A parabolic dish this size has no advantage in gain over the corner reflector, so its simplicity of design and construction make it attractive.
37.
The antenna was built up from the center sections of the W�rzburg radar's parabolic dish, stacked vertically to form a single 72-wavelength aperture antenna.
38.
Researchers are anxious to get Spartan back to Earth, because it was difficult for them to see if the antenna's parabolic dish had inflated.
39.
This is because, from the Rayleigh criterion, parabolic dishes can only focus waves with a wavelength much smaller than the diameter of their aperture.
40.
Each receiver in the VLBA consists of a parabolic dish antenna 25 meters ( 82 feet ) in diameter, along with its adjacent control building.
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