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It depends. Flying below radar is usually flying below the equipment used to detect things on radar. It could be a very high tower, hundreds of stories off of the ground, or it could be a satellite just a couple stories off of the ground.
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How do you make plane invisible to the radar?
It is not possible (with today's technology) to make a plane completely invisible, but there are techniques to reduce the radar energy being reflected to the radar aerial. If reduced enough, the aircraft may appear smaller than it is, or even be classified by the system or operator as a non-aircraft. The aim is to reduce the Radar Cross Sectional Area (RCA) of the plane.This technology is commonly referred to as 'stealth'. Modern stealth aircraft have an RCA much smaller than 1 square metre and in some circumstances can be as low as that of a large bird.The most noticeable method of reducing RCA is to eliminate right angles and especially internal angles of 90 degrees. This is because energy entering will be reflected straight back the way it came. By using curves and obtuse or acute angles the energy is instead reflected away from the radar source. Use of clean lines and unbroken surfaces also reduces bumps and protrusions which also increase the RCA. By comparing a modern stealth fighter to older aircraft, it is clear that care has been taken to eliminate any feature which would reflect radar energy.Another less obvious technique is to use radar absorbent paint. This expensive material works best against specific wavelengths of radar and will dramatically reduce the reflected energy. It works by allowing a proportion (about 50%) of the energy to be reflected and the remainder to penetrate. If the paint is exactly 1/4 of a wavelength think (hence the expense!) it will reflect off the inner paint surface and be 'antiphase' as it emerges again. This cancels out much of the radar energy in the same way that ripples in a pond from two pebbles cause patterns of high and low ripples.Combinations of techniques such as these can reduce the aircraft RCA to that below the capability of most radars to detect at normal range. As the aircraft approached the radar emitter the radar signal will be increased until it is recognisable as an aircraft. However, by avoiding flying close to radars it may be possible to avoid detection at all, or at the least until it is too late to be a problem for the mission.
What is ground penetrating radar used for?
Ground penetrating radar (GPR) is a geophysical method that uses radar pulses to image the subsurface. When the waves hit an object, the receiving antenna can be used to distinguish what it is. This can be used to find precious metals, like gold, underground.
What is the history of the Doppler RADAR?
Doppler RADAR measures the speed of objects using the Doppler effect (discovered by the Austrian mathematician and physicist Christian Andreas Doppler in 1842 at the Prague Polytechnic) in addition to the position measured by ordinary RADAR. The earliest version of Doppler RADAR was introduced by the U.S. Navy during WW2 on night fighters. Doppler RADARs are used now in aviation, sounding satellites, meteorology, police speed guns, radiology and healthcare (fall detection and risk assessment, nursing or clinic purpose), and bistatic radar (surface-to-air missile).
How do paper planes fly?
Paper airplanes fly because of the velocity and air pressure on either sides of the wings. Air is also pushed to the bottom upward to the plane.
What is the difference between low voltage release and low voltage protction?
After a power failure, a device with low voltage protection will not restart automatically after power is restored to normal. This normally means that the breaker must be reset. A device with low voltage release automatically starts when power is returned to normal.
Is MXE legal in the US and Canada?
Probably not, but it might fly under the radar.
How high does the military planes fly?
military aircraft will fly at any height. one tactic they use to avoid radar is to fly as low as possible as low as 10-20 m. there are aircraft used in military operatrions that fly as high as 80,000 ft or 24 km above the ground.
Why didn't radar detect the incoming Japanese airplanes?
They did, but sometimes the planes would fly very low so that the radars could not detect them.
What does below the radar mean?
Radar is a technology which detects objects by bouncing radio waves off of them. It was brought into widespread use during the second world war as a way of discovering oncoming aircraft. However, low-flying aircraft could not be detected by radar, hence they flew "under the radar", that is, low enough not to be detected. Something which is "under the radar" is therefore something which cannot be detected. Often it is used for something which is too small or apparently insignificant to be detected by whatever means are being used to detect it.
What happens if you never file your state income taxes?
You have a best chance to fly under the radar if you have never filed taxes at all.
What bats use to fly palindrome?
radar
When was Under the Radar - magazine - created?
Under the Radar - magazine - was created in 2001.
How do aircraft fly to proper destinations in darkness?
radar
When was Flying Under the Radar created?
Flying Under the Radar was created on 2006-06-13.
How do you put radar in sentence?
i flew under the radar..... come on
What is aerostat radar?
Aerostat radar is a low-level surveillance system that uses aerostats (moored balloons) as radar platforms.
What are the ratings and certificates for Under the Radar - 2004?
Under the Radar - 2004 is rated/received certificates of: Australia:M
