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Radar cross-section (RCS), denoted σ, also called radar signature, is a measure of how detectable an object is by radar. A larger RCS indicates that an object is ...
Helendale Auxiliary Airfield, in a 1952 USGS photo Lockheed Helendale Radar Cross Section Facility in a 1994 USGS photo Lockheed Martin X-35 testing at Helendale Avionics Facility in May 2000, US Navy photo. Helendale Auxiliary Airfield (No 2) was built in 1941 for training pilots from Victorville Army Airfield during World War II. No support ...
Vertical cross-section through a supercell showing the BWER. The bounded weak echo region, also known as a BWER or a vault, is a radar signature within a thunderstorm characterized by a local minimum in radar reflectivity at low levels which extends upward into, and is surrounded by higher reflectivities aloft, forming a kind of dome of weak echoes.
Search radar that include pulse-Doppler are usually dual mode because best overall performance is achieved when pulse-Doppler is used for areas with high false alarm rates (horizon or below and weather), while conventional radar will scan faster in free-space where false alarm rate is low (above horizon with clear skies).
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The F-117 has a radar cross-section (RCS) of about 0.001 m 2 (0.0108 sq ft). [68] Among the penalties for stealth are subsonic speeds to prevent frame heating, heat on the engine inlet and outlet prevent certain thrusting maneuvers, a very low wing aspect ratio, and a high sweep angle (50°) are needed to deflect incoming radar waves to the sides.
Passive (multistatic) radar, bistatic radar [25] and especially multistatic radar systems detect some stealth aircraft better than conventional monostatic radars, since first-generation stealth technology (such as the F-117) reflects energy away from the transmitter's line of sight, effectively increasing the radar cross section (RCS) in other ...
The use of advanced composite materials on the airframe has commonly resulted in reductions in an aircraft's radar cross-section (RCS). [28] In the case of the Eurocopter Tiger, numerous measures were incorporated in its design so that it would possess minimal visual, radar, infra-red and acoustic signatures, which enhances the Tiger's ...