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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 more easily detected. A larger RCS indicates that an object is more easily detected.
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 size of a target's image on radar is measured by the radar cross section (RCS), often represented by the symbol σ and expressed in square meters. This does not equal geometric area. A perfectly conducting sphere of projected cross sectional area 1 m 2 (i.e. a diameter of 1.13 m) will have an RCS of 1 m 2. Note that for radar wavelengths ...
These techniques borrow from stealth aircraft technology, although some aspects such as wake and acoustic signature reduction (acoustic quieting) are unique to stealth ships' design. Although radar cross-section (RCS) reduction is a fairly new concept, many other forms of masking a ship have existed for centuries or even millennia.
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.
Radar MASINT is a subdiscipline of measurement and signature intelligence ... RADINT collection provides information on radar cross-sections, tracking, precise ...
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.
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 ...