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Because the external radar causing the transponder to respond is generally not synchronised with your own radar (i.e. different pulse-repetition frequencies), these black dots appear randomly across the display and the operator sees through and around them. The returning image may be much larger than the "dot" or "hole", as it has become known ...
A few of the single-seat fighters had the FuG 350 Naxos device to detect H2S radar (the first airborne, ground scanning radar system) emissions from the bombers. Six weeks after the Hamburg raid, the Luftwaffe used Düppel in 80 cm × 1.9 cm (31.50 in × 0.75 in) lengths during a raid on the night of 7/8 October 1943. [ 12 ]
The radar mile is the time it takes for a radar pulse to travel one nautical mile, reflect off a target, and return to the radar antenna. Since a nautical mile is defined as 1,852 m, then dividing this distance by the speed of light (299,792,458 m/s), and then multiplying the result by 2 yields a result of 12.36 μs in duration.
This designation may also be the collective name of any radar set in general, up to target location, illuminating, acquisition and tracking, as well as radar sigh, altimeter and precision-guided munitions or bombs. Each radiodetermination station shall be classified by the radiocommunication service in which it operates permanently or temporarily.
Radar engineering is the design of technical aspects pertaining to the components of a radar and their ability to detect the return energy from moving scatterers — determining an object's position or obstruction in the environment.
The group’s mission is to “develop a fully 3D weather radar that can accurately track the movement and growth process of cloud particles and large-scale weather fronts.”
A plan position indicator (PPI) is a type of radar display that represents the radar antenna in the center of the display, with the distance from it and height above ground drawn as concentric circles. As the radar antenna rotates, a radial trace on the PPI sweeps in unison with it about the center point. It is the most common type of radar ...
A pulse-Doppler radar is a radar system that determines the range to a target using pulse-timing techniques, and uses the Doppler effect of the returned signal to determine the target object's velocity.