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Ground speed radar is a non-mechanical way of measuring the speed of a vehicle. The Speed sensor fires a radar beam towards the ground and measures the Doppler shift of the returning beam. [ 1 ] This information is then sent to the engine control unit which calculates the forward speed.
Ground-penetrating radar (GPR) is a geophysical method that uses radar pulses to image the subsurface. It is a non-intrusive method of surveying the sub-surface to investigate underground utilities such as concrete, asphalt, metals, pipes, cables or masonry. [ 1 ]
AN/MPN-1 ground control radar; AN/MPN-2 ground control radar; AN/MPN-3 ground control radar; AN/MPN-5 ground control radar; AN/MPN-11 ground control radar; AN/MPN-13/14 ground control radar; AN/MPN-26 ground control radar; AN/MPQ-4 Counter-mortar (Firefinder) Radar (replaced by AN/TPQ-36 & AN/TPQ-37) AN/MPQ-14
The radar measures the distance to the reflector by measuring the time of the round trip from emission of a pulse to reception, dividing this by two, and then multiplying by the speed of light. To be accepted, the received pulse has to lie within a period of time called the range gate .
Radar is a system that uses radio waves to determine the distance (), direction (azimuth and elevation angles), and radial velocity of objects relative to the site. It is a radiodetermination method [1] used to detect and track aircraft, ships, spacecraft, guided missiles, motor vehicles, map weather formations, and terrain.
AN/APN-81 Doppler radar navigation system, mid-1950s. Doppler radar tends to be lightweight because it eliminates heavy pulse hardware. The associated filtering removes stationary reflections while integrating signals over a longer time span, which improves range performance while reducing power. The military applied these advantages during the ...
The AN/TPS-43 is a ground-based, non-fixed (i.e.: transportable) search radar. [ n 1 ] [ 1 ] The entire system can be broken down and packed into two M35 trucks for road transport. An updated version replacing the original shaped reflector and organ-pipe scanner with a phased array antenna was originally known as the TPS-43E2, but emerged as a ...
Ground targets further than this range cannot be detected, so the PRF can be quite high; a radar with a PRF of 7.5 kHz will return ambiguous echoes from targets at about 20 km, or over the horizon. If however, the PRF was doubled to 15 kHz, then the ambiguous range is reduced to 10 km and targets beyond this range would only appear on the ...