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In June 1936, the NRL's first prototype radar system, now operating at 28.6 MHz, was demonstrated to government officials, successfully tracking an aircraft at distances up to 25 miles (40 km). Their radar was based on low frequency signals, at least by today's standards, and thus required large antennas , making it impractical for ship or ...
Radar coverage along the UK coast, 1939–1940. By 1937, the first three stations were ready, and the associated system was put to the test. The results were encouraging, and the government immediately commissioned construction of 17 additional stations. This became Chain Home, the array of fixed radar towers on the east and south coasts of ...
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.
Weather radar in Norman, Oklahoma with rainshaft Weather (WF44) radar dish University of Oklahoma OU-PRIME C-band, polarimetric, weather radar during construction. Weather radar, also called weather surveillance radar (WSR) and Doppler weather radar, is a type of radar used to locate precipitation, calculate its motion, and estimate its type (rain, snow, hail etc.).
At the 2002 EUSAR Conference in Cologne, the keynote speech was "Hülsmeyer – The Inventor of Radar." [12] During a radar conference held in Frankfurt in 1953, Hülsmeyer and Robert Watson-Watt were honored guests. (Watson-Watt had been a leader of radar technology development in Great Britain, and received a patent on the system in 1935).
V1 Gen2 Radar Detector. A massive upgrade from the first-gen Valentine, the V1 Gen2 features an all-new magnesium case. This patented radar-seeking engine is adapted from a concept used by ...
The system, Japan's first full radar, was designated Mark 1 Model 1. (This type of designation is shortened herein to the numbers only; e.g., Type 11.) The system operated at 3.0 m (100 MHz) with a peak-power of 40 kW. Dipole arrays with mat-type reflectors were used in separate antennas for transmitting and receiving.
They conducted several tests, but Orville made the first flight at 10:35 a.m., lasting 12 seconds and traveling 120 feet. Wilbur flew it the longest that day for 59 seconds and across 852 feet.