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AN/CPS-1

Description of the radar set, tactical-technical characteristics Описание; Основные тактико-технические характеристики (Базы данных)

Figure 1: AN/CPS-1

Figure 1: AN/CPS-1

Specifications
frequency: 3 200 MHz (S-Band)
pulse repetition time (PRT):  
pulse repetition frequency (PRF):  
pulsewidth (τ):  
receive time:  
dead time:  
peak power: (700 kW ? )
average power:  
instrumented range: 200 miles (≙ 322 km)
range resolution:  
accuracy:  
beamwidth: 0.8°
hits per scan:  
antenna rotation: 10 rpm
MTBCF:  
MTTR:  

AN/CPS-1

AN/CPS-1 alias Microwave Early Warning (MEW) radar, was built at the end of the Second World War and operated in S-Band. This frequency band removed two serious problems of meter-wave air-warning sets: their poor angular resolution of targets and their blindness for low-flying aircraft. In providing excellent 0.8° horizontal location it relinquished any knowledge of height, which proved to be no disadvantage in guiding fighters and alerting gun crews against the uniformly low-flying V-1 flying bombs. A very narrow vertical fan-shaped beam was attained through a linear array of 106 slots cut into a waveguide across the focal line of a cylindrical parabolic reflector. A refector that would secure good low-level coverage at long ranges would not form a beam tall enough vertically for near-in targets that were high, so there was a second antenna for high coverage, the two mounted back to back. Each reflector was 7.6 meters (25 feet) wide. The low-coverage reflector was 2.4 meters (7 feet 10 inches) tall, while the high-coverage reflector was 1.5 meters (4 feet 11 inches) tall. The MEW control electronics included five 30-centimeter (1-foot) scope displays, allowing operators to track large numbers of targets.

Only six handcrafted sets were made. Set number one operated in Britain January 1944.

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Figure 2: Description of the antenna