The Chinese National Defense System
Guanyin is the code name for a number of coastal radar stations, which were built in China during the years after the Sino-Filipino war. The Guanyin stations are placed along the coast of China, including Formosa. Due to the Sino-Chosen-conflict, it was taken hurriedly in operation from the research station of the Air Ministry, thats the reason why not the complete coast is covered and only nine bastions are ready at the beginning of the hostilities. The system provided good services and so some of the enemy approaches could be detected early enough. Due to this success, the chinese leadership decided to expand this system.
Description:
Fixed long wave early warning aircraft detector.
Uses:
To establish a screen of warning which gives data on aircraft as early as possible, but with a sacrifice of accuracy in range, azimuth and elevation
Performance and Siting:
Maximum range on a single medium bomber flying at indicated altitudes, when set is on a flat sea level site:
Altitude, feet : 1000 / 5000 / 20000 / 25000
Range, miles : 45 / 80 / 135 / 180
Technical Data:
- Wavelength: 1,2m (250MHz)
- Power: 20 kW
- Pulse repetition frequency: 500 per second
- Pulsewidth 3µs
- Range: 150 - 200 km
- Azimuth: 360°