Type 381 Radar

The Type 381 was one of the first Chinese naval 3D search radar employing FRESCAN (Frequency Scanning) technique. Initial versions were deployed on Jiangdong class FFG and Luda command variant class to provide long range surface search. It bears resemblance to the Russian radar Fregat.

Specifications

 * Beam: 2.7° &times; 1.4°
 * Peak power: 150 kW
 * Pulse width: (original, 40), (Type A, 20), compressed to 1 microsecond
 * PRF: (original, 370), (Type A, 730) average power of 2.2 kW
 * Scan rate: 5 rpm
 * Other features:
 * Claimed able to track 10 targets simultaneously.
 * Uses TWT+CFA coherent chain transmitter
 * Reception is coherent with MTI improvement factor of 30 dBm
 * Uses serpentine/waveguide

External references

 * China Shipbuilding Industry Corporation
 * Nanjing Marine Radar Research Institute