title: YLC-4 Radar
text: # YLC-4 Radar
  
  YLC-4 is a Chinese UHF solid-state, fully coherent 2D long range surveillance radar, which is mainly used for long range surveillance. The radar has the ability to synthesize data from up to four other radars with a large data capacity, and to communicate and display the data and state of the system through the net to realize remote control and detection. When equipped with height-finding radar, it can perform the function of guidance and providing target data for an air traffic control system. With long range detection range, high reliability and easy maintenance, YLC-4 radar is a main radar in air defense network. The manufacturer of the system is Nanjing Research Institute of Electronics Technology (NRIET)/Nanjing Institute No. 1 /南京电子技术研究所.
  
  ## Design
  
  The YLC-4 system consist of four components: the antenna, the signal cabin, transmitter and the power generators (2 x 120 kW diesel generators).
  
  ## Specifications
  
  * Frequency range: P band
  * Range (at σ= 2 $m^2$ and $Pf=10^{−6}):$
     * Rmax: 410 km (Pd=0.5)
     * Rmax: 380 km (Pd=0.8)
  * Coverage:
     * Azimuth: 0° < 360°
     * Elevation: 0° < 25°
  * Reliability
     * MTBFC: => 500 hours
     * MTTR: <=0.5 hours
  * Other features:
  * Super cosecant square beam in elevation
  * Solid-state, full coherent, pulse compression and AMTI technology, DMTI adaptive system
  * Employing various frequency agilities and low sidelobe antenna (< -30 dB), dynamic factor => 45 dB
  