Description of the radar set, tactical-technical characteristics
Figure 1: AN/SPN-43 air traffic control radar on USS Enterprise (CVN-65)
|frequency:||3 500 … 3 700 MHz
|pulse repetition time (PRT):||1000 µs|
|pulse repetition frequency (PRF):|
|pulsewidth (τ):||0.95 (±0.05) µs|
|peak power:||1 MW|
|average power:||1 kW|
|instrumented range:||50 NM (≙ 93 km)|
|hits per scan:|
|antenna rotation:||15 rpm|
AN/SPN-43 is an S-Band 2D ATC-radar used on carriers and amphibious-type ships. It provides air navigational data (azimuth and range information) for control and identification of aircraft from 50 miles to a minimum range of 250 yards at altitudes from radar horizon to 30,000 feet (9,144 m). Special indicators in the Carrier Air Traffic Control Center enable operators to direct aircraft along a predetermined azimuth to a point approximately one-quarter mile from touchdown.
The AN/SPN-43 utilizes a 120" × 80" reflector antenna with cosecant squared pattern fed by a horn antenna. The polarisation is switchable linear horizontal or left-hand circular. It is a coherent on receive radar system with a pulsed magnetron transmitter. The bandwidth of the transmitted signal is 1.6 MHz.
The AN/SPN-43 will be replaced by SAABs AN/SPN-50(V)1 Shipboard Air Traffic Radar.