Description of the radar set, tactical-technical characteristics
Figure 1: AN/TPN-18A GCA radar system (1991)
|frequency:||9.0 … 9.6 GHz
|pulse repetition time (PRT):|
|pulse repetition frequency (PRF):||1 200 Hz|
|pulsewidth (τ):||0.2 or 0.8 µs|
|peak power:||200 kW|
|instrumented range:||40 NM (≙ 74 km)|
|Azimuth beam:||1.3º (horizontal); 3.5º (vertical)|
|Elevation beam:||1.1º (vertical); 3.4º (horizontal)|
|hits per scan:|
|antenna rotation:||16 rpm|
The Radar Set AN/TPN-18 is an X-Band lightweight, helicoptertransportable aircraft traffic control and landing approach radar set which provides precise three-function information to airport/heliport controllers. These functions consist of terminal area surveillance, precision approach for control of landings, and heightfinding for aircraft monitoring.
AN/TPN-18 is a component of landing control central AN/TSQ-71 and AN/TSQ-72. It is designed for use during all weather conditions at forward airstrips and heliports.
The predesessor of the AN/TPN-18 was the AN/TPN-8. The antenna group looked exactly the same – the radar electronic differed. The AN/TPN-8 was also used as a developmental base for the AN/SPN-35 later used on aircraft carriers. Radar sets AN/TPN-8 were still in use by the mid-70s. Later they had all been upgraded to AN/TPN-18.