ARSR-3
Description of the radar set, tactical-technical characteristics
Figure 1: ARSR-3
| Specifications | |
|---|---|
| frequency: | 1 250 … 1 350 MHz
(L-Band) |
| pulse repetition time (PRT): | |
| pulse repetition frequency (PRF): | 310 … 365 Hz |
| pulsewidth (τ): | 2 µs |
| receiving time: | |
| dead time: | |
| peak power: | 5 MW |
| average power: | 3.3 kW |
| instrumented range: | 240 NM (≙ 445 km) |
| range resolution: | 450 m |
| accuracy: | |
| beamwidth: | 1.1° |
| hits per scan: | |
| antenna rotation: | 5 min⁻¹ |
| MTBCF: | |
| MTTR: | |
ARSR-3
ARSR-3 is operating in the L-Band long-range air surveillance radar. It was used to detect azimuth and range of en-route aircraft operating between FAA terminal areas.
ARSR-3 is a dual channel radar with two separate transmitter with each a powerful klystron, receiver and signal-processing channels utilizing adjacent frequencies. A minimum frequency separation of 25 MHz and orthogonal polarization prevents co-interference. The common radar data processing is done by using an 8-bit processor. The reflector antenna provides a cosecant squared beam shaping. It also allows improved high-elevation short-range cover by using two horns for high- and low beam. In addition, the ARSR-3 has a weather channel with associated processing to provide weather contour information in digital format.
The first installation took place at the FAA Aeronautical Center in Oklahoma City in July 1978. ARSR-3 was replaced by the 3D- radar ARSR-4 since the 1990s.