1L117
Description of the radar set, tactical-technical characteristics
Figure 1: 1L117
| Specifications | |
|---|---|
| frequency: | 2 695 … 3 115 MHz
(S-Band) |
| pulse repetition time (PRT): | |
| pulse repetition frequency (PRF): | 375 or 750 Hz |
| pulsewidth (τ): | 1.2 µs |
| receiving time: | |
| dead time: | |
| peak power: | 5 × 700 kW |
| average power: | |
| instrumented range: | 450 km |
| range resolution: | 125 m |
| accuracy: | |
| beamwidth: | 1° |
| hits per scan: | |
| antenna rotation: | 6 or 12 min⁻¹ |
| MTBCF: | 350 hrs |
| MTTR: | |
1L117
1L117 (NATO designator: „Big Bar”) is operating in the S-Band long range 3-D air surveillance radar. It is a further development or a modification of the P-37 „Bar Lock” in the transistorized version of 1990.
While retaining the essential advantages of the P-37 radar systems, such as low price, reliability, simplicity and ease of operation, the system has been given new properties and improved technical data. A visual distinguishing feature is the upper antenna, which is turned clockwise by approximately 45°. This V-Beam method enables the height to be determined in the plotextractor which can automatically detect up to 200 targets.
The modification 1L117M uses a klystron as a transmitter output stage in contrast to its predecessor model (five magnetron transmitters). Thus this version became a fully coherent radar. Improvements include a more stable output signal and a higher subclutter visibility of 45 dB (instead of 25 dB).
Source:
- Manufacturers Leaflet