RAT 31SL
The RAT 31S is a radar family of the Italian Finmeccanica company SELEX Sistemi Integrati (now Leonardo SpA ). The abbreviation RAT stands for R adar A vvistamento T errestre, an Italian name for something like “down-to-earth reconnaissance radar”. Several different radar systems are built under this name, some of which are based on interchangeable assemblies and which cover several areas of activity.
The RAT 31 S is a fully coherent 3D early warning radar for both air defense and air traffic control purposes. It uses a phased array antenna , which generates several independently controlled pencil beams simultaneously with the flexibility required for air surveillance . The suffix SL stands for the now outdated designation of the frequency band S-Band (new: E-Band). The basic version uses linear horizontal polarization and achieves a range of more than 300 km with 135 kW pulse power from a transmitter output stage with a traveling wave tube .
The following letters in the name stand for
- RAT 31SL for long range,
- RAT 31S / C is a variant as a battlefield radar with a circular ( C = circular) polarization.
| Technical data RAT 31SL | |
|---|---|
| Frequency range | S-band |
| Pulse repetition time | |
| Pulse repetition frequency | (staggered) |
| Transmission time (PW) | |
| Reception time | |
| Dead time | |
| Pulse power | up to 155 kW |
| Average performance | |
| displayed distance | 450 km |
| Distance resolution | |
| Opening angle | 1.3 ... 1.5 ° |
| Hit count | 1… 3 |
| Antenna round trip time | 10s |