NRS for Navy МR-231-3

Navigational radar station MR-212/201-1M.
Meet requirements of military standards of Russia.
Performance characteristics:
- Two antennas (parabolic or slot) interfaced with friend-or-foe identification antennas ensure circular scanning in the developed superstructure conditions of the ship.
Display of the generalized data of own ship:
- geographical coordinates;
- route, speed;
- depth under keel;
- zone time.
- Interscanning accumulation.
- Emission inhibit mode.
- Image orientation to “HEAD-UP”, “NORTH”, “COURSE-UP”, modes RM and TM with off-centering within 2/3 image radius.
- Targets position data measuring instruments:
• VRM and EBL;
• electronic ruler;
• position mark.
- Automatic detection and audible alarm of targets in the guard zone.
- Trails of targets past positions and true motion with adjustable time of its duration.
- Autotracking of up to 50 targets with indication of their motion parameters and CPA with collision avoidance warning and safe passing trials maneuver (ARPA).
- ARPA data output to the marine electronic chart display system.
- Image and graphic data stabilization relative to the ground and water.
- Electronic chart and voyage data monitoring.
- Anchorage control.
- Joint operation with ship's systems including Friend-or-Foe identification.
Technical characteristics for NRS MR-231-3 and MR-212/201-1М:
Antenna type – parabolic or slot waveguide.
Beam width, degree:
- in horizontal plane 0,8±0,1; 1,1±0,1; - in vertical place 20±2,0.
• Gain, 30dB.
• Horizontal polarization.
• Side lobes, dB minus 25.
• Antenna frequency, 15±1rpm.
• Transmitter unit.
• Carrier frequency, 9410MHz.
• Pulse voltage, 10kW.
• Pulse length, 0,06; 0,35; 0,8µs.
• Repetition frequency, 2800-1400-700 pulse per second.
• Receiver.
• Intermediate frequency, 60MHz.
• Band width, 20 and 4MHz.
Pulse sensitive, minus dB/W:
- in mode “short pulse” 127; - in mode “long pulse” 132.
• Amplitude characteristics linear-logarithmic.
• Automatic frequency control of heterodyne AFC, MFC.
• Indicator.
• Effective diameter of radar image, 270mm.
• Zone of range scale, 0,125; 0,25; 0,5; 0,75; 1,5; 3,0; 6,0; 12,0; 24,0;48,0;96 miles.
• Bearing discrimination 1,4.
• Range discrimination 25m.
• Maximum bearing measurement error 0,5.
• Maximum permissible error of the electronic instruments of bearing measuring is 0,8.
• Maximum range measurement error 25m or 0,8% from range scale in use.
• Scaling up of the selected image area with its separate display in the additional display field.
• Resolution 1280х1024.
• Mass of NRS devices with two indicators, at most 800kg.
• Power supply.
• Airborne mains power 3ph., 50Hz, 220/380V.
Configuration:
• NRS might include up to 6 indicators.
• Interfacing with ships' systems.