Gemini-DB
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DIGITAL DUAL BAND ARPA RADAR SYSTEM

GEM elettronica digital dual band GEMINI-DB ARPA radar system oers the operational advantages associated with simultaneous use of X and Ka separate frequencies while remaining compact and exible in operation. GEMINI-DB can be used in configuring stand-alone or integrated into other systems: GEMINI-DB combines simultaneously X and Ka frequencies to allow coverage of surveillance area using both frequencies. - Navigation stand-alone marine ARPA radar or interfaced with integrated Bridge Systems - SMGCS (Surface Movement Guidance and Control Systems) for the ground control - “Gap-Filler” radar...

Advanced Fully Solid State Digital Radar sensor Mai n featu res : • Frequency Diversity • Accurate target detection • Coherent, pulse compression, Doppler, digital signal processing, clutter rejection • Active and Passive Built-In-Test (BIT) for immediate fault localization in support of all-level maintenance activities • LPI mode with user-selectable transmitter power level (option) X-band not able to separate targets properly special operations: Highly-discriminating digital K a -band radar sensor Th e Ka-band allows super-directive excellent - Narrow waterways - Port Approach Control...

Digital filters configuration - Video Intensifier - Interference Rejection - False Alarm Reduction - Echo Stretch - Compression type Parallel index parallel index lines (PI) to be used to set a flexible range and bearing reference to own ship. Parallel index lines are index lines which are parallel to own ship heading Automatic acquisition inhibi- tion zone Radar display settings - Scale - Rings distance - Display Source: Radar or Simulation - Radar image orientation - Motion - Stabilization source - Stabilization: sea, ground - Selected video - Antenna type - Pulse Navigation Channel...

Video channel Filter status - Tune and tune control - Gain control Current setup ' '', TRAIL TRUE ALARM COLL. AUTO ACQU CURRENT SETUP AIS/ARPA SETUP AIS/ARPA Setup The System provides a function that correlates ARPA and AIS targets based upon a correlation algorithm that takes into account distance between the two targets. Ownship data - Latitude and data source - Longitude and data source - Absolute speed and data source - Course and data source - Heading and data source - Speed and data source - Drift speed and data source - Drift course and data source OWNSHIP DATA Alarms window In this...

ANTENNAS AND ROTATING UNIT X 9 feet horizontally polarized ≤ 0.85° < 25° Length Slotted waveguide array Horizontal beamwidth to -3dB Vertical beamwidth to -3dB Sidelobes within 10° Sidelobes outside 10° Gain Rotation speed Tolerable relative wind speed less than - 26 dB less than - 30 dB 31 dBi ± 0.5 dB 40 dBic ± 0.5 dB 22/11 rpm (depending on range selected) 100 knots (operative) - 120 Knots (non operative) Ka TRANSMITTERS Peak power (nominal) Frequency 50, 100, 200, 400 W (Fully Solid State) between 9,300 and 9,500 MHz Pulse widths and PRFs: from 0.05 to 93 μs; from 350 to 2500 Hz...

OUTLINE DRAWINGS - all dimensions are in mm Antenna system X-band Downmast transceiver Power supply and processing rack Table-top mounting Panel mounting X-Ka BAND RADAR SENSOR WR-90 WAVEGUIDE POWER SUPPLY / CONTROL SIGNALS POWER SUPPLY / VIDEO, KEYBOARD SIGNALS NAVIGATION SENSORS POWER SUPPLY 115 Vac (option 220 Vac), 50Hz KEYBOARD SIGNALS Antenna Supply Unit Radar Processing Unit Interswitch Unit UPS

Port security Navigation marine This brochure should not be considered a contractual offer to sell. The specifications given herein may be changed by the manufacturer, GEM elettronica S.r.l., without notice. marketing@gemrad.com - www.gemrad.com