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　　Other names for DPS i1:

　　DGPS sensor DPS i1

　　DPS i1 DGLONASS sensor

　　Positioning system host DPS i1

　　The DPS i1 is a high-performance, cost-effective DGNSS (Differential Global Navigation Satellite System) sensor from the Norwegian company KONGSBERG, belonging to their mature DPS product series. This device is designed specifically for marine and near-shore applications, emphasizing high availability, reliability, and decimeter-level positioning accuracy, suitable for ship navigation, offshore platforms, and mission-critical scenarios.

　　Technical Specifications and Performance

　　Decimeter-Level Accuracy: Achieves 10cm (95% CEP) accuracy globally via Fugro Seastar G2 service, supporting GPS L1/L2, GLONASS L1/L2, and SBAS (such as WAAS, EGNOS) signals.

　　Global Coverage: Seastar SGG service provides orbit and clock bias correction, achieving sub-meter-level global positioning regardless of reference station distance.

　　Positioning Accuracy: <0.5 meters (standard configuration), achieving decimeter-level accuracy via Seastar G2 service, with high global consistency and unrestricted by reference station distance.

　　Satellite Systems: Supports GPS and GLONASS dual systems, expanding satellite coverage, improving signal availability and anti-interference capabilities, especially performing excellently in signal-obstructed environments (such as densely populated island areas, mountainous coastal areas).

　　Interfaces and Communication: Ethernet, USB, NMEA 0183/2000, PROFIBUS, Modbus; supports RTCM standard input; configurable external interface output; compatible with various control systems.

　　Multi-interface design: 3 serial ports (2 NMEA outputs, 1 RTCM input, supporting RS-232/RS-422 electrical isolation), Ethernet/LAN, USB (for software updates).

　　Data format: Compatible with NMEA 0183 v3.0 (GGA, GLL, GSA messages, etc.) and SNMP v2.0 alarm protocol.

　　Optional accessories: External display unit (supports customized graphical interface for DP operation), IALA beacon receiver.

　　Environmental adaptability: Operating temperature range -15°C to +55°C (device body), GNSS antenna withstands -40°C to +85°C, meets IP30 protection rating, suitable for harsh marine environments.

　　Redundancy design: Supports dual (DP Class 2) or triple redundancy (DP Class 3) architecture to ensure seamless switching in case of critical component failure and maintain continuous positioning capability.

　　Power supply: 110-240 V AC, 50-60 Hz, compatible with marine power systems.

　　Features

　　Calibration Service: Built-in L-band receiver, integrated Fugro Seastar SGG/G2 service, utilizes a dual-system reference station network to calculate "orbit and clock" calibration, providing globally consistent sub-meter/decimeter accuracy.

　　User Interface: Embedded keyboard and display, optional external display unit, supports a customized graphical interface for DP operation, intuitively displaying position, heading, sensor data, and diagnostic information.

　　Maintenance and Updates: Easy software updates via USB, supports regular sensor calibration (recommended annually) and performance checks, ensuring long-term reliability.

　　Compatibility: Compatible with Kongsberg K-Pos dynamic positioning systems (such as DP-21, DP-31), and can work in conjunction with the C-Joy joystick control system and K-Thrust thruster control system.

　　KONGSBERG DGNSS Sensor Core Models and Technical Parameters

　　DPS Series:

　　DPS i1: An economical DGNSS sensor supporting GPS L1/L2, GLONASS L1/L2, and SBAS (such as WAAS, EGNOS). Achieves decimeter-level accuracy (10cm CEP) globally via Fugro Seastar G2 service. Features 3 serial ports, Ethernet/LAN, and USB interfaces, compatible with NMEA 0183 v3.0 and SNMP v2.0 protocols. Main unit dimensions: 89mm × 444mm × 357mm, weight: 5.8kg, operating temperature: -15°C to +55°C, IP67 protection rating.

　　DPS132/232/700/4D: High-end models replacing the DPS i1, integrating IMU, expanding DP functionality, supporting higher accuracy (such as sub-millimeter level) and multi-satellite system fusion, suitable for complex marine environments and critical mission scenarios.

　　GT Series:

　　GT300/GT402/GT403: Supports DC 10V-15V power supply, power consumption 0.25W, static accuracy horizontal ±(2.5mm+1ppm), vertical ±(5mm+1ppm). Employs choke coil antennas and magnetic absorbing materials to reduce multipath effects. Supports Modbus-RTU protocol and RTCM3 differential data. Operating environment -40°C to +85°C. Dimensions: Diameter 360mm × Height 163mm.

　　Application Scenarios

　　Ships Navigation: High-precision navigation for merchant ships, cargo ships, fishing vessels, and yachts in complex waters (such as straits, ports, and coastal waters) to ensure navigational safety.

　　Offshore Operations: Precise positioning of oil drilling platforms, FPSOs (Floating Production Storage and Offloading) vessels, and exploration vessels; precision operations for underwater pipeline laying, submarine cable repair, and marine geological exploration.

　　Specialty Vessels: Precise maneuvering of research vessels, icebreakers, rescue vessels, and ferries in narrow waterways or specific sea areas. Marine Engineering: Offshore wind farm construction, tidal energy facility maintenance, and support for wind turbine component installation and cable laying.

　　Special Environments: Areas with severe signal obstruction, such as densely populated island areas and mountainous coastal regions, utilize a multi-satellite system (GPS+GLONASS) to enhance signal coverage and anti-interference capabilities.

　　Comparison and Advantages

　　Comparison with Traditional DGPS: Adding GLONASS expands satellite coverage and improves system availability, especially in challenging signal environments (such as high obstruction and multipath interference).

　　Superior to Regional SBAS: Seastar SGG/G2 service, based on the Fugro dual-system network, provides globally consistent accuracy, superior to regional SBAS services such as WAAS and EGNOS, and IALA DGPS local service.

　　Safety Certifications: Certified by DNV, Lloyd’s Register, ABS, and IMO DP Class 2/3, meeting offshore operation safety standards and suitable for mission-critical scenarios.

　　Installation and Maintenance

　　Installation Requirements: An assessment of the ship's structure and electrical system is necessary to ensure that sensor installation locations (GPS antenna, beacon, gyrocompass, etc.) avoid signal obstruction and interference; power supply and communication cabling must comply with maritime safety standards.

　　Maintenance Recommendations: Regularly calibrate sensors and check the condition of antennas and connectors to ensure long-term stable system operation; software updates are performed via USB interface, making operation simple.

　　The DPS i1, with its high precision, high reliability, and flexible configuration, has become an ideal positioning solution for professional vessels, offshore platforms, and marine engineering, especially excelling in scenarios requiring high safety and continuous positioning capabilities.