DRS 500/IMS 500

DRS 500 and IMS 500 are the third generation DGNSS reference products from Kongsberg Seatex. The products feature a new graphical user interface for real time operation and system control. The new Human Machine Interface (HMI) is optimised for easy identification of, and fast operator response to events. The DRS 500 and IMS 500 are fitted with a state-of-the art GNSS receiver supporting future signals in space.

DGNSS Network Integration

In a DGNSS network infrastructure, the DRS 500 and the IMS 500 are integrated enabling both pre and post integrity control. A Central Monitor application (DGNSS CM) enables full remote operation of all stations in a network.

DRS 500

The DRS 500 is a DGNSS reference station designed for permanent installation as a stand-alone system or as part of regional GNSS infrastructure systems. The DRS 500 generates differential GNSS (DGNSS) corrections. Raw pseudo-range observations and other pertinent data from the GNSS receiver are used to calculate optimal sets of corrections at every measurement cycle. The DRS 500 offers data integrity, check and quality control of each individual GNSS satellite. The data quality control algorithms implemented in the DRS 500 will detect errors not detected by the GNSS receiver itself.

IMS 500

The IMS 500 is a DGNSS integrity monitor station designed for permanent installation as a stand-alonesystem or as a part of regional GNSS infrastructure systems. The IMS 500 is a module for reception and monitoring of differential GNSS (DGNSS) corrections. The RTCM data will be checked for availability, position accuracy and other quality criteria. Alarms and warnings will be displayed and stored in an alarm file. Based on predefined fault criteria, the IMS 500 will switch between the two DRS 500 units in a redundant configuration

Key features

  • Compliant with RTCM SC-104 ver. 2.3, RSIM ver. 1.2, IALA recommendation R-121, IALA guideline no. 1112
  • Standard GPS corrections: RTCM type 1, 3, 7, 9, 16, 27
  • GLONASS corrections: RTCM type 31, 32, 34, 35 (optional)
  • Storage of raw data for post-processing
  • Storage of alarms and configuration changes
  • Pre, post and combined pre and post broadcast integrity mode
  • Full remote control by direct or dial-up connection via CM
  • Three user levels for operator functionality control
  • HMI-based status monitoring including:
  • - 2D position plot and graph
  • - Transmitter status
  • - Signal status bars and graphs
  • - Active alarms
  • - Module mimic diagram
  • - Satellite status
  • - Correction data status
  • - RTCM status and message type details
  • HMI-based configuration including:
  • - Alarm threshold and observation interval settings
  • - RTCM and RSIM message scheduling
  • - GNSS receiver parameter configuration and resets
  • - Modulator configuration
  • - Transmitter configuration
  • - Broadcast integrity mode configuration

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