Receiver

Among other things, this tab is used to configure the operational parameters for the receiver.

Note: The options presented within this dialog box are receiver specific and will vary.

• Antenna Type: A comprehensive list of NGS supported antennas is available for selection. The most appropriate antenna will be pre-selected based on the receiver and will not generally need to be changed.
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  To select an alternate antenna or change the offset parameters, press the Antenna List button and search the list by manufacturer:

  

  • Manufacturer: Indicate the desired manufacturer of the antenna.
  • Part Number: Indicate the particular antenna model of interest.
  • Description: Displays a generic description of the antenna model
  • Radius: Indicate the horizontal distance from the center of the receiver to the slant height measurement point (SHMP).
  • SHMP Offset: Indicate the vertical slant height measurement point offset from the antenna reference point (ARP) (commonly the lowest non-removable point of the antenna).
  • L1 & L2: Summarizes the Antenna Phase Center offsets for L1 and L2 frequencies.
  • L1 and L2 Offsets: This button permits the customization for user-defined antennas:

    

    • Use Absolute Offsets: Indicate the appropriate L1/L2 absolute calibration offsets.
    • Use Relative Offsets: Indicate the appropriate L1/L2 relative calibration offsets.
  • New: Permits the creation of a new user-defined antenna definition.
  • Save: Saves the current user-defined antenna definition.
  • Copy: Permits the currently selected antenna definition to be copied to a new user-defined entry.
  • Delete: Permanently removes the selected user-defined antenna.
• Antenna Height: Entered as either Vertical height (commonly to the antenna reference point [ARP]) or Slant height (commonly to the slant height measurement point [SHMP]).
• Elevation Mask: This specifies the cutoff vertical angle above the horizon. Any satellites below this angle will be left out of calculations. It's effect can be seen in Monitor/Skyplot - SATView.
• Position Rate: This option allows the user to set the position update rate for the GNSS readings. 1 Hz will display one reading per second, while 5 Hz is five readings per second.
• aRTK: When enabled, the receiver will utilize Atlas^™ (L-band) corrections with a valid service subscription.
• Datum Transform for LBand: Atlas positions are referenced to ITRF08 current epoch. Use this button to establish datum transformation parameters to other reference systems (e.g. NAD83, ETRS89, etc).
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  In an effort to provide compatibility between the evolving International Terrestrial Reference Frame (ITRF) and other established reference systems, transformation parameters can be established to convert ITRF readings.

  Use the Transformation tab to review/set values related to the target datum:

  

  Use the Rates tab to review/set values related to the amount(s) of positional changes on a yearly basis.

  

  Use the Calc tab to check the values between ITRF and your selected reference system

  

• Advanced: This option provides additional configuration options for the receiver.
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  The following are common advanced options for GPS Rover:

  

  • Log Raw Data to Receiver: When enabled, GNSS measurements will be stored to the available memory of the GNSS receiver so that it can be retrieved and analyzed later (commonly for stop-and-go post-processing). See also GPS Raw Only.
  • Readings Per Point: Indicate the number of measurements to collect per point.
  • Enable SureFix:^™ When enabled for receivers that support it, SureFix can help achieve repeatability in challenging GNSS environments.
  • Audio Mode: For receivers that support audio notifications, indicate if audio is desired.
  • Send file after config: When enabled, receiver-specific command instructions can be sent to the receiver after the SurvPC configuration process has been completed.
  • Configure NMEA Output: Use this option to instruct the receiver to also send NMEA sentences to alternate locations (commonly used for third-party application consumption).

    

    • Log to file: When enabled, configured NMEA sentences are written to a user-defined file.
    • Extended Precision (GGA Only): When enabled, additional precision for GGA sentences is written.
    • Log to DC Port: When enabled, configured NMEA sentences are written to a specified communication port on the data collector (controller). This is commonly used when a third party-device is connected to the controller.
    • Log to receiver port: When enabled, configured NMEA sentences are written to a specified communication port on the GNSS receiver. This is commonly used when a third party-device is connected to the receiver.
    • NMEA Sentences: Tap this button to indicate the type(s) of NMEA sentences that are to be conveyed and the rate they are to be sent:
      

      

      • GGA: Global Positioning System Fix Data
      • RMC: Position, Velocity, and Time
      • GSA: GPS DOP and active satellites
      • LLQ: Leica local position and quality
      • GLL: Geodetic Position - Latitude/Longitude
      • GSV: Number of SVs in view, PRN, elevation, azimuth, and SNR
      • ZDA: UTC Time and Date
      • LLK: Leica Local Position and GDOP
  • Configure Constellations: Use this option to enable/disable GNSS constellations (e.g. GPS, SBAS, BeiDou, GLONASS, Galileo, etc).
    

    

  • Space Weather Warning: (not shown) For receivers that support it (e.g. Carlson Gama^™ RTK engine) and when configured, a pop-up warning will be issued when solar activity exceeds the warning threshold.

Note: It is recommended to go left to right through the tabs, from Current to Comms to Receiver to RTK, to ensure that all settings are correct, especially when configuring a new receiver for the first time.