Carlson SurveyGNSSSimple, yet powerful data post-processing with Carlson SurveyGNSS

Carlson SurveyGNSS post-processing software is a reliable and precise tool for all post-processing applications and is tightly integrated into the Carlson field and office workflow. See Features below for recent improvements. Carlson SurveyGNSS allows users to:

  • Achieve high accuracy results in areas with limited or no real-time corrections
  • Import GNSS observations from any GNSS receiver in RINEX format
  • Accept GNSS observations in a variety of proprietary formats
  • Get intuitive user interface with tables, maps and graphs
  • Improve the quality of single frequency GIS data
  • Interact efficiently with Carlson SurvCE, SurvPC and Carlson office software
  • Do quality control of GNSS data before export to Survey or GIS software

In keeping with the Carlson hallmark of interoperability with the greatest amount of GNSS hardware, SurveyGNSS is designed to accept GNSS data from any receiver in RINEX format. Furthermore, it will also accept proprietary GNSS data in an increasing number of manufacturer formats including NovAtel, Hemisphere GNSS, Altus/Septentrio, and Javad. Additional manufacturer formats will be added in concert with manufacturer cooperation and customer demand.

Carlson SurveyGNSS is developed in partnership with WaSoft of Dresden, Germany, and its proven line of GNSS software technologies.

Ask a QuestionFree Trial – Find a Dealer
More Land Surveying Products


System Requirements


Carlson SurveyGNSS User Guide

Get the most out of your GNSS Data

For  surveyors and positioning professionals looking to achieve centimeter accuracy when working on the edge of their RTK infrastructure, perform sub-centimeter positioning, and/or provide the highest quality assurance to their customers, Carlson Software has developed the all new Carlson SurveyGNSS post-processing program.

Highlights in Carlson SurveyGNSS version 2.1.3:

  • SurveyGNSS now supports Precise Point Positioning (PPP) as a separate module. Raw data from any single or dual frequency phase data receiver can be used for PPP processing. There is no need for a base or reference network; the receiver can log data autonomously.
  • PPP is a static technique; a station must be occupied for at least 2 hours. The longer the observation time, the better. Depending on the quality of the raw data, the occupied station can be positioned with sub-metre, decimetre, or even centimetre accuracy.
  • PPP is useful when there is a need to establish one or more known points in an area with no fixed reference station or network.
  • Note that the PPP result is not defined on the local datum (NAD83, ETRS89, AGD84) but on the International Terrestrial Reference Frame. To obtain a reliable local Latitude, Longitude and Elevation (and eventually E,N,H) a transformation must be applied.

Complete Carlson SurveyGNSS 2016 v 213 Release Notes

Highlights in Carlson SurveyGNSS version 2.1.2:

  • Added support for RINEX 3.02 allowing the .RNX file extension
  • Added GLONASS post-processing support (interfrequency biases) for receiver brands: Spectra Precision (SP80), Stonex and Satlab
  • Support for a new online reference network; UNAVCO active reference networks
  • Added new map display to show all available stations for the selected reference network

Complete Carlson SurveyGNSS 2016 v 212 Release Notes

Highlights in Carlson SurveyGNSS version 2.1.1:

  • Added support for RINEX 3.02 allowing the .RNX file extension
  • Added GLONASS post-processing support (interfrequency biases) for receiver brands: Spectra Precision (SP80), Stonex and Satlab
  • Support for a new online reference network; UNAVCO active reference networks
  • Added new map display to show all available stations for the selected reference network

Complete Carlson SurveyGNSS 2016 v 211 Release Notes

Highlights in Carlson SurveyGNSS version 2.1.0:

  • SurveyGNSS now supports project templates. Users no longer have to select their coordinate system everytime SurveyGNSS is started, but can simply load a template file. The project template includes the coordinate system and any other SurveyGNSS project data.
  • SurveyGNSS now supports projection factors. This allows for ‘grid to ground’ computations. The GNSS-derived positions in SurveyGNSS are scaled to localized “ground” coordinates so that any inverse between them results in an approximate ‘Ground Distance’. These scaled distances can then be combined with Total Station observations.
  • SurveyGNSS now supports projection localization. A four parameter (scale, rotation, shift) 2D similarity transformation to projected coordinates can be defined using corresponding positions. This results in localized horizontal E,N coordinates.
  • SurveyGNSS now supports online geoid models. When online, users may select a geoid model directly from the geoids library published by Carlson. Geoid support has also been extended to the (textual) “.asc” format offered by the US National Geodetic Survey.
  • SurveyGNSS now supports antenna height input in Meters for projects with a coordinate system in Feet. This makes it easier to enter a typical 2 Meter antenna height while the rest of the data is in Feet.

Complete Carlson SurveyGNSS 2016 v 210 Release Notes

Highlights in Carlson SurveyGNSS version 2.0.1:

  • SurveyGNSS now also works offline. Typical online functionality (downloading reference station data,
    background map) will not be available. Vector processing is available, as well as GNSS Resection(s) and
    Virtual Reference Station(s).
  • Virtual Reference Station(s) now also work with static data and not just with Stop&Go data.
    SurveyGNSS will calculate a virtual station close to the rover position, providing that proper CORS
    reference data is available. This results in a shorter baseline and shorter baselines means shorter
    observation times.
  • The SurveyGNSS Network Adjustment now exports .GPS vector files for processing in Carlson SurvNet.
    This makes it possible to combine SurveyGNSS vectors with Total Station and leveling data in a single
    least squares adjustment.

Highlights in Carlson SurveyGNSS version 1.0.4:

  • More receiver raw data formats are supported. The list of supported formats for import is now: RINEX, Carlson, Hemisphere, Javad, Leica, NVS, Novatel, Sokkia, Topcon, Trimble and ublox.
  • Command line RINEX utility: prospective users now have the ability to incorporate their own (proprietary) command line RINEX utilities directly into the product to support almost any GNSS manufacturer.
  • Improved Positions and Map symbolization: SurveyGNSS now includes improved graphics with redesigned solution symbols and stop&go trajectory views.
  • Seamless integration with SurvCE 4.0 RW5 files for raw data logging.
  • Support for the Carlson BRx5. Full support of the new Carlson BRx5 receiver including Glonass inter-channel biases for an even more accurate solution.
  • Support for underlying system configured proxies providing indirect public HTTP, FTP and ICMP communication protocols.
  • Improved GNSS L1-only processing performance.
  • New languages added: French, Hungarian, Spanish, Russian.

Standard Features:

  • Supports differential post-processing of RINEX GNSS observations in static, ‘stop and go’ and kinematic positioning modes
  • Accepts GNSS observations from any GNSS receiver in RINEX format
  • Accepts proprietary GNSS observations in the following formats:
      • Carlson .log and .rw5
      • NovAtel .log
      • Hemisphere GNSS .bin
      • Altus .sbf
      • Javad .bin
      • Additional proprietary manufacturer file formats will be added based on manufacturer cooperation and/or customer demand
  • Provides a straightforward, workflow-oriented user interface including an overview map and observation files, computed vectors, and positions presented in fully functional spreadsheet like grids
  • Incorporates a proven state of the science, highly autonomous baseline processor offering on the fly ambiguity resolution, automated cycle slip detection/removal, and more for baselines up to 200km (125mi)
  • Automated search and retrieval of reference geodetic control and GNSS observations from organizations such as the US National Geodetic Survey and Continuously Operating Reference Station (CORS) networks
  • Rigorous least squares adjustment of all computed vectors
  • Seamless integration with downstream applications from Carlson and other vendors
Ready for the Future
  • Support of Galileo, Bediou, and Juntencho signals as soon as these become commercialy available
Supported GNSS Data Formats


RINEX v2, v3
Carlson *.log and *.rw5
Hemisphere GNSS *.bin
Altus *.sbf
Javad *.bin
NovAtel *.log
FOIF *.f**
Leica *.m00, lb2
NVS *.nvs
Septentrio *.sbf
Sokkia *.tos, *.pdc
Topcon *.tps
Trimble *.dat, *.t**, *.r**
ublox *.ubx

Introducing to SurveyGNSS

PPP Module

VRS Module

SurveyGNSS graphic view of satellites Graphic view of Observed Satellites and Observation
Automated search of published known points SurveyGNSS automated search
RINEX reference stations Automated list of RINEX reference stations
Stop and Go rover points for topo survey Stop and Go rover points
View w/Processed vectors View with processed vectors and choice of items to display
Supported export format Supported export format
known and adjusted coordinates view Known and adjusted coordinates view

Product Price
Carlson SurveyGNSS $1800
Precise Point Positioning – PPP Module $700
Virtual Reference Station(s) – VRS Module $700


Please contact your local Carlson Representative (US or Canada), your EMEA Carlson Representative or your local dealer for ordering information