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picture1_Survey Ppt 80287 | Op5 Forum Gillins 22june2021


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File: Survey Ppt 80287 | Op5 Forum Gillins 22june2021
objectives develop opus projects so that gnss vectors from rtk surveys can be uploaded checked adjusted and submitted to ngs develop a standard file format for gnss vectors gvx develop ...

icon picture PPTX Filetype Power Point PPTX | Posted on 07 Sep 2022 | 3 years ago
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                          Objectives
    •Develop OPUS-Projects so that GNSS vectors 
     from RTK surveys can be uploaded, checked, 
     adjusted, and submitted to NGS
    •Develop a standard file format for GNSS 
     vectors (GVX)
    •Develop tools for surveyors to combine vectors 
     from RTK surveys with static GNSS data
 09/07/2022                                                 2
      Real-Time Kinematic (RTK) Surveying
     Conventional RTK
        • Stationary single “base” station
        • Transmits precise coordinates and 
                                                                    Base             Rover
          GNSS observables to moving “rover”
        • < 10-20 km baseline length
     Applications
        • Survey engineering
                                                             www.alberding.eu     www.gcfarm.com
        • Mobile mapping
        • Precision agriculture 
        • Mining
        • Construction
                                                                                                      3
                                                   www.steckbeck.net
  9/7/22                                                                www.positionpartners.com.au
                                          Real-Time Networks 
                      Virtual Reference Stations (VRS)                          Master-Auxiliary Concept (MAC)
                       •   Vector “tails” referenced to virtual base         •   Vector “tails” connected to physical 
                           station                                               base station
                       •   Base station position is variable                 •   Base station position is fixed
                                  RTN Base                    RTN Base
     MUST store data 
     as vectors!!                              VRS
                     Control
                     Center
                                   (Landau et al. 2002)      RTN Base
                                                                                             (Leica 2005)                           4
                    9/7/22
      Empirical Evaluation of the Accuracy of RTNs
                                                       E                                  95% Confidence
                                                         l
                                                          l
                                                          i
                                                           p
                                                            s
                                                              oi
                                                                d H
                                                                    ei
                                                                      gh
                                                                         t                ± 5.0 cm, vertical
                                                                                          ± 2.5 cm, horizontal
                                                          H
                                                            or
                                                               i
                                                               z
                                                                on
                                                                   t
                                                                    al                    Or similar to 
                                                                                          accuracy of a 2-h 
                                                                                          OPUS-S solution!
                                                                             [Allahyari et al. 2018]                                         5 5
  09/07/2022
                  GVX Flow Chart
    09/07/2022                                          6
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...Objectives develop opus projects so that gnss vectors from rtk surveys can be uploaded checked adjusted and submitted to ngs a standard file format for gvx tools surveyors combine with static data real time kinematic surveying conventional stationary single base station transmits precise coordinates rover observables moving km baseline length applications survey engineering www alberding eu gcfarm com mobile mapping precision agriculture mining construction steckbeck net positionpartners au networks virtual reference stations vrs master auxiliary concept mac vector tails referenced connected physical position is variable fixed rtn must store as control center landau et al leica empirical evaluation of the accuracy rtns e confidence l i p s oi d h ei gh t cm vertical horizontal or z on similar solution flow chart...

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