nysnet cors rtn update 2018-f - c.ymcdn.com … · nysnet cors/rtn 2 stations - 15 minutes...
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1
NYSNet CORS/RTN
NYSAPLS Conference January 2018
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2NYSNet CORS/RTN
Stations - 15 MinutesStations, NYSNet/NGS, Positions, Heights, Consistency w/NSRS
GNSS – 20 MinutesGPS/GLONASS, GPS L5, Galileo, Future
RT/RINEX - 20 Minutes Network RTK, NOVA Maps, Live Status, RINEX, RT Mount Points, MSM, Notices, Future
Heights - 20 MinutesGEOID, Hybrid GEOID, Ellipsoid, Orthometric, GPS/BM’s, GEOID 99, 03, 12b, GPS/BM’s Residuals, Future
2022 Datums – 10 MinutesTerrestrial, Geopotential, change, planning
Questions/Review – 5 Minutes
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3Stations
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4
NYSNet Only CORS
NYSNet vs National CORS
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5NYSNet vs National CORS
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6Positioning NYSNet- OPUS Projects
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7Positions
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8Ellipsoid Heights
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9Consistency with NSRS
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10Entire Network Tracking GPS and GLONASS (GG)
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11GPS/GLONASS (GG)
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12GPS L5
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13Most of network tracks L5
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14Tracking GPS L5
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15Galileohttps://www.gsc-europa.eu/system-status/Constellation-Information
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16Most stations track Galileo, others need hardware upgrade.
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17Tracking Galileo
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18GNSS Launches
http://gpsworld.com/resources/upcoming-gnss-satellite-launches/
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19Network RTK(NRTK)
Atmosphere
Reference Station
Rover
10k >10k
1cm +1ppm
Rover
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20RTN Status
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21RTN Status NOVA Maps – Global RMS
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22RTN Status–Ionosphere Single Base RTK
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23RTN Status – Ionosphere Network RTK (NRTK)
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24Site Status
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25Live Site Status
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26Live Rover Status
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27RINEX Data
Xpos server in future. GNSS processing apps might access xposserver directly.
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28RT Data – Mount Points
Network RTK with GGG coming.net_msm_imaxNeed software upgrade.
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29Future Updates
RINEX Format• Will be moving to RINEX Version 3, to include GPS L5 and Galileo.
RT Format• Mount Points
near_msm to include RTCM multi signal messages.near_cmrpnet_msm_imax to include NRTK rtcm msm.net_cmrp_imax
• all of our single sites will be changed from RTCM 3 to MSM.
• Will be phasing out all older versions of RTCM, MAX, and GPUID
Positions• Considering updating the non NGS station positions to OPUS projects solution.• Considering using IGS coordinates, in current epoch, computed using OPUS projects, for
NRTK internal processing. To better compute the estimate of NRTK parameters. RINEX and RT products will still provide NAD83 (2011) EPOCH 2010 coordinates…..until 2002?
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30Notices
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31GEOID Models
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32Hybrid GEOID Models
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33GEOID12b – GPS/BM’s
GEOID03GEOID09GEOID12b
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34Compare GPS/GEOID12 to Leveled NAVD88 Residuals
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35Residual Calculation
-.033 =105.735 + (-31,337) – 74.431
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36Plot GPS/GEOID12 to Leveled NAVD88 Residuals
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37Y441 DS GPS/GEOID12 to Leveled NAVD88 Residual
-.033 =105.735 + (-31,337) – 74.431
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38Y441
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39NAVD88 Leveling
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40HARN Leveling
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41stations network and local accuracies.
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42Strategically Occupy GPS BM’s to support NGS GPS/BM program
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43Results – Least Squares Network Adjustment
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44Results Comparison
-31.337 G12b
105.768 GPS/G12b
??? -31.383
74.431 DS 74.352 DOT17
105.735 NAVD88 -.033
-.079
105.735 NAVD88
-.033 =105.735 + (-31,337) – 74.431
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45Results OPUS Projects
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47GEOID 12a Accuracy
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482022 Datums
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492022 Datums
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502022 Datums
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512022 Planning