Height Modernization Western States Regional Webinar Tuesday, November 19, :00am PT - 2:00pm PT (1:00 – 5:00 pm ET) OPUS-DB Publishing with OPUS (Live Demonstration) 1:30 – 2:00pm PT Mark L. Armstrong, PLS – Geodesist Oregon State Geodetic Advisor NOAA, National Geodetic Survey

Why Publish your OPUS Solution? 2 1) Helps maintain local ties to the National Spatial Reference System (NSRS). 2) Users can share their observation OPUS solutions with the public via a mark datasheet. 3) Provides coordinates, description, photos, and map for each observation. 4) Observations on benchmarks provides NGS with ellipsoid hts. useful for; -development of future hybrid geoid models -development of future vertical transformations 5) Local agencies, surveyors, scientists, can get datasheets for their own project marks tied to the NSRS.

But First – Accessing OPUS-DB Click on Open the map to browse marks

A Brief Look at OPUS-DB Each icon on the map represents an observed mark with datasheet (click on an icon to access)

249 Agencies 502 Users 6298 marks 6,971 solutions Top 10 VT682 FL416 OR388 MD369 LA357 OH298 AK288 WV241 MI230 TX230

Marks Published on Federal Land

Field Procedures and Solution Quality

Suggestion… before attempting to publish Before publishing to OPUS suggest submitting to OPUS without hitting the publish button to prove the observation data passed the quality requirements.

The Publishing Work Flow 10

After submission and NGS review is complete (~24hours). You will receiver an from OPUS – Mark is now published and shared with the world.

What’s on the Datasheet? TOP - is the mark description and close-up photograph. MIDDLE - the ref. frame and epoch etc with coordinates from the solution. BOTTOM - the horizon photo giving an impression of the mark’s surroundings and a map showing the mark’s location and directions to it. CONTRIBUTOR

Here’s another example. Notice the “See Also” highlight. This provides link to other obs on the same mark + any IDB entries for this mark. 13 OPUS-DB and the NGSIDB

Height Comparison OPUS DATASHEET IDB DATASHEET Comparison shows the OPUS GNSS ortho ht. to be m lower than the leveled ht.

*For now, OPUS shared mark sheets and the IDB datasheets exist as two separate database tools serving different purposes. **As the NGS begins to more fully understand the characteristics of the OPUS Database, along with future improvements to bluebooking, both databases may be more fully reconciled. NGS OPUS Database and the NGS Integrated Database (IDB) 15

Before you can make an observation you must find a benchmark… Use the NGS Data Explorer or Use the program DS World and Google Earth™ Facts – 1.Most benchmarks in the NGSIDB have never been observed with GNSS and therefore do not have a measured ellipsoid height and... 2.Most benchmarks have only scaled horizontal coordinates. Observing them with GNSS and publishing provides an OPUS-DB datasheet with a current 3D coordinate tied to the NSRS.

Live Demonstration LIVE – NGS DATA EXPLORERNGS DATA EXPLORER – Locate a mark to observe Found one - PID QE0275 (X 352) – V. Order: First Class II Print datasheet and go find it – take a digital photo of the cap Note any new description additions Set up tripod with GNSS antenna and observe for at least 4 hours. LIVE – PUBLISH AN OBSERVATIONPUBLISH AN OBSERVATION

Now lets look up the new OPUS mark datasheet Now lets look up the new OPUS mark datasheet (LIVE)

Links NGS Data Explorer – cloud program – DS World – download program – RS/index.shtml RS/index.shtml OPUS – publish your solution – QUESTIONS