Coastal Zone 2011 Conference “Cool Geodetic Resources For Your Project” A National Ocean Service, NOAA, Presentation 1)TOOLS TO OBTAIN GEODETIC CONTROL John Ellingson, National Geodetic Survey 2)GEODETIC &TIDAL DATUMS and USING VDATUM Marti Ikehara, National Geodetic Survey 3)INTERNATIONAL GREAT LAKES DATUM OVERVIEW Stephen Gill, Center for Operational Oceanographic Products and Services

Objectives Demonstrate new tools for obtaining Geodetic Control from the “PASSIVE” network (marks in the ground) Inform you how to obtain Geodetic Control from the “ACTIVE” network (CORS) Briefly explain the NGS Geodetic Advisor Program and its benefits to users

“PASSIVE” NETWORK National Spatial Reference System (NSRS), marks in the ground. 1.5 million marks in the National Geodetic Survey database. These marks provide: Horizontal position, or Horizontal position and ellipsoid height, or Orthometric Heights, or Both Horizontal and Vertical values Tidal Information

“DSWorld” Software Program Highly rated new NGS software tool Developed to search the NGS database Easy to learn/use Multiple search options available Displays search results using Google Earth

DSWorld opening screen

Lat-Lon-Radius Search Option

Click here to start your search State - County Search Option

“Search by County” results Florida – Nassau County was selected

Zooming-in to our area of interest….

Sample datasheet

Sample datasheet (continued)

Start by downloading “Google earth” at: Click here

Roll Pointer over “TOOLS” button “DOWNLOAD PC SOFTWARE” Open the NGS main page at

Click here Next, click on the link: “User-Contributed Software is also available…..”

Next, click on the DSWORLD (Version *.**) link. A “file download” window will appear. Choose to save the file where you can easily find it. It will be a zip file, so you will need to unzip it. Then double-click on the “setup.exe” file. That will install the program for you. For additional information or assistance, please contact Wisconsin State Geodetic Advisor John Ellingson by telephone at , or by at

“ACTIVE” Geodetic Network This is the Geodetic Network of C ontinuously O perating R eference S tations known as CORS

The NGS network of Continuously Operating Reference Stations (CORS)

CORS NETWORK Facts Currently over 1,800 sites and expanding rapidly - nearly all are owned by our partners Over 200 partners contribute to network- Government (all levels), Academia, and Private Organizations Enables GPS users to determine precise positional coordinates relative to NSRS Used by Surveyors, Scientists, Meteorologists, et al Backbone of the NGS OPUS products Approx. 175,000 positions calculated using CORS network in first half of 2011 NGS CORS Newsletter available on NGS website

Obtain Static Data Files for CORS Here CORS “Data Products” Page

Provide information about your project

Enter your custom requests

“ACTIVE” Geodetic Network OPUS Solutions (Online Positioning User Service) based on National Geodetic Survey CORS network

“OPUS” Online Positioning User Service OPUS – RS (15 min to 2 hrs of obs.) OPUS –S (2 hrs to 48 hrs of obs.) OPUS – DB (>4 hrs of obs.) publish your info Coming Soon: OPUS – Projects (beta)

OPUS Submission Webpage Your address Location of your data file Your antenna type Antenna height Customize your solution - details on next slide

Under the “OPTIONS” tab in OPUS OPUS Projects ID Include-Exclude CORS here SPCS overrule Change Geoid Model Publish in OPUS-DB? Select one to start computation process

OPUS Response to My Upload……

OPUS REPORT

The National Geodetic Survey Geodetic Advisor Program Advisor serves as a resource…… to assist Federal, State and local government agencies, academia, and the private sector to obtain the best results for their surveying and mapping projects.

Advisor Status In Your State

For further information or assistance: Useful links : NGS Home Page: CORS Webpage: OPUS Webpage: Find Your Advisor: This presentation will be uploaded to: