1. Internet Ready RTK GPS Network By: Carlos J. Rodríguez, PLS CGSIC Meeting May 23,2006 vernixeng.com

2. Project Objectives Create the First GPS RTK Network in Puerto Rico Stream cm. accuracy real time using internet Integrate all GPS equipment in the same network

3. Project Benefits SPCS over wide areas Homogeneous high accuracy Increases efficiency and productivity Reduce Cost

4. RTK Basic GPS Base station with fix coordinated (X,Y,Z) Radio Modem (Broadcast) GPS Rover with radio Modem Compute errors and broadcast the errors to the rover. Real Time Kinematics

5. RTK Network Basic GPS Base station with fix coordinated (X,Y,Z) High speed internet connection Computer Server with RTK Network Software Compute network errors and broadcast the errors to the rover using internet

6. Vernix GPS Network System GPS choke Antenna designed by NASA. Leica GPS System 1200 Receiver system V4.0 with network connection, battery backup, 1Gb Memory. Leica Spider Net 2.1 Software with network adjustment. Dell Server Pentium (R) D 3.00 GHz, 2 Gb Ram, 1000 Gb memory, Internet 2, system backup.

7. Vernix GPS Network System GPS choke Antenna designed by NASA. Leica GPS System 1200 Receiver system V4.0 with network connection, battery backup, 1Gb Memory. Leica Spider Net 2.1 Software with network adjustment. Dell Server Pentium (R) D 3.00 GHz, 2 Gb Ram, 1000 Gb memory, Internet 2, system backup.

8. Vernix GPS Network System GPS Trimble Net RS from PRMA, Bayamon. (Private) GPS Trimble Net RS from PR4N, Coamo. (Private) GPS Trimble Net RS from PRMI, Parguera. (NOAA) Trimble Zephyr antenna Zephyr Antenna Net RS Receiver

9. Vernix GPS Network System Map

10. Leica Spider Net Software

17. Spider Net Applications Sismologia-UNAM GPS network has recorded an astonishing change in the North American plate crustal motion from the in-terseismic phase to the slow silent earthquake active phase at the end of 2001 over the entire Guerrero State of Mexico. The Istituto Nazionale Geofisica e Vulcanologia (INGV) is the Italian institute for monitoring volcanic activity. The Italian region is one of the most volcanically active on earth and the INGV is at the forefront of Volcanic Research.

18. Spider Net Applications Leica Geosystems' surveying solutions are used worldwide for the monitoring of man-made structures such as bridges, dams and buildings, during construction as well as after. The relationship between Leica Geosystems in Portugal and IGP has been based for many years on trust, quality and a high level of service and support. Consequently, IGP has decided to use Leica SPIDER software to manage the Portuguese National GPS Permanent Station Network (ReNEP), which currently has 8 GPS stations

19. Spider Net Applications Overall, using GIS and GPS has had a phenomenal impact on GRTC Transit. The organization has realized internal cost-savings by eliminating some of the services it previously contracted out that are now accomplished through the use of GIS and GPS technologies. The next step for GRTC is to put the mapping information onto its website. Reporter 49, Dec 2003) A massive 42% in productivity gains has been measured by Great Britain’s national mapping agency, Ordnance Survey, following the implementation of Leica GPS surveying systems to undertake their most detailed mapping. GPS was introduced to the field from January 2002 and allowed all Ordnance Survey surveyors to update map data on the spot.

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