1. Chuck Hutchins Vectors, Inc.
VRS & You
Chuck Hutchins
Vectors, Inc.

2. Technology

3. Technology

4. Technology

5. Miniaturization of Components!

6. User Components of VRS

7. User Components of VRS
Efficiency!!!

8. Where are my corrections coming from???

9. Network Components of VRS
CORS Stations & Reference Stations

10. Network Components of VRS
Monumentation

11. Network Components of VRS
Monumentation Hardware

12. Network Components of VRS
Communications

13. Network Components of VRS
Communications Software

14. How does all of this work???

15. Infrastructure
The future of the Survey, Mapping and Construction industries.

16. Server: Central Data Management
Infrastructure
Server: Central Data Management

17. Data Flow
Reference Station data streams back to server through LAN or Internet

18. Data Flow
Roving receiver sends a NMEA string back to server using cellular modem - VRS position is established
VRS
NMEA - GGA

19. Data Flow
Server uses VRS position to create corrected observables and broadcasts to rover
VRS
RTCM or CMR+

20. Data Flow
Rover surveys as in normal RTK survey but getting data as if coming from the VRS
VRS

21. VRS - How does it work? Network Processes Integrity monitoring
Geometric correction
Correction for tropospheric errors
Correction for ionospheric errors
Ambiguity resolution
Consistency check
Delivery of VRS corrections to your mobile location.

22. Network Multiple Base Station Solution
Let B1, B2 B3 be base stations, R be the rover B1 B2 R B3
Four RTK engines run simultaneously:
(1,2)
(2,3)
(3,1)
(1,R)+(2,R)+(3,R)

23. What’s the advantage???

24. Advantages of VRS
Eliminates dependency on single reference station or base station.
Uses established communications.
Establishes a single coordinate system.

26. VRS & You
Questions???