VRS & You

Chuck HutchinsVectors, Inc.

Technology

Technology

Technology

Miniaturization of Components!

User Components of VRS

User Components of VRS

Efficiency!!!

Where are my corrections coming from???

Network Components of VRS

CORS Stations&

Reference Stations

Network Components of VRS

Monumentation

Network Components of VRS

Monumentation Hardware

Network Components of VRS

Communications

Network Components of VRS

Communications Software

How does all of this work???

Infrastructure

The future of the Survey, Mapping and Construction industries.

Infrastructure

Server: Central Data Management

Data Flow

Reference Station data streams back to server through LAN or Internet

Data Flow

Roving receiver sends a NMEA string back to server using cellular modem - VRS position is established

NMEA - GGA

VRS

Data Flow

Server uses VRS position to create corrected observables and broadcasts to rover

RTCM or CMR+VRS

Data Flow

Rover surveys as in normal RTK survey but getting data as if coming from the VRS

VRS

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.

                 

Network Multiple Base Station Solution

B1 B2

B3

R

Let B1, B2 B3 be base stations, R be the rover

Four RTK engines run simultaneously:1. (1,2) 2. (2,3)3. (3,1)4. (1,R)+(2,R)+(3,R)

What’s the advantage???

Advantages of VRS

Eliminates dependency on single reference station or base station.

Uses established communications.

Establishes a single coordinate system.

VRS & You

Questions???