Summer 2

015

GISCO M

eeting

Zach Edwards – Geospatial Solutions Representative, Colorado & Wyoming Territory

Unique & Powerful Geospatial Field Data Collection Solutions: Harnessing all types of Real-Time

Corrections

Questionnaire• How many people in here currently collect geospatial

data in the field?• If so, what type of data are you collecting?• If so, do you use GPS/GNSS equipment?• How accurate do you believe this data needs to be

collected? Why?• How many of you differentially correct or post-process

your GPS/GNSS data?• If not, why?

Unique & Powerful Geospatial Field Data Collection Solutions: Harnessing all types of Real-Time

Corrections

• Use free SBAS (WAAS) corrections for sub-meter data collection efforts

• Use corrections from a single reference station in real-time

• Use corrections from a network of base stations known as a VRS or VRN

• Use a mobile base to get corrections in areas where there is no cellular or baseline lengths (from the rover to the base) are too long

• Use Trimble’s RTX technology with RTX-Capable Devices

Workflows That Can Utilize SBAS for Sub-Meter Results

Trimble R1 GNSS Receiver:

Works with iOS, Android, Windows Mobile 6.5x, or

Windows 7/8.xTrimble Geo7x (sub-

meter model)

• Satellite Based Augmentation System (SBAS): Wide Area Augmentation System (WAAS)

Spectra Precision Mobile Mapper 120 (sub-meter model)

WAAS Sub-Meter Results with R1 Rugged Receiver w/ any Data Collection App

Data Collection App…

GNSS Status Utility App

Current Correction Sources: SBAS (WAAS)

Sub-Meter Results

Sub-Meter Results with R1 Rugged Receiver w/ ESRI’s Collector App

R1 Rugged Receiver for Accurate Data Collection with TerraSync

SBAS (WAAS)= 17” with CEA of ~30”

TerraSync 5.70

Single Base Corrections Over Internet

MM 300 + Android or Windows 8.x Device + GPS/GNSS-based Data Collection Application = 1-30cm result

My Results: <2cm 2D and <3cm 3D. See Here.

Single Base Corrections Over Internet

Single Base Corrections Over Radio

Single Base Corrections Over Internet/Radio

Virtual Reference Station (VRS)/Virtual Reference Network (VRN) Corrections Over Internet

VRS/VRN Examples: • http://www.trimble.com/positioning-ser

vices/interactive-map/interactive-map.aspx

• http://emap.mesacounty.us/GPS_Survey/GPS_Survey.htm

VRS/VRN Corrections Over Internet

VRS/VRN Corrections Over Internet/Radio

Use a mobile base to get corrections

Trimble RTX: Viewpoint, Rangepoint, and Centerpoint

• Trimble RTX is a subscription-based service that empowers RTX-enabled receivers to receive satellite or internet based corrections• RTX Subscription levels for Mapping and GIS Users:

• Viewpoint (sub-meter via satellite or cellular)• Rangepoint (up to 6” accuracy via cellular only)• Centerpoint (sub-4cm accuracy via satellite or cellular)

• RTX MGIS Website: http://www.trimble.com/positioning-services/mapping-gis-applications.aspx

Viewpoint RTX Sub-Meter Results with R1 Rugged Receiver w/ any Data Collection App

Data Collection App…

GNSS Status Utility App

Current Correction Viewpoint RTX

($400/yr)

Questions?