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Surveys and Photogrammetry. PRESENTS. Where is the Monument?. Presented by: DeLane R. Meier Surveys & Photogrammetry. We survey in all types of weather, riding on an ATV … or. … walking. We survey in all types of terrain. Horizontal & vertical monuments are used in our surveys. - PowerPoint PPT Presentation
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Surveys and Photogrammetry
PRESENTS
Where is the Monument?
Presented by:
DeLane R. Meier
Surveys & Photogrammetry
We survey in all types of weather, riding on an ATV … or
… walking
We survey in all types of terrain.
Horizontal & vertical monuments are used in our surveys.
HARN (horizontal) and 1st order (vertical) monuments in
North Dakota.
GPS CONTROL TYPES
• MASTER CONTROLthree Horizontal and four vertical known points.
(The goal: To eliminate this step)
• PROJECT CONTROL
Iron pins placed along the project corridor.
GPS SURVEY TYPES
• Real time Surveys
• Are done to collect the ground survey data
• underground utilities
• culverts
• sign surveys
• misc.
• Static Surveys
• Are done to create the project control.
THE OLD WAY (Static Survey)
Setting a GPS receiver on a concrete monument
The new way(To eliminate the master control step)
STATION MEDORA (the tower)
STATION MEDORA (the geodetic antenna)
STATION MEDORA (the GPS receivers)
Surveying with OPUS(collecting GPS data)
GPS data sent to OPUS (input screen)
OPUS computed position on station “Deslacs”
Towers used DIFF. NORTH
DIFF. EAST
DIFF. ELEV.
MDR3, BSMK, CLK1 +0.06 -0.11 +0.21
MDR3, BSMK, PNR1 +0.05 -0.10 +0.19
BIL1, CLK1, PNR1 +0.06 -0.11 +0.18
OPUS statistics for June 2003
OPUS (Online Positioning User Service) processed 5,237 solutions.
Average of 174 GPS solutions per day.
There were a total of 4440 users of the system.
OPUS solutions on July 7, 2003
US# 2 Berthold eastPROJECT STATISTICS
One person performed the following in less then
four days.
• Set 5 project control points (Iron pins).
• Set GPS receiver on each control point for two hours or more.
• Sent data to OPUS for computing. Received 3-D coordinates for the 5 unknown points.
• Tied in 64 aerial targets.
We ELIMINATED this step
How is OPUS so efficient?
We find that we can realize real savings in:
1. Reduction of staff hours needed to do the static survey.
2. Reduction of GPS receivers needed to do the static survey.
3. Reduction of vehicles needed to do the static survey.
The next step:Speed up “real time” surveys
Original “real time” setup
Eliminate the base station setup
Using an NDGPS tower and
A GPS Rover, for more “real time” work
That’s better!
GPS is one part of a total system to complete projects faster and more efficiently.
2-D and 3-D (future)
MICROSTATION/GEOPAK
Digital InterPlot
and FileNet
Some advantages of using FileNet
1. Ability to find documents, plans, and drawings on the users’ computers.
2. Ability to safely store electronic data in one place.
3. Ability to work with intelligent documents.
4. Eliminate static microfilming and microfiche plans.
The most significant resource in surveying …
THE END