8/7/2009 1 Advanced Technology for Advanced Technology for Design Mapping and Design Mapping and Construction Layout Construction Layout A A C E Meeting Daniel K. Mardock Daniel K. Mardock RBF Consulting Survey Manager RBF Consulting Survey Manager Registered Land Surveyor Registered Land Surveyor Certified Federal Surveyor Certified Federal Surveyor Arizona Professional Land Surveyors Association Arizona Professional Land Surveyors Association Central Chapter President Central Chapter President A.A.C.E. Meeting August 5, 2009 Contents Contents ►Pace of Developing Survey Technology Pace of Developing Survey Technology ►GPS GPS ►Photogrammetry Photogrammetry ►Laser Scanning Technology Laser Scanning Technology ►Construction/Machine Guidance Construction/Machine Guidance 1750’s to 1950’s 1750’s to 1950’s Compass and Chain Colonial and Early US Lands Surveys Portable Telescope Improves Precision Steel Tape Improves Measurement Precision Solar Transit for Astronomic Bearings Used in Geodesy Solar Compass Developed to Correct for Magnetic Anomalies Technology Improves Precision All Measuring Completed by Crossing the Ground 200 Year Span 1950’s to Now: Electronic Age 1950’s to Now: Electronic Age Microwave Laser Infrared Measurements still made across the ground but, only the endpoints of the line must be occupied. 40 to 50 Year Span Infrared Infrared Laser & Infrared Calculations & Data Collection Calculations & Data Collection 1st Shift Key Continuous Memory Preprogrammed Chip 200 Year Span Memory Card. Infrared Comm. Data Upload and Download Cogo Functions DOS Programming Commodore 64 Windows System Bluetooth Radio for Robotics Cellular Modem E-Mail Controller Software Cogo Functions GPS Processing Collection and Stakeout 30 to 40 Year Span Data Collection and Maps Data Collection and Maps 200 Year Span 40 to 50 Year Span
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Contents Construction Layout · Construction Layout AACE Meeting Daniel K. Mardock RBF Consulting Survey Manager Registered Land Surveyor Certified Federal Surveyor Arizona Professional
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8/7/2009
1
Advanced Technology for Advanced Technology for Design Mapping and Design Mapping and Construction LayoutConstruction Layout
A A C E Meeting
Daniel K. MardockDaniel K. MardockRBF Consulting Survey ManagerRBF Consulting Survey Manager
Registered Land SurveyorRegistered Land SurveyorCertified Federal SurveyorCertified Federal Surveyor
Arizona Professional Land Surveyors Association Arizona Professional Land Surveyors Association Central Chapter PresidentCentral Chapter President
A.A.C.E. MeetingAugust 5, 2009
ContentsContents
►►Pace of Developing Survey TechnologyPace of Developing Survey Technology►►GPSGPS►►PhotogrammetryPhotogrammetry►►Laser Scanning TechnologyLaser Scanning Technology►►Construction/Machine GuidanceConstruction/Machine Guidance
1750’s to 1950’s 1750’s to 1950’s Compass and ChainColonial and Early US Lands Surveys
Solar Transit for AstronomicBearings Used in Geodesy
Solar CompassDeveloped to Correct for Magnetic Anomalies
Technology Improves Precision
All Measuring Completed byCrossing the Ground
200 Year Span
1950’s to Now: Electronic Age1950’s to Now: Electronic Age
Microwave Laser
Infrared
Measurements still made across the ground but, only the endpoints of the
line must be occupied.40 to 50 Year SpanInfrared
InfraredLaser & Infrared
Calculations & Data CollectionCalculations & Data Collection
1st Shift Key Continuous Memory
Preprogrammed Chip
200 Year Span
Memory Card. Infrared Comm.
Data Upload and Download Cogo Functions
DOS Programming
Commodore 64Windows SystemBluetoothRadio for RoboticsCellular ModemE-MailController SoftwareCogo FunctionsGPS Processing Collection and Stakeout
30 to 40 Year Span
Data Collection and MapsData Collection and Maps
200 Year Span
40 to 50 Year Span
8/7/2009
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Global Positioning SystemGlobal Positioning System
►►No longer need line of sight for measurementNo longer need line of sight for measurement
►►No real limit on the length of the line to be No real limit on the length of the line to be measured a few feet to several milesmeasured a few feet to several milesmeasured, a few feet to several milesmeasured, a few feet to several miles
►► Finally the surveyor is free to wander the earth Finally the surveyor is free to wander the earth and take the easy measurementsand take the easy measurements
►►GPS has two main segments…GPS has two main segments…
GPS Has Two Main SegmentsGPS Has Two Main Segments
SPACE SEGMENTSPACE SEGMENT
GROUND SEGMENTGROUND SEGMENTINTERACTION OF INTERACTION OF
SPACE AND GROUND SEGMENTSSPACE AND GROUND SEGMENTS
GPS By TrilaterationGPS By TrilaterationDistance D = Speed of Light x Time
D
GPS Is A Statistical Approach To GPS Is A Statistical Approach To Measurement AnalysisMeasurement Analysis
►►GPS surveying is analysis of hundreds of GPS surveying is analysis of hundreds of thousands of measurements projected on thousands of measurements projected on mathematical models of the earth sphere mathematical models of the earth sphere (Conventional is 1 or 2 measurements on a (Conventional is 1 or 2 measurements on a (Co e t o a s o easu e e ts o a(Co e t o a s o easu e e ts o aplane) plane)
►►No more assumed coordinatesNo more assumed coordinates
►►All projects can be geoAll projects can be geo--referencedreferenced
►►Vertical component of the measurement is the Vertical component of the measurement is the weakest link, longer occupation timesweakest link, longer occupation times