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Digital Mapping Home using handhelds



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Digital Mapping Home 1 of 3 http geology bgsu edu Onasch Digital Mapping Digital Mapping Ho BGSU Digital Mapping Website Bowling Green State University has been using digital mapping in its summer field course since the summer of 1999 In addition several on campus courses use various components of our system as do faculty in their research The system integrates GPS and GIS to produce accurate maps in a digital format System Components Pocket PC computer Compaq hp iPAQ handhelds iPAQ 3970 Expansion battery pack with PC card slot Ruggedized case GPS receiver TeleType CF card receiver ESRI ArcPad for handheld and desktop laptop ESRI ArcView for desktop laptop Digital Mapping in the Summer Field Course Curriculum The projects are organized to progressively introduce students to digital mapping The first two mapping projects are done using traditional methods of mapping on topo and air photo basemaps GPS is introduced in a one day project where students map a surveyed triangular course using pace and compass GPS single reading GPS averaged reading and differentially corrected GPS Students plot the location of the three stations as determined by each method on a single basemap to see the advantages and limitations of using GPS for positional information The afternoon is spent mapping a single contact with a series of GPS waypoints downloading the data and plotting them on a topo basemap The next three mapping projects have the students mapping on DOQ and or DRG basemaps on Pocket PC computers using ArcPad In addition to drawing contacts students collect structural data and make field notes on the handheld A stereonet program on the handheld allows them to subset their structural data and plot them in the field Each night they download their day s work to ArcView running on a laptop After editing the contacts and compiling them with the previous day s work they then upload the compiled map back to the handheld for the next day s field work At the end of the project the



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