1. Using Mobile GIS to Populate a Spectral Database Kenneth Smith Digital Imaging and Remote Sensing Laboratory Chester F. Carlson Center for Imaging Science Rochester Institute of Technology Rochester, New York

2. Background on DIRS Use field spectral measurements to calibrate overhead sensors. Collect spectral information for scene generation in DIRSIG. Make both field and lab measurements to populate an online spectral database. MegaScene DIRSIG simulation of Van Lare Water Treatment Plant Flight Coverage WASP Sensor

3. Field Instruments D & P: Field Infrared Spectrometer ASD: Spectroradiometer Wavelength (microns) Reflectance Visible region of the EM Spectrum Sample: USFS Forest Firefighter’s green pants 2.5 0.35 Wavelength range: 2.0-16 (microns) Radiance (W/m^2/sr/micron)

5. Using ArcPad as a Solution Metadata recorded on paper wasn’t always filled out. Entering data into Excel was a long and tedious task. Needed a way to record data consistently and accurately. Had to upload data easily to the spectral database.

6. Types of Metadata to be Recorded Subject Information Description of the measurement subject Location Subject taxonomy ASD Specific Information ASD settings Weather conditions Images of measurement Post-processing information D & P Specific Information D & P settings Weather conditions Images of measurement Post-processing information

7. The Need for Customizing ArcPad For each measurement, there are at least 90 fields of data to be filled out. Drop-down menus and check-boxes had to be included to make data recording simpler. Include error checking. Automate certain fields. Example: Temperature conversions, Setting the current time.

8. Using a Layer vs. an Applet Layer files are a customization of a specific shapefile. They require less programming. Applet files are a customization of ArcPad itself. They are not bounded to a shapefile, appear when ArcPad starts up, and require more programming to make them functional. Applet files allow you to create multiple shapefiles with the same attribute fields.

9. Multiple Data Tables Subject Metadata IDSubject 1 2 3 4 5 grass pavement rocks maple leaf car door ASD Metadata IDFilename 1 2 grass1 pavement3 D & P Metadata ID 2 4 5 Filename 200406241132 200406241145 200406241205

10. Custom Tool Buttons Instrument Forms Take a GPS Waypoint Edit Metadata Digitize a Point

11. Subject Form 30 fields on 5 pages

12. Subject Taxonomy All subjects are classified with a built-in taxonomy used by the spectral database. Over 1100 combinations to choose from. Catalog ID number is generated which the spectral database uses to sort records. New “write-in” values generates a flag which alerts the database manager that a new category has been created and the taxonomy table should be updated.

13. Instrument Forms Lets you repeat information from the previous measurement. Automatically Calculated GPS Time 60+ fields on 13 pages

14. Multiple Measurements of One Subject MegaCollect Example

15. Edit Metadata Form Linking Metadata ID Number Subject delete button removes corresponding measurement records as well.

16. Expandability for Future Instruments Because subject and measurement metadata is saved on separate DBF tables, new instruments can be easily added. SOC400T in progress. SOC100 and CARY 500 to be added soon.

17. Tricks to Working with ArcPad Application Builder and Coding with VBScript Saving data to DBF tables Repopulating values when you switch pages on a form Using previous values Using temporary tables and templates Make use of the ArcPad User Forum!

18. Short Comings of ArcPad Application Builder Applet files do not let you save data to shapefiles or data tables easily. Built in default values and error checking for minimum and maximum values is not present. Soft input panel keyboard always pops up at the wrong time, limiting the available space for controls.

19. Acknowledgements Nina Raqueno Mehak Sujan Lon Smith Jason Faulring From the ArcPad User Forum: Tony Zoccolillo Mark Hoyland Jeff LeProwse

20. Questions?