North Carolina State University, Center for Earth Observation 20021001 first remote-sensing image http://www1.usgs.gov/vip/apco/apcoortho.zip doi:10.5066/F7R20Z9R Orthorectified color infrared ERDAS IMAGINE image of Appomattox Court House National Historical Park. Produced from 37 color infrared photos taken October 22, 2001. Orthorectification accomplished with ERDAS IMAGINE Orthobase v8.5 software. The horizontal RMSE is 0.860 meters. This meets the NMAS Class 1 standards. The dataset was developed for Appomattox Court House National Historic Park use in natural resource management. 20011022 ground condition Complete Unknown Appomattox Court House National Historical Park and environs -78.837190 -78.763869 37.400682 37.362406 none Orthorectified Color Infrared mosaic aerial photo CIR image leaf-on none Virginia National Historical Park National Park Appomattox Court House Appomattox none 2001 leaf-on October none none Brian Eick Appomattox Court House National Historical Park Natural Resource Manager mailing and physical address

Appomattox Court House National Historical Park Hwy. 24, P.O. Box 218

Appomattox Virginia 24522 USA (434) 352-8987 Brian_Eick@nps.gov Mark P. Smith and William Millinor ERDAS IMAGINE .img File and MrSID Compressed File none Appomattox Court House National Historical Park Overall positional accuracy of 0.860 RMSE meters meets the NMAS Class 1 map standard. Horizontal accuracy was assessed on the basis of 37 field survey points distributed throughout the image. The actual field coordinates for these points were recorded with a Trimble ProXRS GPS unit with real-time differential correction with a minimum of 180 fixes per point. The field coordinates were then compared to the image mosaic coordinates for these points, determined in ESRI ArcView 3.3 software. USGS (http://ned.usgs.gov/) unknown model 30 meter online 20010926 20010926 dem elevation Kucera International, Inc Unpublished Material remote-sensing image 6000 color IR aerial transparencies 20011022 ground condition photos Aerial view of Appomattox Court House NHP The photos (37 total) were used to create an orthorectified mosaic using IMAGINE. The photos were scanned at 600 dpi and imported into IMAGINE. The DEMs were resampled from 30 meters to 10 meters in ArcInfo Workstation using cubic convolution and then mosaicked together. If the mosaicked DEMs had gaps, they were then run in ArcInfo Workstation using a focal mean. The images were orthorectified using IMAGINE Orthobase software. Airborne GPS and IMU data were used in the aerial triangulation procedure. Aerial triangulation produced a single RMSE of less than 1 meter for the entire block of photos. The orthorectified images were then mosaiced within IMAGINE to form one seamless basemap image for Appomattox Court House NHP. The mosaic was compressed using MrSID software at a 20:1 target compression ratio. 200207 North Carolina State University, Center for Earth Observation mailing address

NCSU Campus Box 7106

Raleigh NC 27695-7106 USA 919-515-3430 919-515-3439 Raster Pixel 14905 23266 Universal Transverse Mercator 17 0.999600 -81.000000 0.000000 500000.000000 0.000000 row and column 0.275090 0.275090 meters North American Datum of 1983 Geodetic Reference System 80 6378137.000000 298.257222 Dataset consists of a raster 3 band color image. The bands are blue, green and near infrared. Each pixel contains a value between 0 - 255. none USGS/CSS/Core Science Analytics and Synthesis USGS-NPS Vegetation Characterization Program Coordinator mailing and physical address

Denver Federal Center, Building 810, MS 302

Denver Colorado 80225 (303) 202-4220 303-202-4219 gs-b-npsveg@usgs.gov Downloadable Data The U.S. Geological Survey and the National Park Service shall not be held liable for improper or incorrect use of the data described and/or contained herein. These data and related graphics (if available) are not legal documents and are not intended to be used as such. The information contained in these data is dynamic and may change over time. The data are not better than the original sources from which they were derived. It is the responsibility of the data user to use the data appropriately and consistent within the limitations of geospatial data in general and these data in particular. Any related graphics (if available) are intended to aid the data user in acquiring relevant data; it is not approriate to use the related graphics as data. The U.S. Geological Survey and the National Park Service gives no warranty, expressed or implied, as to the accuracy, reliability, or completeness of these data. It is strongly recommended that these data are directly acquired from an U.S. Geological Survey and National Park Service servers and not indirectly through other sources which may have changed the data in some way. Although these data have been processed successfully on a computer system at the U.S. Geological Survey, no warranty expressed or implied is made regarding the utility of the data on another system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. This disclaimer applies both to individual use of the data and aggregate use with other data. It is also strongly recommended that careful attention be paid to the contents of the metadata file associated with these data. Mention of trade names or commercial products in this metadata report does not constitute endorsement or recommendation for use by the U. S. Department of the Interior, U. S. Geological Survey and National Park Service. HTML http://www.usgs.gov/core_science_systems/csas/vip/parks/apco.html Internet Access None 20021001 20100512 USGS/CSS/Core Science Analytics and Synthesis USGS-NPS Vegetation Characterization Program Coordinator mailing and physical address

Denver Federal Center, Building 810, MS 302

Denver Colorado 80225 (303) 202-4220 303-202-4219 gs-b-npsveg@usgs.gov FGDC Biological Data Profile of the Content Standard for Digital Geospatial Metadata FGDC-STD-001.1-1999 http://www.usgs.gov/core_science_systems/csas/metadata/index.html