<?xml version="1.0"?>
<metadata>
  <idinfo>
    <citation>
      <citeinfo>
        <origin>State of Ohio Office of Information Technology, Ohio Geographically Referenced Information Program</origin>
        <pubdate>20140923</pubdate>
        <pubtime>Unknown</pubtime>
        <title>AN165530.LAS</title>
        <geoform>digital data</geoform>
        <pubinfo>
          <pubplace>Columbus, OH</pubplace>
          <publish>OGRIP</publish>
        </pubinfo>
      </citeinfo>
    </citation>
    <descript>
      <abstract>2014 Medina County, OH Digital Orthoimagery/LiDAR Project - In spring of 2014 Woolpert colected new aerial LiDAR covering all of Medina County, Ohio (approximately 423 square miles). The aerial LiDAR was collected during leaf-off conditions at a point density average of 1-meter with products comprised of LAS (ground and above ground points), ESRI Raster (which contains ground only points). The LiDAR is being delivered as a countywide dataset, consisting of 2,500' x 2,500' tiles (which match the ortho tiling system). Adjacent flight lines overlap by an average of 30 percent. LiDAR was collected with a Leica LiDAR System. The file naming convention is as follows: anxxxyyy (Ohio North Zone); Please note that xxx and yyy represent the easting and northing coordinates (respectively) in state plane feet. Each LiDAR file is approximately 40 megabytes in size. Ownership of the data products resides withMedina County and the state of Ohio. LiDAR and ancillary data products produced through this contract are public domain data.</abstract>
      <purpose>The state of Ohio has a goal to develop and maintain a seamless statewide base map, referred to as OSIP (Ohio Statewide Imagery Program). OSIP is an initiative partnered through several State Agencies (i.e. ODOT, ODNR, OEPA) through OGRIP. USGS is also a partner.  Data from this project forms the foundation of the statewide base map, and was developed primarily to support multi-use applications, including homeland security, emergency management, economic development, and the business of government.</purpose>
    </descript>
    <timeperd>
      <timeinfo>
        <sngdate>
          <caldate>20140417</caldate>
        </sngdate>
      </timeinfo>
      <current>ground condition</current>
    </timeperd>
    <status>
      <progress>Complete</progress>
      <update>As needed</update>
    </status>
    <spdom>
      <bounding>
        <westbc>-81.786792</westbc>
        <eastbc>-81.777644</eastbc>
        <northbc>41.126074</northbc>
        <southbc>41.119156</southbc>
      </bounding>
    </spdom>
    <keywords>
      <theme>
        <themekt>None</themekt>
        <themekey>LiDAR</themekey>
      </theme>
      <place>
        <placekt>None</placekt>
        <placekey>United States</placekey>
        <placekey>Ohio</placekey>
        <placekey>Medina County</placekey>
      </place>
    </keywords>
    <accconst>This data set is in the public domain, and the recipient may not assert any proprietary rights thereto nor represent it to any one as other than a data set produced by Woolpert for Medina County and the Ohio Statewide Imagery Program.</accconst>
    <useconst>This data is for planning purposes only and should not be used for legal or cadastral purposes. This data set is provided "as-is" without warranty of any kind, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose.  User must assume responsiblity for determining the suitability of these data for their purposes. Users should be aware that temporal changes may have occurred since this data set was collected and some parts of this data may no longer represent actual surface conditions.  Users should not use this data for critical applications without a full awareness of it's limitations.</useconst>
    <ptcontac>
      <cntinfo>
        <cntorgp>
          <cntorg>OGRIP</cntorg>
        </cntorgp>
        <cntpos>GIS Manager</cntpos>
        <cntaddr>
          <addrtype>mailing and physical address</addrtype>
          <address>77 S. High St. - Rm 1990</address>
          <city>Columbus</city>
          <state>OH</state>
          <postal>43215</postal>
          <country>USA</country>
        </cntaddr>
        <cntvoice>(614) 466-4747</cntvoice>
        <cntfax>(614) 728-5297</cntfax>
        <hours>8:00 a.m. to 5:00 p.m. Eastern Time</hours>
      </cntinfo>
    </ptcontac>
    <secinfo>
      <secsys>Unclassified</secsys>
      <secclass>Unclassified</secclass>
      <sechandl>Unclassified</sechandl>
    </secinfo>
    <native>Microsoft Windows 7 Professional; TerraSolid LTD: Terrascan Version 014.003; ArcMap 10.2: ArcCatalog 10.2; GeoCue 2012.1</native>
  </idinfo>
  <dataqual>
    <logic>All formatted data are validated using commercial GIS software to ensure proper formatting and loading prior to delivery.</logic>
    <complete>The LiDAR data is visually inspected for completeness to ensure that are no gaps between flight lines.</complete>
    <posacc>
      <horizpa>
        <horizpar>Horizontal Accuracy compiled to meet 1.56 feet at 95% confidence level.</horizpar>
      </horizpa>
      <vertacc>
        <vertaccr>Compiled to meet 0.399 survey feet Fundamental Vertical Accuracy (FVA) based on RMSEz (0.2036) * 1.96</vertaccr>
      </vertacc>
    </posacc>
    <lineage>
      <procstep>
        <procdesc>Using Leica LiDAR system, 35 flight lines of high density data, at a nominal pulse spacing (NPS) of 1.0 meter, were collected for all of Medina County, Ohio (approximately 423 square miles). Multiple returns were recorded for each laser pulse along with an intensity value for each return. Two (2) missions were flown April 16 and April 17, 2014. All data for the task order is referenced to the Ohio State Plane North Zone (FIPS 3401), NAD83 (HARN), NAVD88, in U.S. Feet. Airborne GPS data was differentially processed and integrated with the post processed IMU data to derive a smoothed best estimate of trajectory (SBET). The SBET was used to reduce the LiDAR slant range measurements to a raw reflective surface for each flight line. The coverage was classified to extract a bare earth digital elevation model (DEM) and separate last returns. In addition to the LAS deliverables, one layer of coverage were delivered in the ArcINFO ArcGrid binary format: bare-earth. System Parameters: - Type of Scanner = Leica - Data Acquisition Height = 7,800 feet AGL - Scanner Field of View = +/-40 degrees - Scan Frequency = 35.5 Hz - Aircraft Speed = 150 Knots.</procdesc>
        <procdate>20140416</procdate>
        <proctime>1200</proctime>
        <proccont>
          <cntinfo>
            <cntorgp>
              <cntorg>Woolpert, Inc.</cntorg>
            </cntorgp>
            <cntpos>Geospatial Services</cntpos>
            <cntaddr>
              <addrtype>mailing and physical address</addrtype>
              <address>4454 Idea Center Blvd.</address>
              <city>Dayton</city>
              <state>OH</state>
              <postal>45430</postal>
              <country>USA</country>
            </cntaddr>
            <cntvoice>(937) 461-5660</cntvoice>
            <cntfax>(937) 461-0743</cntfax>
            <hours>8:00 a.m. to 5:00 p.m. Eastern Time</hours>
          </cntinfo>
        </proccont>
      </procstep>
      <procstep>
        <procdesc>The Leica calibration and system performance is verified on a periodic basis using Woolpert's calibration range. The calibration range consists of a large building and runway. The edges of the building and control points along the runway have been located using conventional survey methods. Inertial measurement unit (IMU) misalignment angles and horizontal accuracy are calculated by comparing the position of the building edges between opposing flight lines. The scanner scale factor and vertical accuracy is calculated through comparison of LiDAR data against control points along the runway. Field calibration is performed on all flight lines to refine the IMU misalignment angles. IMU misalignment angles are calculated from the relative displacement of features within the overlap region of adjacent (and opposing) flight lines. The raw LiDAR data is reduced using the refined misalignment angles.</procdesc>
        <procdate>2013</procdate>
        <proctime>1200</proctime>
        <proccont>
          <cntinfo>
            <cntorgp>
              <cntorg>Woolpert, Inc.</cntorg>
            </cntorgp>
            <cntpos>Geospatial Services</cntpos>
            <cntaddr>
              <addrtype>mailing and physical address</addrtype>
              <address>4454 Idea Center Blvd.</address>
              <city>Dayton</city>
              <state>OH</state>
              <postal>45430</postal>
              <country>USA</country>
            </cntaddr>
            <cntvoice>(937) 461-5660</cntvoice>
            <cntfax>(937) 461-0743</cntfax>
            <hours>8:00 a.m. to 5:00 p.m. Eastern Time</hours>
          </cntinfo>
        </proccont>
      </procstep>
      <procstep>
        <procdesc>Once the data acquisition and GPS processing phases are complete, the LiDAR data was processed immediately to verify the coverage had no voids. The GPS and IMU data was post processed using differential and Kalman filter algorithms to derive a best estimate of trajectory. The quality of the solution was verified to be consistent with the accuracy requirements of the project.</procdesc>
        <procdate>20140418</procdate>
        <proctime>1200</proctime>
        <proccont>
          <cntinfo>
            <cntorgp>
              <cntorg>Woolpert, Inc.</cntorg>
            </cntorgp>
            <cntpos>Geospatial Services</cntpos>
            <cntaddr>
              <addrtype>mailing and physical address</addrtype>
              <address>4454 Idea Center Blvd.</address>
              <city>Dayton</city>
              <state>OH</state>
              <postal>45430</postal>
              <country>USA</country>
            </cntaddr>
            <cntvoice>(937) 461-5660</cntvoice>
            <cntfax>(937) 461-0743</cntfax>
            <hours>8:00 a.m. to 5:00 p.m. Eastern Time</hours>
          </cntinfo>
        </proccont>
      </procstep>
      <procstep>
        <procdesc>The individual flight lines were inspected to ensure the systematic and residual errors have been identified and removed. Then, the flight lines were compared to adjacent flight lines for any mismatches to obtain a homogenous coverage throughout the project area. The point cloud underwent a classification process to determine bare-earth points and non-ground points utilizing "first and only" as well as "last of many" LiDAR returns. This process determined bare-earth points (Class 2), Noise (Class 7), Overlap (Class 12) and unclassified data (Class 1). The bare-earth (Class 2 - Ground) LiDAR points underwent a manual QA/QC step to verify that artifacts have been removed from the bare-earth surface. The surveyed ground control points are used to perform the accuracy checks and statistical analysis of the LiDAR dataset.</procdesc>
        <procdate>20140418</procdate>
        <proctime>1200</proctime>
        <proccont>
          <cntinfo>
            <cntorgp>
              <cntorg>Woolpert, Inc.</cntorg>
            </cntorgp>
            <cntpos>Geospatial Services</cntpos>
            <cntaddr>
              <addrtype>mailing and physical address</addrtype>
              <address>4454 Idea Center Blvd.</address>
              <city>Dayton</city>
              <state>OH</state>
              <postal>45430</postal>
              <country>USA</country>
            </cntaddr>
            <cntvoice>(937) 461-5660</cntvoice>
            <cntfax>(937) 461-0743</cntfax>
            <hours>8:00 a.m. to 5:00 p.m. Eastern Time</hours>
          </cntinfo>
        </proccont>
      </procstep>
    </lineage>
    <cloud>0</cloud>
  </dataqual>
  <spdoinfo>
    <direct>Point</direct>
  </spdoinfo>
  <spref>
    <horizsys>
      <planar>
        <mapproj>
          <mapprojn>NAD 1983 HARN StatePlane Ohio North FIPS 3401 Feet</mapprojn>
          <lambertc>
            <stdparll>40.43333333333333</stdparll>
            <stdparll>41.7</stdparll>
            <longcm>-82.5</longcm>
            <latprjo>39.66666666666666</latprjo>
            <feast>1968500.0</feast>
            <fnorth>0.0</fnorth>
          </lambertc>
        </mapproj>
        <planci>
          <plance>coordinate pair</plance>
          <coordrep>
            <absres>0.000000026852386980635863</absres>
            <ordres>0.000000026852386980635863</ordres>
          </coordrep>
          <plandu>foot_us</plandu>
        </planci>
      </planar>
      <geodetic>
        <horizdn>D North American 1983 HARN</horizdn>
        <ellips>GRS 1980</ellips>
        <semiaxis>6378137.0</semiaxis>
        <denflat>298.257222101</denflat>
      </geodetic>
    </horizsys>
    <vertdef>
      <altsys>
        <altdatum>North American Vertical Datum of 1988</altdatum>
        <altres>0.000100</altres>
        <altunits>Survey Feet</altunits>
        <altenc>Explicit elevation coordinate included with horizontal coordinates</altenc>
      </altsys>
    </vertdef>
  </spref>
  <distinfo>
    <distrib>
      <cntinfo>
        <cntorgp>
          <cntorg>OGRIP</cntorg>
        </cntorgp>
        <cntpos>GIS Manager</cntpos>
        <cntaddr>
          <addrtype>mailing and physical address</addrtype>
          <address>77 S. High St. - Rm 1990</address>
          <city>Columbus</city>
          <state>OH</state>
          <postal>43215</postal>
          <country>USA</country>
        </cntaddr>
        <cntvoice>(614) 466-4747</cntvoice>
        <cntfax>(614) 728-5297</cntfax>
        <hours>8:00 a.m. to 5:00 p.m. Eastern Time</hours>
      </cntinfo>
    </distrib>
    <resdesc>Downloadable Data</resdesc>
    <distliab>Woolpert prepared the original data as set forth in the Scope of Services, in accordance with reasonable care and due diligence as set forth in this Agreement, however, due to the easily alterable nature of electronic media, files, documents, and other deliverables, Woolpert, Inc. makes no warranties, either expressed or implied, with respect to the accuracy, completeness, merchantability, or fitness for any particular purpose, including, but not limited to, use of any/all data as described within this metadata file, by any user of this data. Any use will be at the end-user’s sole risk.</distliab>
    <stdorder>
      <digform>
        <digtinfo>
          <formname>LAS</formname>
          <formvern>1.2</formvern>
          <formspec>ASPRS</formspec>
        </digtinfo>
        <digtopt>
          <onlinopt>
            <computer>
              <networka>
                <networkr>http://ogrip.oit.ohio.gov/ServicesData/StatewideImagery/tabid/86/Default.aspx</networkr>
              </networka>
            </computer>
          </onlinopt>
          <offoptn>
            <offmedia>Unknown</offmedia>
            <recfmt>Digital</recfmt>
          </offoptn>
        </digtopt>
      </digform>
      <fees>Unknown</fees>
    </stdorder>
    <availabl>
      <timeinfo>
        <sngdate>
          <caldate>Unknown</caldate>
          <time>Unknown</time>
        </sngdate>
      </timeinfo>
    </availabl>
  </distinfo>
  <metainfo>
    <metd>20140923</metd>
    <metc>
      <cntinfo>
        <cntorgp>
          <cntorg>OGRIP</cntorg>
          <cntper>Jeff Smith</cntper>
        </cntorgp>
        <cntpos>GIS Manager</cntpos>
        <cntaddr>
          <addrtype>mailing and physical address</addrtype>
          <address>77 S. High St. - Rm 1990</address>
          <city>Columbus</city>
          <state>OH</state>
          <postal>43215</postal>
          <country>USA</country>
        </cntaddr>
        <cntvoice>(614) 466-4747</cntvoice>
        <cntfax>(614) 728-5297</cntfax>
        <hours>8:00 a.m. to 5:00 p.m. Eastern Time</hours>
      </cntinfo>
    </metc>
    <metstdn>FGDC Content Standards for Digital Geospatial Metadata</metstdn>
    <metstdv>FGDC-STD-001-1998</metstdv>
    <mettc>local time</mettc>
    <metsi>
      <metscs>Unclassified</metscs>
      <metsc>Unclassified</metsc>
      <metshd>Unclassified</metshd>
    </metsi>
  </metainfo>
</metadata>