Sonoma County Reserved GCP's

001QSI20160229Sonoma County Reserved GCP'svector digital dataThis dataset contains the independent GCPs used to verify the vertical accuracy of the LiDAR data in the Sonoma County project area. Coordinates and statistical parameters for each point are included in the attribute table. This shapefile provides locations for independent ground check points (GCPs) in the Sonoma County project area. 2013092820131126Ground condition during GPS sessionsCompleteNone planned-123.404098-122.35867638.91281438.212980NoneQSI, Sonoma County, GPS, RTK, Real Time Kinematic, GCP, Ground Check Point, Independent Check PointNoneSonoma County, Mendocino Lake, Dry CreekNoneThis dataset was contracted by the Sonoma County Vegetation Mapping and LiDAR Consortium (the Consortium), a group of public and private organizations. This dataset may be available for public distribution, information regarding the use of this dataset should be directed to the Consortium.Sonoma County, QSI1NoneGround check pointsGround Check Point (GCP) positions were collected on bare earth locations such as paved, gravel, or stable dirt roads, and other locations where the ground was clearly visible (and was likely to remain visible) from the sky during the data acquisition. GCP measurements were not taken on highly reflective surfaces such as center line stripes or lane markings on roads. For Real Time Kinematic (RTK) collection, a Trimble R7 base unit was set up over an appropriate monument to broadcast a kinematic correction to a roving R8 unit. The roving unit records precise location measurements with a standard deviation error of ≤ 1.5 cm relative to the base control. All acquisition occurs during optimal GNSS conditions (e.g., 6 or more satellites and a Position Dilution of Precision [PDOP] below 3.0). Daily forecasts from Trimble Planning software ensure that these conditions are met.GCP's may not be equitably distributed throughout the study area. GCP's are located only in open terrain (sand, rock, dirt, asphalt, concrete, etc.) where there is a high probability that the sensor will have detected the ground surface without influence from surrounding vegetation or other above ground structures (i.e. power lines, buildings, etc.). In some cases spatial distribution of GCP's throughout the study area may also be influenced by private land access.Prior to and during the LiDAR acquisition survey GCP's were collected throughout the study area. 20131126coordinate pair0.0000000270391375956080570.000000027039137595608057foot_usD NAD 1983 2011GRS 19806378137.0298.257222101VectorSimpleFALSE873FALSETRUESonoma County Independent Ground Check PointsGround check pointsQSIFeature Class873FIDInternal feature number.EsriSequential unique whole numbers that are automatically generated.FIDOID400ShapeFeature geometry.EsriCoordinates defining the features.ShapeGeometry000Numberunique IDQSIPoint id numbersUnique numeric identifier of featuresQSINumberDouble16156EastingX (easting) value in metersTrimbleX UTM coordinate defining the feature location.EastingDouble16156NorthingY (northing) value in metersTrimbleY UTM coordinate defining the feature location.NorthingDouble16156Known_ZZ recorded with GCP in metersTrimbleValue defining elevation location from ground control pointKnown_ZDouble16156Laser_ZZ from LiDAR points in metersQSIValue defining elevation location from TINed Surface ModelLaser_ZDouble16156DzChange in elevation, Z, in metersQSI, ASPRS Guidelines - Vertical Accuracy Reporting for Lidar DataValue defining delta Z from known location to TINed Surface Model.DzDouble16156Sonoma County Agricultural Preservation and Open Space Districtmailing and physical address

747 Mendocino Ave, Suite 100

Santa RosaCA95401USNot AvailableThis dataset was contracted by the Sonoma County Vegetation Mapping and LiDAR Consortium (the Consortium), a group of public and private organizations. This dataset may be available for public distribution, information regarding the use of this dataset should be directed to the Consortium.20160114Quantum Spatial, Inc. (QSI)physical

421 S.W. 6th Ave., Suite 800

PortlandOR97204US503-505-5100503-546-6801FGDC Content Standard for Digital Geospatial MetadataFGDC-STD-001-1998local time2016022916235000FALSEfile://\\PDX-199\E$\02_Reports\2_Completed\2014\NASA Roses_Sonoma\3_Sonoma_Delivery_Reports\Post_delivery_20160229\working\Sonoma_County_Reserved_GCPs_NAD83_2011_CASP2_USft.shpLocal Area NetworkSonoma_County_Reserved_GCPs_NAD83_2011_CASP2_USft0026162127.0264866458617.3832601842440.5208562094455.99975710.037ProjectedGCS_NAD_1983_2011Linear Unit: Foot_US (0.304801)NAD_1983_StatePlane_California_II_FIPS_0402_USFeet_2011<ProjectedCoordinateSystem xsi:type='typens:ProjectedCoordinateSystem' xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' xmlns:xs='http://www.w3.org/2001/XMLSchema' xmlns:typens='http://www.esri.com/schemas/ArcGIS/10.1'><WKT>PROJCS["NAD_1983_StatePlane_California_II_FIPS_0402_USFeet_2011",GEOGCS["GCS_NAD_1983_2011",DATUM["D_NAD_1983_2011",SPHEROID["GRS_1980",6378137.0,298.257222101]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Lambert_Conformal_Conic"],PARAMETER["False_Easting",6561666.666666666],PARAMETER["False_Northing",1640416.666666667],PARAMETER["Central_Meridian",-122.0],PARAMETER["Standard_Parallel_1",38.33333333333334],PARAMETER["Standard_Parallel_2",39.83333333333334],PARAMETER["Latitude_Of_Origin",37.66666666666666],UNIT["Foot_US",0.3048006096012192]]</WKT><XOrigin>-115211800</XOrigin><YOrigin>-93821500</YOrigin><XYScale>36983428.057351544</XYScale><ZOrigin>-100000</ZOrigin><ZScale>10000</ZScale><MOrigin>-100000</MOrigin><MScale>10000</MScale><XYTolerance>0.0032808333333333331</XYTolerance><ZTolerance>0.001</ZTolerance><MTolerance>0.001</MTolerance><HighPrecision>true</HighPrecision></ProjectedCoordinateSystem>20160229180907002016022918090700Microsoft Windows 7 Version 6.1 (Build 7601) Service Pack 1; Esri ArcGIS 10.2.2.3602Sonoma_County_Reserved_GCPs_NAD83_2011_CASP2_USft1-123.404098-122.35867638.91281438.212980Shapefile0.037dataset87320160229