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<br />I <br /> <br />I <br /> <br />I <br /> <br />~~..- <br /> <br />Capital Area Planning Council- Work Order <br /> <br />-sANBfRN- <br /> <br />"'1 <br /> <br />Procedures <br /> <br />Sanborn will acquire d1gital aenalrmagery at an altitude to achieve an equzvalent negative <br />scale of 1"=600', 1"=1500' and 1"=2,500 along an optimal fhght line pattern. Prior to <br />ini1:lating the aenalrmagery missIOn, a proposed flight lme map will be developed uS111g <br />digital boundaries provided by the Par1:lCipants. The flight plan will be submitted to the <br />Participants's Project Manager for approval prior to 111i1:lating the aerialrmagery mission. <br />The aerial missiOn will proceed upon receipt of Participants's signed approval and <br />authorization to proceed. <br /> <br />Sanborn will use a combination of conven1:lonal ground control augmented by airborne <br />GPS/lMU (AGPS/IMU) data to control the FAAT. Sanborn will maximize the use of <br />eXisting ground survey sta1:lons as control and checkpo111ts for the generation of <br />orthophotographs. Swtable eXiS1:lng NSRS geode1:lc control will be used, supplemented <br />where necessary by new serm-permanent ground control points. Ties will be made to <br />existing Order B (two or more) and First Order horizontal control, and to vertical <br />control of suitable (Second Order or better) quality, to ensure conformity with the <br />specified datums (NAD83 and NA VD88). Vertical control will be established via a ~ <br />combination of Second Order digital geodetic leveling and First Order GPS surveys. <br />Final coord1nates will be provided on the Texas Plane Coordinate System, Central Zone <br />111 units of the U.S. Survey Foot. <br /> <br />Upon completlng Austin's ground control phase, Sanborn will prepare and subrmt a <br />final Survey Report. A Control Diagram will also be prepared which will address all <br />eXisting and newly established control used as a basis for the subsequent <br />photogrammetric work. <br /> <br />Fully analytical aerial triangulation will be performed on the new photography and <br />control to support Softcopy compilation. The existing DTM and planimetrics will be <br />updated uS111g Softcopy compilation methods. <br /> <br />Softcopy photogrammetry workstations will be used to supenmpose the eXiStlng 2003 <br />DEM/DTM data and planrmetnc data aga111st the new digital imagery. The exiS1:lng <br />DEM/DTM will be updated as necessary to allow for ortho-rectifica1:lon of the new <br />imagery and to produce new or update existing planimetric data as appropnate. <br /> <br />The Participants 1"=100', 1"=200' and 1"=400' Map Scale Orthophotography, <br />planimetnc and topographic features will be updated uSlllg the spring 2006 digital <br />rmagery. <br /> <br />The new or updated DEM/DTM will be applied to the digttalrmagery to differentially <br />rectify the rmage to elinunate distortlon. Once the rmagery has been rectified, it will be <br />structured and formatted 111 a seamless nnage database and re-sampled to the <br />appropriate resolution. The f111al deliverable will be images in tiled GeoTIFF format <br />Wlth world fties. <br /> <br />CAPCOG GeoMap Update. Work Order Fee Schedule - Participants <br />Confidential and Proprietary, C> 2005 The Sanbom Map Company, Inc., ALL RIGHTS RESERVED <br /> <br />2 <br />