Identification_Information: Citation: Citation_Information: Originator: EarthData International, Inc. Publication_Date: 20070127 Title: Topographic Data Development (Lidar acquisition and processing) for Camp Shelby, MS Geospatial_Data_Presentation_Form: map Description: Abstract: This metadata record describes the acquisition and processing of bare earth lidar data, raw point cloud lidar data, lidar intensity data, and floodmap breaklines consisting of a total of 280 sheets for Camp Shelby, MS. The post-spacing for this project is 3-meter. This project was broken into 3 parts, Acquisition, Part A Processing, and Part B Processing. Acquisition was tasked by Mississippi Geographic Information, LLC (MGI); Work Order No. ED-5. Part A Processing was tasked by MGI; Work Order No. ED-7. Part B Processing was tasked by MGI; Work Order No. ED-8. EarthData International, Inc. (EarthData) is a member of MGI and was authorized to undertake this project in accordance with the terms and conditions of the Professional Services Agreement between MGI and the Mississippi Department of Environmental Quality (MDEQ), dated February 17, 2004, and in accordance with MGI Task Order No. 18a. This project is being delivered to the City of Hattiesburg, Camp Shelby, USGS, and MDEQ. Products developed for the City of Hattiesburg (City of 1. Final lidar data georeferenced to MS State Plane East Zone, NAD83, NAVD88, US Survey foot 2. Bare earth lidar data in ASCII format and LAS format 3. Raw point cloud lidar data in LAS format 4. Lidar intensity data in TIF format 5. Digital flight line index in ESRI-compatible format 6. Survey control report 7. Lidar processing report Products developed for Camp Shelby (Part A) include the 1. Final lidar data georeferenced to UTM Zone 16 North, NAD83, NAVD88, meters 2. Bare earth lidar data in ASCII format and LAS format 3. Raw point cloud lidar data in LAS format 4. Lidar intensity data in TIF format 5. Digital flight line index in ESRI-compatible format 6. Survey control report 7. Lidar processing report Products developed for USGS (Part A and Part B) include 1. Final lidar data georeferenced to MS State Plane East Zone, NAD83, NAVD88, US Survey foot 2. Bare earth lidar data in ASCII format and LAS format 3. Raw point cloud lidar data in LAS format 4. Lidar intensity data in TIF format 5. Digital flight line index in ESRI-compatible format 6. Survey control report 7. Lidar processing report Products developed for MDEQ (Part A and Part B) include 1. Final lidar data georeferenced to MS State Plane East Zone, NAD83, NAVD88, US Survey foot 2. Bare earth lidar data in ASCII format and LAS format 3. Raw point cloud lidar data in LAS format 4. Lidar intensity data in TIF format 5. Floodmap breaklines in ESRI shapefile format 6. Digital flight line index in ESRI-compatible format 7. Survey control report 8. Lidar processing report Purpose: The acquisition, processing, and delivery of bare earth lidar data, raw point cloud lidar data, lidar intensity data, and floodmap breaklines covering Camp Shelby, MS was a coordinated effort between EarthData and MGI to support Mississippi Digital Earth Model (MDEM) and FEMA flood mapping requirements. Floodmap breaklines are intended to support DFIRM modeling and update only, and will be delivered to MDEQ for use on the DFIRM program. Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20060326 Ending_Date: 20060327 Currentness_Reference: Publication Date Status: Progress: Complete Maintenance_and_Update_Frequency: Unknown Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -89.4335226 East_Bounding_Coordinate: -88.730680 North_Bounding_Coordinate: 31.430612 South_Bounding_Coordinate: 30.841160 Keywords: Theme: Theme_Keyword_Thesaurus: EDI Thesaurus Theme_Keyword: lidar Theme_Keyword: DEM Theme_Keyword: Topographic Theme_Keyword: bare earth Theme_Keyword: intensity image Theme_Keyword: LAS Theme_Keyword: ASCII Theme_Keyword: raw point cloud Theme_Keyword: floodmap breaklines Place: Place_Keyword_Thesaurus: Geographic Names Information System Place_Keyword: EarthData Place_Keyword: Camp Shelby Place_Keyword: Mississippi Place_Keyword: USA Access_Constraints: None Use_Constraints: None Point_of_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: EarthData International, Inc. Contact_Person: Angela Worley Contact_Position: Project Manager Contact_Address: Address_Type: mailing and physical address Address: 7320 Executive Way City: Frederick State_or_Province: MD Postal_Code: 21704 Country: USA Contact_Voice_Telephone: 301-948-8550 x222 Contact_Facsimile_Telephone: 301-963-2064 Contact_Electronic_Mail_Address: aworley@earthdata.com Hours_of_Service: Monday through Friday, 8:30am to 5:00pm Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: Airborne lidar data was acquired at an altitude of 8,000 ft (2,438 m) above mean terrain with a swath width of 5,823.57 ft (1,775.03 m), which yields an average post spacing of lidar points of no greater than 9.84 ft (3 m). The project was designed to achieve a vertical accuracy of the lidar points at 7.28 in (18.5 cm) root mean square error (RMSE). Logical_Consistency_Report: Compliance with the accuracy standard was ensured by the placement of GPS ground control after the acquisition 1. The ground control and airborne GPS data stream were validated through a fully analytical boresight adjustment. 2. The digital terrain model (DTM) data were checked against the project control. 3. Lidar elevation data was validated through an inspection of edge matching and visual inspection for quality (artifact removal). Completeness_Report: 1. EarthData's proprietary software, Checkedb, for verification against ground survey points. 2. Terrascan, for verification of automated and manual editing and final QC of products. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: The lidar data fully comply with FEMA guidance as published in Appendix A, April, 2003. Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: The lidar data fully comply with FEMA guidance as published in Appendix A, April 2003. When compared to GPS survey grade points in generally flat non-vegetated areas, at least 95% of the positions have an error less than or equal to 37 cm (equivalent to root mean square error of 18.5 cm if errors were normally distributed). Lineage: Source_Information: Source_Citation: Citation_Information: Originator: EarthData International, Inc. (Aviation Division) Publication_Date: 20060412 Publication_Time: Unknown Title: Aerial Acquisition of Lidar Data for Camp Shelby, MS Edition: 1 Geospatial_Data_Presentation_Form: model Type_of_Source_Media: DVD Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 20070215 Source_Currentness_Reference: Ground Condition Source_Citation_Abbreviation: Aerial Lidar Acquisition Source_Contribution: MGI requested the collection of lidar data over Camp Shelby, MS. In response EarthData acquired the data from March 21 to April 12, 2006 using its aircraft with tail number N62912. Lidar data was captured using an ALS50 lidar system, including an inertial measuring unit (IMU) and a dual frequency GPS receiver. An additional GPS receiver was in constant operation over a National Geodetic Survey published point by EarthData at Hattiesburg- Bobby L. Chain Municipal Airport which was later tied into a local network by Waggoner Engineering, Inc. During the data acquisition, the receivers collected phase data at an epoch rate of 1 Hz. The solution from Camp Shelby, MS was found to be of high integrity and met the accuracy requirements for the project. These accuracy checks also verified that the data meets the guidelines outlined in FEMA's Guidelines and Specifications for Flood Hazard Mapping Partners and Appendix A, section 8, Airborne Light Detection and Ranging (LIDAR) Surveys. Airspeed - 130 knots Laser Pulse Rate - 38,000 kHz Field of View - 40 degrees Scan Rate - 20 Hz Source_Information: Source_Citation: Citation_Information: Originator: Waggoner Engineering, Inc. Publication_Date: 20060926 Title: Camp Shelby, Mississippi - Lidar Control Edition: 1 Geospatial_Data_Presentation_Form: diagram Type_of_Source_Media: electronic mail system Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 20060926 Source_Currentness_Reference: Ground Condition Source_Citation_Abbreviation: Ground Control Source_Contribution: Waggoner Engineering, Inc., under contract to EarthData successfully established ground control for Camp Shelby, MS. A total of 36 ground control points in Camp Shelby, MS were acquired. GPS was used to establish the control network. The horizontal datum was the North American Datum of 1983 (NAD83). The vertical datum was the North American Vertical Datum of 1988 (NAVD88). Process_Step: Process_Description: EarthData has developed a unique method for processing lidar data to identify and remove elevation points falling on vegetation, buildings, and other aboveground structures. The algorithms for filtering data were utilized within EarthData's proprietary software and commercial software written by TerraSolid. This software suite of tools provides efficient processing for small to large-scale, projects and has been incorporated into ISO 9001 compliant production work flows. The following is a 1. The technician performs calibrations on the data set. 2. The technician performed a visual inspection of the data to verify that the flight lines overlap correctly. The technician also verified that there were no voids, and that the data covered the project limits. The technician then selected a series of areas from the data set and inspected them where adjacent flight lines overlapped. These overlapping areas were merged and a process which utilizes 3-D Analyst and EarthData's proprietary software was run to detect and color code the differences in elevation values and profiles. The technician reviewed these plots and located the areas that contained systematic errors or distortions that were introduced by the lidar sensor. 3. Systematic distortions highlighted in step 2 were removed and the data was re-inspected. Corrections and adjustments can involve the application of angular deflection or compensation for curvature of the ground surface that can be introduced by crossing from one type of land cover to another. 4. The lidar data for each flight line was trimmed in batch for the removal of the overlap areas between flight lines. The data was checked against a control network to ensure that vertical requirements were maintained. Conversion to the client-specified datum and projections were then completed. The lidar flight line data sets were then segmented into adjoining tiles for batch processing and data management. 5. The initial batch-processing run removed 95% of points falling on vegetation. The algorithm also removed the points that fell on the edge of hard features such as structures, elevated roadways and bridges. 6. The operator interactively processed the data using lidar editing tools. During this final phase the operator generated a TIN based on a desired thematic layers to evaluate the automated classification performed in step 5. This allowed the operator to quickly re-classify points from one layer to another and recreate the TIN surface to see the effects of edits. Geo-referenced images were toggled on or off to aid the operator in identifying problem areas. The data was also examined with an automated profiling tool to aid the operator in the reclassification. 7. The final bare earth was written to an LAS 1.0 format and also converted to ASCII. 8. The point cloud data were delivered in LAS 1.0 format. Source_Used_Citation_Abbreviation: Lidar Process_Date: 20070215 Source_Produced_Citation_Abbreviation: Lidar Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: EarthData International, Inc. Contact_Person: Angela Worley Contact_Position: Project Manager Contact_Address: Address_Type: mailing and physical address Address: 7320 Executive Way City: Frederick State_or_Province: MD Postal_Code: 21704 Country: USA Contact_Voice_Telephone: 301-948-8550 x222 Contact_Facsimile_Telephone: 301-963-2064 Contact_Electronic_Mail_Address: aworley@earthdata.com Hours_of_Service: Monday through Friday, 8:30am to 5:00pm Process_Step: Process_Description: EarthData utilizes a combination of proprietary and COTS processes to generate intensity images from the lidar data. Intensity images are generated from the full points cloud (minus noise points) and the pixel width is typically matched to the post spacing of the lidar data to achieve the best resolution. The following steps are used to 1. Lidar point cloud is tiled to the deliverable tile layout. 2. All noise points, spikes, and wells are deleted out of the tiles. 3. An EarthData proprietary piece of software, EEBN2TIF is then used to process out the intensity values of the lidar. At this point, the pixel size is selected based on best fit or to match the client specification if noted in the SOW. 4. The software then generates TIF and TFW files for each tile. 5. ArcView is used to review and QC the tiles before delivery. 6. The lidar intensity data were delivered in TIF format. Source_Used_Citation_Abbreviation: Intensity Process_Date: 20070215 Source_Produced_Citation_Abbreviation: Lidar Intensity Values Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: EarthData International, Inc. Contact_Person: Angela Worley Contact_Position: Project Manager Contact_Address: Address_Type: mailing and physical address Address: 7320 Executive Way City: Frederick State_or_Province: MD Postal_Code: 21704 Country: USA Contact_Voice_Telephone: 301-948-8550 x222 Contact_Facsimile_Telephone: 301-963-2064 Contact_Electronic_Mail_Address: aworley@earthdata.com Hours_of_Service: Monday through Friday, 8:30am to 5:00pm Cloud_Cover: 0 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Grid_Coordinate_System: Grid_Coordinate_System_Name: Universal Transverse Mercator Universal_Transverse_Mercator: UTM_Zone_Number: 16 Transverse_Mercator: Scale_Factor_at_Central_Meridian: 0.999600 Longitude_of_Central_Meridian: -087.000000 Latitude_of_Projection_Origin: +00.000000 False_Easting: 500000.0 False_Northing: 0.00000 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: coordinate pair Coordinate_Representation: Abscissa_Resolution: 3 Ordinate_Resolution: 3 Planar_Distance_Units: Meters Geodetic_Model: Horizontal_Datum_Name: North American Datum of 1983 Ellipsoid_Name: Geodetic Reference System 80 Semi-major_Axis: 6378137.000000 Denominator_of_Flattening_Ratio: 298.257222 Vertical_Coordinate_System_Definition: Altitude_System_Definition: Altitude_Datum_Name: North American Vertical Datum of 1988 Altitude_Resolution: .65 Altitude_Distance_Units: Feet Altitude_Encoding_Method: Implicit coordinate Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: Mississippi Geographic Information, LLC Contact_Person: Bill McDonald Contact_Position: Project Manager Contact_Address: Address_Type: mailing and physical address Address: 143-A LeFleurs Square City: Jackson State_or_Province: MS Postal_Code: 39211 Country: USA Contact_Voice_Telephone: 601-355-9526 Contact_Facsimile_Telephone: 601-352-3945 Contact_Electronic_Mail_Address: Bill.McDonald@waggonereng.com Distribution_Liability: None Metadata_Reference_Information: Metadata_Date: 20070215 Metadata_Review_Date: 20070215 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: EarthData International, Inc. Contact_Person: Angela Worley Contact_Position: Project Manager Contact_Address: Address_Type: mailing and physical address Address: 7320 Executive Way City: Frederick State_or_Province: MD Postal_Code: 21704 Country: USA Contact_Voice_Telephone: 301-948-8550 x222 Contact_Facsimile_Telephone: 301-963-2064 Contact_Electronic_Mail_Address: aworley@earthdata.com Hours_of_Service: Monday through Friday, 8:30am to 5:00pm Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998