Mississippi River Delta Project Contract: W912EE-07-D-0005
Mississippi River Delta Project Contract: W912EE-07-D-0005
FGDC Metadata
Description Spatial Data Structure Data Quality Data Source Metadata
+ Resource Description
Information used to reference the data.
Title: Mississippi River Delta Project Contract: W912EE-07-D-0005
Originators: Photo Science, Inc.
Publication date: Unpublished Material
Data type: LAS Files
A characterization of the data, including its intended use and limitations.
      		LiDAR collected at 1.0 points per square meter (1.0m GSD) for the 
					entire portion of the Mississippi River Delta in the Vicksburg District.  
					This area was flown during snow free and leaf-off conditions.
      	Lifts were planned to meet project specifications and were flown under cloud-free conditions in
      	order to collect LiDAR points at an average of 1.0 meter point spacing.  This allows the user
      	to create Intensity Images, Break Lines, and fully Classified LiDAR LAS files.
Dataset credit:
Photo Science, Inc. flew and processed the LiDAR data.
Data Type
How the data are represented, formatted and maintained by the data producing organization.
Data type: LAS Files
Native dataset environment: MicroStation Version 8; TerraScan Version 10; Optech DASHMap 4.1801; TerraModeler Version 10; GeoCue Version; ESRI ArcGIS 9.3.1; ALS Post Processor 2.70 Build #15; Windows XP Operating System
Time Period of Data
Time period(s) for which the data corresponds to the currentness reference.
Beginning date: 20090219
Ending date: 20100802
Currentness reference:
Ground Condition
The state of and maintenance information for the data.
Data status: Complete
Update frequency: Unknown
Key Words
Words or phrases that summarize certain aspects of the data.
Keywords: Model, LiDAR, DEM, Raster, Breaklines, Contours, ASCII, TIN, Remote Sensing
Keyword thesaurus: none
Keywords: Mississippi, Warren, Issaquena, Yazoo, Sharkey, Holmes, Humphreys, Washington, Sunflower, Leflore, Carroll, Bolivar, Grenada, Tallahatchie, Yalobusha, Coahoma, Quitman, Panola, Tunica, Tate, DeSoto, US
Keyword thesaurus: None
Data Access Constraints
Restrictions and legal prerequisites for accessing or using the data after access is granted.
Access constraints:
Use constraints:
    		None. However, users should be aware that temporal changes may have occurred since 
    		this data set was collected and that some parts of the data may no longer represent actual 
    		surface conditions.  Users should not use the data for critical applications without a full 
    		awareness of it's limitations.
+ Spatial Reference Information
Horizontal Coordinate System
Reference system from which linear or angular quantities are measured and assigned to the position that a point occupies.
Coordinate System Details
Grid coordinate system
Grid coordinate system name: State Plane Coordinate System 1983
State Plane Coordinate System:
SPCS xone identifier: 2302
Transverse Mercator:
Scale factor at central meridian: 0.999950
Longitude of central meridian: -90.333333
Latitude of projection origin: 29.5
False easting: 2296583.333333
False northing: 0.0
Planar Coordinate Information
Planar coordinate encoding method: coordinate pair
Coordinate representation:
Abscissa resolution: 0.000328
Ordinate resolution: 0.000328
Planar distance units: survey feet
Geodetic model
Horizontal datum name: North American Datum of 1983
Ellipsoid name: Geodetic Reference System 1980
Semi-major axis: 6378137.000000
Denominator of flattening ratio: 298.257222
Spatial Domain
The geographic areal domain of the data that describes the western, eastern, northern, and southern geographic limits of data coverage.
Bounding Coordinates
In Unprojected coordinates (geographic)
Boundary Coordinate
West -91.263987 (longitude)
East -89.716395 (longitude)
North 35.080227 (latitude)
South 32.299483 (latitude)
+ Data Structure and Attribute Information
Summary of the information content of the data, including other references to complete descriptions of entity types, attributes, and attribute values for the data.
Entity and attribute overview:
LAS 1.2 files (ASPRS Classes (1,2,4,5,7,9,12); Breakline File Shapefiles; Breakline File ARC Generate; 1 Foot Contours;
       10 Foot Contours; ASCII Last Pulse All Shots Ellipsoidal; ASCII Last Pulse All Shots Orthometric; ASCII Last Pulse BareEarth Orthometric;
       5' BareEarth Raster DEM ; 5' First Pulse All Shots Raster DEM; 5' First Pulse All Shots ASCII; ESRI ARC/GIS TIN
Entity and attribute detailed citation:
All deliverables meet specifications in contract.  LAS Files meet ASPRS Classification Standards.
+ Data Quality and Accuracy Information
Information about the fidelity of relationships, data quality and accuracy tests, omissions, selection criteria, generalization, and definitions used to derive the data.
Logical consistency report:
Deliverables were tested by both Photo Science for both vertical and horizontal 
    accuracy.  All data are seamless from one tile to the next, no gaps or no-data areas exists.
Completeness report:
Datasets contain complete coverage of tiles.
Attribute Accuracy
Accuracy of the identification of data entities, features and assignment of attribute values.
Attribute accuracy report:
The project area requires LiDAR to be collected on average of 1.0 meter point spacing 
        or better and vertical accuracy of 15.0 centimeters RMSE or better to support 2' contour 
        generation when combined with breaklines.
Positional Accuracy
Accuracy of the positional aspects of the data.
Vertical accuracy report:
Deliverables were tested by both Photo Science for both vertical and horizontal 
        accuracy.  All data are seamless from one tile to the next, no gaps or no-data areas exists.  
        The vertical unit of the data file is in survey feet with 2-decimal point precision.
Vertical positional accuracy assessment:
Accuracy values
RMSE in Meters
+ Data Source and Process Information
Data Sources
Information about the source data used to construct or derive the data.
Data source information
Title: LiDAR
Originators: Photo Science, Inc.
Publication date: 2010
Data type: digital data
Media: hard drive
Source contribution:
LiDAR points were used to produce the deliverables.
Beginning date: 20090219
Ending date: 20100802
Currentness reference:
ground condition
Process Steps
Information about events, parameters, tolerances and techniques applied to construct or derive the data.
Process step information
Process Step 1
Process description:
        Applanix software was used in the post processing of the 
        airborne GPS and inertial data that is critical to the positioning and  
        orientation of the sensor during all flights.  POSPac MMS provides 
        the smoothed best estimate of trajectory (SBET) that is necessary 
        for Optech's post processor to develop the point cloud from the 
        LiDAR missions.  The point cloud is the mathematical three dimensional 
        collection of all returns from all laser pulses as determined from 
        the aerial mission.  At this point this data is ready for analysis, 
        classification, and filtering to generate a bare earth surface model 
        in which the above ground features are removed from the data set.
        The point cloud was manipulated within the Optech or Leica software; GeoCue, 
        TerraScan, and TerraModeler software was used for the automated 
        data classification, manual cleanup, and bare earth generation from 
        this data.  Project specific macros were used to classify the ground 
        and to remove the side overlap between parallel flight lines.  
        All data was manually reviewed and any remaining artifacts removed 
        using functionality provided by TerraScan and TerraModeler.
        Class 2 LIDAR was used to create a bare earth surface model.  The surface model was then used 
        to heads-up digitize 2D breaklines of inland streams and rivers with a 30 foot nominal width and 
        Inland Ponds and Lakes of 0.25 acres or greater.
        Elevation values were assigned to all Inland Ponds and Lakes using TerraModeler functionality.
        Elevation values were assigned to all Inland streams and rivers using Photo Science proprietary software.
        All Class 2 LIDAR data inside of the collected breaklines were then classified to Class 9 
        using TerraScan macro functionality.  
        The breakline files were then translated to ESRI Shapefile and ARC Generate format using ESRI conversion tools.

        Breaklines were used to reclassify lakes, ponds, and inland drains.
        Data was then run through additional macros to ensure deliverable classification 
        levels matching LAS ASPRS Classification structure.  GeoCue functionality was then 
        used to ensure correct LAS Version.  In house software was used as a final 
        QA/QC check to provide LAS Analysis of the delivered tiles.
        Buffered LAS files were created in GeoCue to provide overedge to the 
        DEM creation.  These tiles were then run through automated scripting 
        within ArcMap and were combined with the Hydro Flattened Breaklines 
        to create the 5' DEM.  Final DEM tiles were clipped to the tile boundary in order to provide a seamless dataset.  

        A manual QA review of the tiles was completed in ArcMap to ensure full coverage with 
        no gaps or slivers within the project area.
Process date: 2010
Data Source used
Title: LiDAR
Originators: Photo Science, Inc.
Publication date: 2010
Data type: digital data
Media: hard drive
Source contribution:
LiDAR points were used to produce the deliverables.
Beginning date: 20090219
Ending date: 20100802
Currentness reference:
ground condition
Data Source produced
LiDAR post-processed data
Hydro Flattening Break Lines
+ Metadata Reference
Metadata Date
Dates associated with creating, updating and reviewing the metadata.
Last updated: 20100802
Metadata Point of Contact
Contact information for the individual or organization responsible for the metadata information.
Organization: Photo Science, Inc.
Person: Mark Meade
Phone: 859-277-8700
Address type: mailing and physical address
2670 Wilhite Drive
City: Lexington
State or Province: KY
Postal code: 40503
Country: USA
Metadata Standards
Description of the metadata standard used to document the data and reference to any additional extended profiles to the standard used by the metadata producer.
Standard name: FGDC Content Standard for Digital Geospatial Metadata
Standard version: FGDC-STD-001-1998
FGDC Plus Metadata Stylesheet
Stylesheet: FGDC Plus Stylesheet
File name: FGDC Plus.xsl
Version: 2.3
Description: This metadata is displayed using the FGDC Plus Stylesheet, which is an XSL template that can be used with ArcGIS software to display metadata. It displays metadata elements defined in the Content Standard for Digital Geospatial Metadata (CSDGM) - aka FGDC Standard, the ESRI Profile of CSDGM, the Biological Data Profile of CSDGM, and the Shoreline Data Profile of CSDGM. CSDGM is the US Federal Metadata standard. The Federal Geographic Data Committee originally adopted the CSDGM in 1994 and revised it in 1998. According to Executive Order 12096 all Federal agencies are ordered to use this standard to document geospatial data created as of January, 1995. The standard is often referred to as the FGDC Metadata Standard and has been implemented beyond the federal level with State and local governments adopting the metadata standard as well. The Biological Data Profile broadens the application of the CSDGM so that it is more easily applied to biological data that are not explicitly geographic (laboratory results, field notes, specimen collections, research reports) but can be associated with a geographic location. Includes taxonomical vocabulary. The Shoreline Data Profile addresses variability in the definition and mapping of shorelines by providing a standardized set of terms and data elements required to support metadata for shoreline and coastal data sets. The FGDC Plus Stylesheet includes the Dublin Core Metadata Element Set. It supports W3C DOM compatible browsers such as IE7, IE6, Netscape 7, and Mozilla Firefox. It is in the public domain and may be freely used, modified, and redistributed. It is provided "AS-IS" without warranty or technical support.
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