2006 FEMA New Jersey Flood Mitigation Lidar: Middlesex County
This kmz file shows the extent of coverage for the 2006 FEMA Middlesex County, NJ lidar data set.
LIDAR data is remotely sensed high-resolution elevation data collected by an airborne collection platform. By positioning laser range finding with the use of 1 second GPS with 100hz inertial measurement unit corrections Terrapoint's LIDAR instruments are able to make highly detailed geospatial elevation products of the ground, man-made structures and vegetation. The LiDAR flightlines for this project were planned for a 50% acquisition overlap. The nominal resolution of this project without overlap is 1.37m spacing, but effectively is 2.74m with overlap factored. Four returns were recorded for each pulse in addition to an intensity value. GPS Week Time, Flightline number and scan angle attributes were provided for each LiDAR point. Data is provided as random points, in LAS v1.0 format, classified according to ASPRS Class Code 1= Undefined, 2=Ground.
|Other Access||Online access information not available.|
|Distributor||DOC/NOAA/NOS/OCM > Office for Coastal Management, National Ocean Service, National
Oceanic and Atmospheric Administration, U.S. Department of Commerce
|Dataset Point of Contact||Federal Emergency Management Agency, Region II
Documentation links not available.
|Data Presentation Form:|| Digital image
|Dataset Progress Status||Complete|
|Data Update Frequency:||Not planned|
Type Of Scanner = Optech 3100EA Data Acquisition Height = 1550 meters AGL Scanner Field Of View = 40 degrees Scan Frequency = 32.9 Hertz Pulse Repetition Rate = 71 Kilohertz Aircraft Speed = 180 Knots Swath Width = 1128 m Nominal Ground Sample Distance = 1.37 meters (no overlap) Number of Returns Per Pulse = 4 (first, last, intermediate) Distance Between Flight Lines = 564 Format: LAS 1.0 ASPRS Class Code 1=Undefined, 2=Ground First of many pulse and intermediate returns were not considered in the bare earth ground. Please note that the LiDAR intensity is not calibrated or normalized. The intensity value is meant to provide relative signal return strengths for features imaged by the sensor.
|Purpose:||The purpose of this LiDAR data is to produce high accuracy 3D elevation based geospatial products for Middlesex County, New Jersey.|
|Time Period:||2006-10-08 to 2006-10-11|
|Spatial Reference System:||urn:ogc:def:crs:EPSG::4269|
|Spatial Bounding Box Coordinates:||
|Spatial Coverage Map:|
|Use Constraints||No constraint information available|
|Fees||Fee information not available.|
Last Modified: 2013-06-11
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