| 2006 FEMA New Jersey Flood Mitigation Lidar: Middlesex County |
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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.
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