|2007 Northwest Florida Water Management District (NWFWMD) Lidar: North Jefferson County
|LIDAR data is remotely sensed high-resolution elevation data collected by an airborne
collection platform. Using a combination of laser range finding, GPS positioning and
inertial measurement technologies; LIDAR instruments are able to make highly detailed
Digital Elevation Models (DEMs) of the earth’s terrain, man-made structures and vegetation.
Using a LH Systems ALS50 Light Detection And Ranging (LiDAR) system, 262 flight lines
of high density (submeter ground sample distance) data were collected in the northern
half of Jefferson County in Florida. This data set was collected at the same time
as the collection for portions of Bay, Calhoun, Jackson and Washington Counties. Collectively,
these data sets cover approximately 1201 square miles. The Jefferson County project
covers approximately 513 square miles. The data acquisition occurred in 17 missions
between February 22, 2007 and March 13, 2007. Multiple returns were recorded for each
laser pulse along with an intensity value for each return. This data was collected
at sub-meter resolution to provide average point spacing of 0.7 m for collected points.
Up to 5 returns were recorded for each pulse in addition to an intensity value.