geospatial analysis of lambeau field using lidar images
TRANSCRIPT
Geospatial Analysis of Lambeau Field Using LIDAR Imagery Christopher Chapman
University of North Alabama
Geography Department
LIDAR imagery of
the above AOI is
flown and data is
processed
(below) via LIDAR
instrumentation.
(L) 3D LIDAR image of Lambeau Field and
parking lot that shows elevation. Blocks
near stadium and in lot are cars and light
poles. (B)Leo Frigo Memorial Bridge. (added for
admiration)
LIDAR (Light Detection and
Ranging) is a remote
sensing technology that
collects 3-dimensional point
clouds of the Earth’s
surface. LIDAR
instrumentation uses a laser
scanner with up to 400,000
pulses of light per second.
The laser transmits pulses
and records the time delay
between a light pulse
transmission and reception
to calculate elevation
values. These values are
integrated with information
from the aircraft’s Global
Positioning System (GPS)
and orientation (pitch, roll,
and yaw) data from inertial
measurement technology
to produce point cloud
data. Each data point is
recorded with precise
horizontal position, vertical
elevation, and other
attribute values.
Point cloud data represent the elevation of landscape features
including bare earth, trees and buildings. Topographic LIDAR instruments
use wavelengths in the near-infrared regions of the spectrum with a
Nominal Pulse Spacing (NPS) of 3 meters or finer.
Sources: USGS Earth Explorer, Packers.com Date: 4/29/2015