Slope can be defined as the angle, inclination, steepness, or gradient of a straight line. Slope often is used to describe the steepness of the ground’s surface. Slope can be measured as the rise (the increase in elevation in some unit of measure) over the run (the horizontal distance measured in the same units as the rise). Many geographic information systems (GIS) can analyze digital elevation data (elevation points, contour lines, digital elevation models, etc.) and derive both slope and …
What is LIDAR?
LIDAR (Light Detection and Ranging) is a remote sensing technology that uses a laser beam of light to measure the distance from a LIDAR sensor to distant objects. Its operation is similar to how SONAR measures distances underwater using sound pulses.
LIDAR often is used to measure the height of the ground’s surface and the height of features on the ground. In this case, a LIDAR sensor, mounted in a plane, is flown over the area to be imaged. The …