Airborne Light Detection and Ranging (LiDAR) is a method of survey by remote sensing that obtains three-dimensional data points to digitally recreate the lands surface. This is achieved through a Global Positioning System (GPS) and pulses of laser light being emitted from a sensor. The GPS records the x and y coordinates while the laser records the z coordinate. The time required for the energy from the laser light to reach the target and return to the sensor determines the distance between the two, providing the height information.
In May 2013 airborne LiDAR data was collected for the CARRA project in three studies areas by Leading Edge Geomatics.This collected LiDAR data will be used to create Digital Elevation Models (DEM) to recreate the 3D landscape of these study areas. Each of these DEMs will then be analysed for angle of slope and be inundated by projected sea-level rise to assist with coastal vulnerability classification in task 2.