NRCS Massachusetts is funding the acquisition of enhanced-specification LIDAR for Barnstable County (Cape Cod), Massachusetts. The base specifications and deliverables are detailed in the USGS National Geospatial Program Base LIDAR Specification (Version 12), available for download on our documents page.
The Barnstable County enhancements include:
A higher nominal pulse spacing (NPS) of 1.0 meter;
Increased vertical accuracy of 9.25cm RMSE2;
Tidal coordination of acquisition flights to meet a ï¿½MLT +/- 90 minutesï¿½ standard where flights are not to occur during ï¿½neap tideï¿½ weeks;
A 1-meter resolution Bare Earth Digital Elevation Model (DEM).
The pulse of light emitted from the aircraft during LIDAR collection returns different information about the surface that it encounters.
Pulse backscatter sensed in the aircraft helps to classify ï¿½returnï¿½ rank and eventually to aid creation of bare-earth terrain and first-return surfaces. From Gatziolis & Anderson (2008).