2017 LiDAR

2017_LiDAR.jpgIn 2017, the North Central Texas Council of Governments facilitated the cooperative purchase of 0.5-Meter LiDAR (4PPM) for 1340  square miles of the NCTCOG region.  The contractors for this project were AECOM and Woolpert. The LiDAR data was collected in January through March 2017 (leaf-off) and is available for purchase via DFWMaps Marketplace according to the following price schedule.

 

The LiDAR data are sold in  3,000' x 2,000' tiles, or 0.215 square miles. Sample files and a shapefile of the tile structure may be downloaded below.

LiDAR Sample - LAS Format
SDCP Index Grid

Specifications

Camera Leica ALS80 LiDAR System
Nominal Pulse Spacing 0.5 Meter, 4 points per meter
Accuracy 9.25cm vertical accuracy in non-restricted airspace and 12.5cm vertical accuracy in restricted airspace.
Relative Accuracy <=6 RMSEz within individual swaths and <=8cm within swath overlap
Measurement Rate 500kHz
Returns up to 5
Capture January-March 2017
Ground Conditions Leaf off; free from snow, haze, fog, or dust;  streams within normal banks
Coordinate System Texas State Plane, North Central Zone
Horizontal Datum NAD 83
Vertical Datum NAVD88
Units US Survey Feet
Breaklines Hydrologic flattening
Format LAS 1.2, classified text file, bare earth DEM, first return DSM
Classification Data is classfied according to ASPRS Classification Standards with 85% of buildings identified.


More information on the 2017 project can be found in the project level metadata.

For questions regarding the 2017 LiDAR project, send us an email.