LiDAR 101

What is LiDAR?

LiDAR stands for Light Detection and Ranging (LiDAR) – LiDAR is an active sensory system that uses laser light, an inertial measurement unit (IMU), and Global Positioning System (GPS) to rapidly measure distances between the sensor and points on the ground. This creates dense, highly accurate elevation data. Using GPS calibration sites within LiDAR collection grids that verify the GPS to provide "Ground Truth" for LiDAR data analysis. LiDAR analysis is a growing need in the GIS community and CompassData is at the forefront of this field. CompassData establishes and manages multi-use GPS calibration sites for digital sensors and LiDAR, working with clients such as the National Oceanic and Atmospheric Administration (NOAA) and the United States Geological Survey (USGS).


We offer a variety of services to our clients including

Flight Planning


Post Processing



UAS LiDAR Photogrammetry Remote Sensing

Our LiDAR Solutions


We examine our client's goals and analyze the area of interest, making crucial decisions whether a drone or an aircraft is needed for the scope of the project. Once the details of the project are set, we set ground control points with targets and capture data with our LiDAR sensor. We can get an extremely high point density per square meter which can build accurate models.


CompassData’s team includes post-processing professionals who have the expertise to ensure Quality Control/Quality Assurance for LiDAR deliverables. Postprocessing from CompassData includes all relevant LiDAR attributes: classification, intensity, return information, GPS timestamp, flight line information, etc. We have the expertise to post-process any LiDAR to professional standards.

Quality Assurance / Quality Control

CompassData Offers Calibration Capability for LiDAR Evaluation, Testing and Bore sighting.  CompassData provides crucial Quality Control for LiDAR data. While independently derived Ground Control Points are a crucial element in LiDAR quality evaluation, calibration can be a complicated procedure. We can provide the GCPs for your in-house calibration, or we can do Quality Control for you, using our proprietary GCPs and a least-squares minimization technique designed to ensure the best calibration quality. Our QA/QC quantitative check ensures vertical accuracy, horizontal accuracy, clustering of points, and nominal posting.

Contact us for strategic flight planning, utilizing our GCP archive, our target control for new GCPs and imagery post processing. We got you covered.


To arrange a consultation or workshop, send us a message.