- Related Research Areas
- Earth Surface & Interior
This project will demonstrate the viability of high-altitude laser swath mapping for the generation of geodetic, research-quality topographic data sets that will be of use to EarthScope and NASA investigations. We will demonstrate that high-altitude mapping is a cost-effective, efficient and appropriate approach to providing national coverage. Specifically we will: (1) Perform a flight demonstration of precise and accurate high-altitude lidar using NASA's current state-of-the-art laser swath system (LVIS). We will also develop and collect data from sophisticated in-flight calibration maneuvers that will permit the reliable production of geodetic quality lidar data. (2) Investigate the effects of various data collection and processing strategies on data precision and accuracy and generate a final, validated high-altitude lidar data set. Effects on the data accuracy will be quantified by comparison with ground GPS and small-footprint lidar data. (3) Integrating our results, we will generate a set of procedures (including the operation of equipment, in-flight maneuvers, ancillary ground data collection etc.) that when followed, enable the generation of validated lidar data over an area from high-altitude that achieves the relevant data precision and accuracy. (4) Perform a validated demonstration of the collection of lidar data over a large area from high altitude and achieve the appropriate geolocation precision and accuracy. The results will strengthen EarthScope and NASA lidar data collection activities by establishing a set of procedures that can be followed to enable collection of precise and accurate research-grade laser data, not only at low altitudes but also at high altitudes where increased data coverage at low incident angles can be achieved. This proposal also has implications for wider ranging activities such as the National Academy of Sciences "Elevation for the Nation" recommendation from which the USGS, NASA and other agencies have proposed the "National Lidar Initiative".
Project PI: Michelle Hofton/University of Maryland
University of Maryland College Park Dept of Geography 1149A LeFrak Hall College Park, MD 20742
Phone: 301-405 8543
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