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Laser Footprint Size and Pointing Precision Analysis for LIDAR Systems
LiDAR Data Accuracy Analysis Laser scanning
2015/11/20
Laser footprint size and beam divergence angle tuning was found to affect LiDAR data accuracy and measurement precision because of beam axis shifting. The laser beam divergence angle is generally tuna...
Multi Sensor Airborne Systems: The Potential for In Situ Sensor Calibration
LiDAR Digital Camera GPS IMU Sensor Orientation Calibration
2015/11/20
Airborne LiDAR systems are integrated with a positioning and orientation system including GPS (Global Positioning System) and INS (Inertial Navigation System) to measure the exterior orientation of th...
LIDAR AND INS FUSION IN PERIODS OF GPS OUTAGES FOR MOBILE LASER SCANNING MAPPING SYSTEMS
Inertial Navigation Systems lidar Urban Navigation
2014/6/5
Mobile laser scanning systems are becoming an increasingly popular means to obtain 3D coverage on a large scale. To perform the mapping, the exact position of the vehicle must be known throughout the ...
Antenna systems with beam forming and beam steering capabilities for HF skywave radars
HF radars HF communication Skywaves ionospheric reflections Earth- ionosphere waveguide planar arrays
2010/10/12
Radiation characteristics of linearly phased, periodic, planar dipole arrays, which can be used as transmitting/receiving antenna systems for HF skywave radars, are investigated. Rectangular, triangul...