期刊
REMOTE SENSING
卷 8, 期 11, 页码 -出版社
MDPI
DOI: 10.3390/rs8110936
关键词
airborne laser scanning; mapping lidar; multispectral lidar; lidar bathymetry; lidar accuracy; lidar range resolution; active imagery
类别
资金
- United States National Science Foundation Division of Earth Sciences, Instrumentation and Facilities Program [EAR 1339015]
- Division Of Earth Sciences
- Directorate For Geosciences [1339015] Funding Source: National Science Foundation
In this paper we present a description of a new multispectral airborne mapping light detection and ranging (lidar) along with performance results obtained from two years of data collection and test campaigns. The Titan multiwave lidar is manufactured by Teledyne Optech Inc. (Toronto, ON, Canada) and emits laser pulses in the 1550, 1064 and 532 nm wavelengths simultaneously through a single oscillating mirror scanner at pulse repetition frequencies (PRF) that range from 50 to 300 kHz per wavelength (max combined PRF of 900 kHz). The Titan system can perform simultaneous mapping in terrestrial and very shallow water environments and its multispectral capability enables new applications, such as the production of false color active imagery derived from the lidar return intensities and the automated classification of target and land covers. Field tests and mapping projects performed over the past two years demonstrate capabilities to classify five land covers in urban environments with an accuracy of 90%, map bathymetry under more than 15 m of water, and map thick vegetation canopies at sub-meter vertical resolutions. In addition to its multispectral and performance characteristics, the Titan system is designed with several redundancies and diversity schemes that have proven to be beneficial for both operations and the improvement of data quality.
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