Results 31 to 40 of about 5,523 (200)

A Comparison of Standard Modeling Techniques Using Digital Aerial Imagery with National Elevation Datasets and Airborne LiDAR to Predict Size and Density Forest Metrics in the Sapphire Mountains MT, USA

ISPRS International Journal of Geo-Information, 2019
In recent years airborne Light Detection and Ranging (LiDAR) technology has received a great deal of attention. Using airborne LiDAR, analysts have successfully related height measurements to forest characteristics such as tree size, basal area, and ...
Robert Ahl, John Hogland, Steve Brown
doaj   +1 more source

Comparison of Field and Virtual Vegetation Surveys Conducted Using Uncrewed Aircraft System (UAS) Imagery at Two Coastal Marsh Restoration Projects

Remote Sensing
Traditional field vegetation plot surveys are critical for monitoring ecosystem restoration performance and include visual observations to quantitatively measure plants (e.g., species composition and abundance).
Aaron N. Schad, Molly K. Reif, Joseph H. Harwood, Christopher L. Macon, Lynde L. Dodd, Katie L. Vasquez, Kevin D. Philley, Glenn E. Dobson, Katie M. Steinmetz   +8 more
doaj   +1 more source

Scan Line Intensity-Elevation Ratio (SLIER): An Airborne LiDAR Ratio Index for Automatic Water Surface Mapping

Remote Sensing, 2019
Owing to the characteristics of how a laser interacts with the water surface and water column, the measured Light Detection and Ranging (LiDAR) intensity values are different with respect to the laser wavelength, the scanning geometry and the reflection ...
Wai Yeung Yan, Ahmed Shaker, Paul E. LaRocque   +2 more
doaj   +1 more source

Airborne Raman Lidar and its Applications for Atmospheric Process Studies

EPJ Web of Conferences, 2016
Although ground-base Raman lidars are widely used for atmospheric observations, the capabilities of airborne Raman lidar is not fully explored. Here we presented two recently developed airborne Raman lidar systems for the studies of atmospheric boundary ...
Wang Zhien, Wechsler Perry J., Mahon Nick, Wu Decheng, Liu Bo, Burkhart Matthew, Glover Brent, Kuestner William, Welch Wayne, Thomson Andrew   +9 more
doaj   +1 more source

Assessing plant water status: Part 2 – Non‐destructive and remote sensing approaches

Journal of the Science of Food and Agriculture, EarlyView.
Abstract Precise, real time and non‐destructive assessment of plant water status is important for advancing plant physiological understanding, optimizing water usage, improving crop resilience and supporting precision agriculture in the face of increasingly variable climatic conditions.
Naila Farooq, Bo Zhang, Bastian Leander Franzisky, Tasawer Abbas, Jochen Taiber, Martin Koch, Ian C Dodd, Christoph‐Martin Geilfus   +7 more
wiley   +1 more source

All-Fiber Airborne Coherent Doppler Lidar to Measure Wind Profiles

EPJ Web of Conferences, 2016
An all-fiber airborne pulsed coherent Doppler lidar (CDL) prototype at 1.54μm is developed to measure wind profiles in the lower troposphere layer. The all-fiber single frequency pulsed laser is operated with pulse energy of 300μJ, pulse width of 400ns ...
Liu Jiqiao, Zhu Xiaopeng, Diao Weifeng, Zhang Xin, Liu Yuan, Bi Decang, Jiang Liyuan, Shi Wei, Zhu Xiaolei, Chen Weibiao   +9 more
doaj   +1 more source

Habitat characteristics along spring migration routes of elk, mule deer, and pronghorn in the southern San Juan Mountains

The Journal of Wildlife Management, EarlyView.
We evaluated habitat characteristics of spring migration routes and stopover sites for adult female elk (Cervus canadensis), mule deer (Odocoileus hemionus), and pronghorn (Antilocapra americana) in the San Juan Mountains (2021–2022) and found species‐specific differences in vegetation structure, terrain, and proximity to land cover types relative to ...
Joanna R. Ennis, Nicole M. Tatman, Steven E. Sesnie, James W. Cain III   +3 more
wiley   +1 more source

Airborne Lidar: Advances in Discrete Return Technology for 3D Vegetation Mapping

Remote Sensing, 2011
Conventional discrete return airborne lidar systems, used in the commercial sector for efficient generation of high quality spatial data, have been considered for the past decade to be an ideal choice for various mapping applications.
Valerie Ussyshkin, Livia Theriault
doaj   +1 more source

A Fusion Approach to Detect Traffic Signs Using Registered Color Images and Noisy Airborne LiDAR Data

Applied Sciences, 2020
Traffic sign detection is considered as one of the active research topics in transportation and computer vision. The previous works mainly focus on detecting traffic signs in images or in mobile light detection and ranging (LiDAR) data. In this paper, we
Mohammadreza Javanmardi, Ziqi Song, Xiaojun Qi   +2 more
doaj   +1 more source

Airborne LiDAR Intensity Correction Based on a New Method for Incidence Angle Correction for Improving Land-Cover Classification

Remote Sensing, 2021
Light detection and range (LiDAR) intensity is an important feature describing the characteristics of a target. The direct use of original intensity values has limitations for users, because the same objects may have different spectra, while different ...
Qiong Wu, Ruofei Zhong, Pinliang Dong, You Mo, Yunxiang Jin   +4 more
doaj   +1 more source