Results 201 to 210 of about 165,753 (253)

Improved country-wide estimation of above-ground tropical forest biomass using locally calibrated GEDI spaceborne LiDAR data

Environmental Research Letters
NASA’s Global Ecosystem Dynamics Investigation (GEDI) presents an unprecedented opportunity for cost-effective estimations of above-ground biomass density (AGBD) using spaceborne Light Detection And Ranging technology.
Yuchuan Zhou, David Taylor, Hao Tang
semanticscholar   +1 more source

A spaceborne adaptive lidar for earth imaging

2017 IEEE International Geoscience and Remote Sensing Symposium (IGARSS), 2017
Space-based laser remote sensing has become a key contributor to understanding our Earth and other planetary bodies. The steady innovation in laser-related technologies provides us new opportunities and challenges in creating laser-related instruments and sensors that will expand our knowledge and extend our reach. This paper illustrates an approach to
Carl Weimer, Mike Lieber, Reuben Rohrschneider, Lyle Ruppert   +3 more
openaire   +1 more source

Quantifying Surface Reflectivity for Spaceborne Lidar Missions

IGARSS 2008 - 2008 IEEE International Geoscience and Remote Sensing Symposium, 2008
Spaceborne lidar missions are being studied to estimate atmospheric concentrations of CO2, water vapour and O3, as well as for measuring surface biophysical properties. Lidar instruments typically observe the highest possible surface reflectance due to observing in the retroreflection peak (the so-called 'hotspot'), where shadowing on the surface is ...
M. I. Disney, P. Lewis, M. Bouvet
openaire   +1 more source

Effect of wind speed on marine aerosol optical properties over remote oceans with use of spaceborne lidar observations

Atmospheric Chemistry and Physics
. Marine aerosol affects the global energy budget and regional weather. The production of marine aerosol is primarily driven by wind at the sea–air interface.
Kangwen Sun, Guangyao Dai, Songhua Wu, Oliver Reitebuch, H. Baars, Jiqiao Liu, Suping Zhang   +6 more
semanticscholar   +1 more source

Overview of Japan's spaceborne vegetation lidar mission

SPIE Proceedings, 2013
Vegetation LIDAR, which measures an accurate canopy height, has been studied by JAXA. Canopy height is a very important parameter to estimate forest biomass, and global measurement of accurate canopy height leads to better understanding of the global carbon cycle.
Jumpei Murooka, Takashi Kobayashi, Tadashi Imai, Keiko Suzuki, Daisuke Sakaizawa, Shiro Yamakawa, Ryota Sato, Haruo Sawada, Kazuhiro Asai   +8 more
openaire   +1 more source

Modern concept of a spaceborne lidar

SPIE Proceedings, 1999
The experience on the first backscatter lidar operating in space (LITE, USA, 1994; BALKAN, Russia, 1995 - 1997; ALISSA, Russia-France, 1996 - present time) is analyzed to provide a basis for guiding the development of new orbital lidars. Considering the status of development of laser sensing methods harnessing elastic scattering and needs for obtaining
openaire   +1 more source

Obtaining a ground-based lidar geometric form factor using coincident spaceborne lidar measurements

Applied Optics, 2009
We present a method to determine the geometric form factor of a ground-based lidar using simultaneous lidar measurements made from the ground and from space. The theoretical basis is described. The feasibility of the method is demonstrated by applying it to the measurement data acquired by the Cloud Aerosol Lidar Infrared Pathfinder Satellite ...
Jia, Su, M Patrick, McCormick, Zhaoyan, Liu, Kevin H, Leavor, Robert B, Lee, Jasper, Lewis, Michael T, Hill   +6 more
openaire   +2 more sources

Unstable Resonator Considerations For Spaceborne Coherent Lidar Applications

SPIE Proceedings, 1989
We summarize the results of an investigation into the relative merits of diffractive and radially-variable unstable resonator couplers for use in heterodyne-detection lidar systems, emphasizing overall lidar system efficiency.
David M. Tratt, Robert T. Menzies
openaire   +1 more source

Design Considerations for Spaceborne Lidars

1987
Spaceborne lidars promise the capability to determine important meteorological parameters, with a height resolution and accuracy required for improved weather forecasting and understanding of the climate. Lidars can advantageously complement passive sounders due to their ability to perform depth resolved measurements with excellent vertical resolution,
openaire   +1 more source

LIDAR add-on for spaceborne optical communication terminals

2017 IEEE International Conference on Space Optical Systems and Applications (ICSOS), 2017
Optical communication terminals consist of various subsystems that are common to LIDAR systems, i.e. for ranging and 3D surface mapping. This paper explores how to modify such a communications payload to serve as a submeter precision LIDAR, with minimum impact on complexity, power consumption and mass increase.
Clemens Heese, Zoran Sodnik, David Orchard, Peter Kightley   +3 more
openaire   +1 more source