Results 31 to 40 of about 27,319 (300)

Combining optical satellite data and airborne laser scanner data for vegetation classification [PDF]

, 2011
The aim of this study was to investigate to which degree the accuracy of vegetation classification could be improved by combining optical satellite data and airborne laser scanner (ALS) data, compared with using satellite data only.
Nordkvist, Karin,, Sveriges lantbruksuniversitet., Olsson, Håkan,, Holmgren, Johan,, Håkan Olsson, Granholm, Ann-Helen, Karin Nordkvist, Nordkvist, Karin, Johan Holmgren, Ann-Helen Granholm, Holmgren, Johan, Nilsson, Mats,, Nilsson, Mats, Olsson, Håkan, Granholm, Ann-Helen,, Mats Nilsson   +15 more
core   +1 more source

A data-adaptive network design for the regional gravity field modelling using spherical radial basis functions

Geodesy and Geodynamics
A high-precision regional gravity field model is significant in various geodesy applications. In the field of modelling regional gravity fields, the spherical radial basis functions (SRBFs) approach has recently gained widespread attention, while the ...
Fang Zhang, Huanling Liu, Hanjiang Wen
doaj   +1 more source

Interference and Protection in Satellite Laser Communication

天地一体化信息网络, 2023
In order to explore the safety protection technologies for various external interferences in satellite laser communication, four interference sources in the satellite laser communication link and their principles were introduced, included atmospheric ...
Chenzhe LAO, Jianfeng SUN
doaj   +2 more sources

Design considerations for the use of laser-plasma accelerators for advanced space radiation studies [PDF]

, 2012
We present design considerations for the use of laser-plasma accelerators for mimicking space radiation and testing space-grade electronics. This novel application takes advantage of the inherent ability of laser-plasma accelerators to produce particle ...
Pretzler G, Rosenzweig JB, Koenigstein, T., Hidding, B., Karger, O., Pretzler, G., Konigstein T, Rosenzweig, J. B., Hidding B, Karger O   +9 more
core   +1 more source

Fine Calibration Method for Laser Altimeter Pointing and Ranging Based on Dense Control Points

Remote Sensing
Satellite laser altimetry technology, a novel space remote sensing technique, actively acquires high-precision elevation information about the Earth’s surface.
Chaopeng Xu, Fan Mo, Xiao Wang, Xiaomeng Yang, Junfeng Xie, Zhen Wen   +5 more
doaj   +1 more source

Dynamic Network Formation for FSO Satellite Communication

Applied Sciences, 2022
Satellite network optimization is essential, particularly since the cost of manufacturing, launching and maintaining each satellite is significant. Moreover, classical communication optimization methods, such as Minimal Spanning Tree, cannot be applied ...
Revital Marbel, Roi Yozevitch, Tal Grinshpoun, Boaz Ben-Moshe   +3 more
doaj   +1 more source

Principle demonstration of fine pointing control system for inter-satellite laser communication [PDF]

, 2015
Due to high data rates and reliability, inter-satellite laser communication has developed rapidly in these days. However, the stability of the laser beam pointing is still a key technique which needs to be solved; otherwise, the beam pointing jitter ...
Dong YH(董玉辉), Luo ZR(罗子人), Jin, G (reprint author), Chinese Acad Sci, Inst Mech, NML, Beijing 100190, Peoples R China., Liu HS(刘河山), Li YQ(李玉琼), Jin G(靳刚)   +5 more
core   +1 more source

Scientific Potential of the Geodetic Technique of Satellite Laser Ranging [PDF]

, 2023
For more than half a century, the technique of Satellite Laser Ranging (SLR), which measures the round-trip time-of-flight of ultra-short laser pulses emitted by a station to an artifical Earth orbiter, e.g., a satellite, and back to the station, is ...
Arnold, Daniel, Geisser, Linda, Meyer, Ulrich, Jäggi, Adrian   +3 more
core  

Light‐Assisted 3D Printing Techniques and Photocrosslinking Strategies: Recent Advances in Musculoskeletal Tissue Engineering

Advanced Engineering Materials, EarlyView.
In this review, the current state of light‐assisted 3D printing as it pertains to engineering musculoskeletal tissues including bone, cartilage, skeletal muscle, tendon, and ligaments is summarized. Common printing techniques, photoreactive materials, and study design choices are compiled and reviewed.
Meagan Morgan, Bin Zhang, Roger Narayan
wiley   +1 more source

Forest stand height predicted from ICESat-2 ATLAS data for forest inventory and comparison to airborne laser scanning metrics

Metsanduslikud Uurimused
The study analysed 2019–2022 summertime canopy height predictions (HICESat) given in ICESat-2 ATLAS dataset ATL08 for hemiboreal forests growing on an area of 40,000 km2 in Estonia around 25.6° E, 58.8° N. In total 12,711 ATL08 20×20 m pixel observations
Lang Mait, Tampuu Tauri, Trofimov Heido
doaj   +1 more source