Results 11 to 20 of about 2,440,582 (249)

Novel folded-PCA for improved feature extraction and data reduction with hyperspectral imaging and SAR in remote sensing [PDF]

, 2014
As a widely used approach for feature extraction and data reduction, Principal Components Analysis (PCA) suffers from high computational cost, large memory requirement and low efficacy in dealing with large dimensional datasets such as Hyperspectral ...
Han, Junwei, Zabalza, Jaime, Yang, Mingqiang, Zhang, Yi, Ren, Jinchang, Marshall, Stephen, Wang, Jun   +6 more
core   +4 more sources

Vertical Profiling of Fresh Biomass Burning Aerosol Optical Properties over the Greek Urban City of Ioannina, during the PANACEA Winter Campaign

Atmosphere, 2022
Vertical profiling of aerosol particles was performed during the PANhellenic infrastructure for Atmospheric Composition and climatE chAnge (PANACEA) winter campaign (10 January 2020–7 February 2020) over the city of Ioannina, Greece (39.65° N, 20.85° E ...
Christina-Anna Papanikolaou, Alexandros Papayannis, Maria Mylonaki, Romanos Foskinis, Panagiotis Kokkalis, Eleni Liakakou, Iasonas Stavroulas, Ourania Soupiona, Nikolaos Hatzianastassiou, Maria Gavrouzou, Eleni Kralli, Dimitra Anagnou   +11 more
doaj   +1 more source

Radiative Effect and Mixing Processes of a Long-Lasting Dust Event over Athens, Greece, during the COVID-19 Period

Atmosphere, 2021
We report on a long-lasting (10 days) Saharan dust event affecting large sections of South-Eastern Europe by using a synergy of lidar, satellite, in-situ observations and model simulations over Athens, Greece.
Panagiotis Kokkalis, Ourania Soupiona, Christina-Anna Papanikolaou, Romanos Foskinis, Maria Mylonaki, Stavros Solomos, Stergios Vratolis, Vasiliki Vasilatou, Eleni Kralli, Dimitra Anagnou, Alexandros Papayannis   +10 more
doaj   +1 more source

Estimation of 3D vegetation structure from waveform and discrete return airborne laser scanning data [PDF]

, 2012
This study presents and compares new methods to describe the 3D canopy structure with Airborne Laser Scanning (ALS) waveform data as well as ALS point data.
Olofsson, Kenneth,, Lindberg, Eva,, Sveriges lantbruksuniversitet., Olsson, Håkan,, Kenneth Olofsson, Holmgren, Johan,, Håkan Olsson, Johan Holmgren, Olofsson, Kenneth, Lindberg, Eva, Holmgren, Johan, Eva Lindberg, Olsson, Håkan   +12 more
core   +1 more source

Sampling of STE events over Payerne, Switzerland in Spring 2023, by Raman lidar and ozonesondes [PDF]

EPJ Web of Conferences
We present two case studies of long-range transport of stratospheric ozone in the troposphere and of tropospheric ozone photochemically produced by forest fires in Germany, Canada and USA, over the Aerological station of MeteoSuisse, at Payerne ...
Kralli Eleni, Papayannis Alexandros, Gidarakou Marilena, Martucci Giovanni, Stübi Rene   +4 more
doaj   +1 more source

RADIOMETRIC CALIBRATION OF MULTI-WAVELENGTH AIRBORNE LASER SCANNING DATA [PDF]

ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2012
Airborne laser scanning (ALS) is a widely used technique for the sampling of the earth's surface. Nowadays a wide range of ALS sensor systems with different technical specifications can be found.
C. Briese, M. Pfennigbauer, H. Lehner, A. Ullrich, W. Wagner, N. Pfeifer   +5 more
doaj   +1 more source

Interest point detection from multi‐beam light detection and ranging point cloud using unsupervised convolutional neural network

IET Image Processing, 2021
Interest point detection plays an important role in many computer vision applications. This work is motivated by the light detection and ranging odometry task in autonomous driving.
Deyu Yin, Qian Zhang, Jingbin Liu, Xinlian Liang, Yunsheng Wang, Shoubin Chen, Jyri Maanpää, Juha Hyyppä, Ruizhi Chen   +8 more
doaj   +1 more source

Optical Properties of Canadian Biomass Burning Particles Over Europe Observed with Calipso and Ground-Based Lidar Systems [PDF]

EPJ Web of Conferences, 2020
A long-lasting biomass burning event affected Europe from 27 August to 3 September 2018. The biomass burning aerosol layers were observed with ground- and space-based lidars in heights ranged between 2-7 km (a.s.l.).
Papanikolaou Christina-Anna, Giannakaki Elina, Papayannis Alex, Tombrou Maria, Mylonaki Maria, Soupiona Ourania   +5 more
doaj   +1 more source

Study on the Early Cretaceous fluvial-desert sedimentary paleogeography in the Northwest of Ordos Basin

Open Geosciences, 2023
Early Cretaceous desert sedimentary system was developed in Northwest Ordos Basin. At present, the research degree of desert sedimentary paleogeography is low.
Feng Yangwei, Ren Yan, Xia Fei, Jiang Ting, Lu Fengxian, Guo Jiazeng   +5 more
doaj   +1 more source

The evaluation of ground based remote sensing systems for canopy nitrogen management in winter wheat [PDF]

, 2007
Nitrogen management is a crucial issue in terms of environmental and economical efficiency for winter wheat husbandry. Precision Agriculture in particular Remote Sensing, has been used to determine the variability of the crop.
Havránková, Jana
core   +7 more sources