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Tytuł:
Satellite Image Fusion Using a Hybrid Traditional and Deep Learning Method
Autorzy:
Hammad, Mahmoud M.
Mahmoud, Tarek A.
Amein, Ahmed Saleh
Ghoniemy, Tarek S.
Powiązania:
https://bibliotekanauki.pl/articles/27314300.pdf
Data publikacji:
2023
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
deep learning image fusion
remote sensing image fusion
remote sensing optical image
pan-sharpening
remote sensing image
Opis:
Due to growing demand for ground-truth in deep learning-based remote sensing satellite image fusion, numerous approaches have been presented. Of these approaches, Wald’s protocol is the most commonly used. In this paper, a new workflow is proposed consisting of two main parts. The first part targets obtaining the ground-truth images using the results of a pre-designed and well-tested hybrid traditional fusion method. This method combines the Gram–Schmidt and curvelet transform techniques to generate accurate and reliable fusion results. The second part focuses on the training of a proposed deep learning model using rich and informative data provided by the first stage to improve the fusion performance. The demonstrated deep learning model relies on a series of residual dense blocks to enhance network depth and facilitate the effective feature learning process. These blocks are designed to capture both low-level and high-level information, enabling the model to extract intricate details and meaningful features from the input data. The performance evaluation of the proposed model is carried out using seven metrics such as peak-signal-to-noise-ratio and quality without reference. The experimental results demonstrate that the proposed approach outperforms state-of-the-art methods in terms of image quality. It also exhibits the robustness and powerful nature of the proposed approach which has the potential to be applied to many remote sensing applications in agriculture, environmental monitoring, and change detection.
Źródło:
Geomatics and Environmental Engineering; 2023, 17, 5; 145--162
1898-1135
Pojawia się w:
Geomatics and Environmental Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Spectra for the product of Gaussian noises
Autorzy:
Kish, L. B.
Mingesz, R.
Gingl, Z.
Granqvist, C.-G.
Powiązania:
https://bibliotekanauki.pl/articles/221180.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
fluctuation-enhanced sensing
correlation detectors
indoor and environmental air quality sensing
Opis:
Products of Gaussian noises often emerge as the result of non-linear detection techniques or as parasitic effects, and their proper handling is important in many practical applications, including fluctuation-enhanced sensing, indoor air or environmental quality monitoring, etc. We use Rice's random phase oscillator formalism to calculate the power density spectra variance for the product of two Gaussian band-limited white noises with zero-mean and the same bandwidth W. The ensuing noise spectrum is found to decrease linearly from zero frequency to 2W, and it is zero for frequencies greater than 2W. Analogous calculations performed for the square of a single Gaussian noise confirm earlier results. The spectrum at non-zero frequencies, and the variance of the square of a noise, is amplified by a factor two as a consequence of correlation effects between frequency products. Our analytic results are corroborated by computer simulations.
Źródło:
Metrology and Measurement Systems; 2012, 19, 4; 653-658
0860-8229
Pojawia się w:
Metrology and Measurement Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Cooperative Spectrum Sensing in Cognitive Radio Networks: A Survey on Machine Learning-based Methods
Autorzy:
Khamayseh, Sundous
Halawani, Alaa
Powiązania:
https://bibliotekanauki.pl/articles/308079.pdf
Data publikacji:
2020
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
cognitive radio
cooperative spectrum sensing
IEEE 802.22
machine learning
spectrum sensing
Opis:
The continuous growth of demand experienced by wireless networks creates a spectrum availability challenge. Cognitive radio (CR) is a promising solution capable of overcoming spectrum scarcity. It is an intelligent radio technology that may be programmed and dynamically configured to avoid interference and congestion in cognitive radio networks (CRN). Spectrum sensing (SS) is a cognitive radio life cycle task aiming to detect spectrum holes. A number of innovative approaches are devised to monitor the spectrum and to determine when these holes are present. The purpose of this survey is to investigate some of these schemes which are constructed based on machine learning concepts and principles. In addition, this review aims to present a general classification of these machine learningbased schemes.
Źródło:
Journal of Telecommunications and Information Technology; 2020, 3; 36-46
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Geoinformatics - an integrated spatial research tool
Autorzy:
Olędzki, Jan Romuald
Kwiatkowska, Joanna M.
Powiązania:
https://bibliotekanauki.pl/articles/2029427.pdf
Data publikacji:
2004-06-01
Wydawca:
Uniwersytet Warszawski. Wydział Geografii i Studiów Regionalnych
Tematy:
geoinformatics
remote sensing
geography
Opis:
The structure of geoinformatics can be understood in many ways, what can be seen from the more or the less complex schemas published in various articles. Geoinformatics creates new possibilities for the precise analysis of spatial phenomena, such as for following their dynamics or defining the associations existing between their components. The use of remote sensing data in such research, takes to another level those areas of knowledge, in which there nevertheless still is a scarcity of reliable materials. It also enables the current monitoring of those phenomena which can't be investigated and estimated in any other way, as well as the modeling of spatial (geographical) phenomena. Since 1996, many studies have been performed at the Laboratory of Remote Sensing of the Environment at the University of Warsaw, in which remote sensing data were integrated with data obtained by other means.
Źródło:
Miscellanea Geographica. Regional Studies on Development; 2004, 11; 323-331
0867-6046
2084-6118
Pojawia się w:
Miscellanea Geographica. Regional Studies on Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Charakterystyka zjawiska quorum sensing i jego znaczenie w aspekcie formowania i funkcjonowania biofilmu w inżynierii środowiska, budownictwie, medycynie oraz gospodarstwie domowym
Characteristics of the phenomenon of quorum sensing and its meaning in terms of formation and functioning of biofilm in environmental engineering, civil engineering, medicine and household
Autorzy:
Matejczyk, M.
Suchowierska, M.
Powiązania:
https://bibliotekanauki.pl/articles/402639.pdf
Data publikacji:
2011
Wydawca:
Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:
quorum sensing
biofilm
korozja biologiczna
Opis:
Na podstawie przeglądu literatury dokonano charakterystyki zjawiska quorum sensing, które w znaczeniu dosłownym oznacza poczucie obecności i odgrywa znaczącą rolę w procesie formowania i funkcjonowania biofilmu. Zjawisko to jest specyficznym systemem komunikacji pomiędzy drobnoustrojami z udziałem związków chemicznych, ściśle kontrolowanym przez określone geny w odpowiedzi na liczebność populacji drobnoustrojów. Biofilm odpowiada często za uszkodzenia urządzeń sanitarnych, gospodarstwa domowego, materiałów budowlanych. Poznanie mechanizmów tworzenia i funkcjonowania biofilmu pozwoli na opracowanie skuteczniejszych technologii walki ze skutkami jego szkodliwego oddziaływania w inżynierii środowiska, budownictwie jak również w codziennym życiu człowieka.
In the paper characteristics of phenomenon of quorum sensing on base of current literature was done. Quorum sensing means sense of presence in literal meaning and it plays significant role in process of formation and functioning of biofilm. Quorum sensing is a special kind of communication system between microorganism with participation of chemicals. It is controlled by definite genes in answer on numerical force of population of microorganisms. Biofilm functioning is strictly connected with damages of sanitary equipment, housekeeping, construction materials. Knowledge of mechanism of biofilm creation will allow for elaboration of forceful technology of battle with its result of harmful interaction in environmental engineering, construction as well as in daily life of person.
Źródło:
Budownictwo i Inżynieria Środowiska; 2011, 2, 1; 71-75
2081-3279
Pojawia się w:
Budownictwo i Inżynieria Środowiska
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effects of ship motion on acoustic remote sensing
Autorzy:
Tegowski, J.
Zielinski, A.
Powiązania:
https://bibliotekanauki.pl/articles/332057.pdf
Data publikacji:
2003
Wydawca:
Polskie Towarzystwo Akustyczne
Tematy:
ship motion
acoustic remote sensing
Opis:
Ship motion affects quality of acoustic data collected by various acoustic remote sensing systems used for bottom and fisheries surveying. The angular position of an acoustic beam changes in time from its nominal position vertical to sea surface. This motion affects the acoustic returns from the bottom and other targets by changing their intensity and arrival times. In this paper we illustrate these effects on bottom returns obtained using single beam sonar.
Źródło:
Hydroacoustics; 2003, 6; 205-214
1642-1817
Pojawia się w:
Hydroacoustics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Advanced technologies in aerial mapping
PAŽANGIOSIOS AEROKARTOGRAFAVIMO TECHNOLOGIJOS
Autorzy:
Ruzgienė, Birutė
Kuklienė, Lina
Kuklys, Indrius
Jankauskienė, Dainora
Powiązania:
https://bibliotekanauki.pl/chapters/2196850.pdf
Data publikacji:
2022
Wydawca:
Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:
aerial mapping
remote sensing
photogrammetry
Opis:
Aerial mapping is one of the most advanced methods to obtain information about the surface of the Earth and other objects using remote sensing technology. The quality of cartographic products and 3D models mainly depends on the success of aerial photography/ scanning mission, qualified guidance of photogrammetric workflow, appropriate realization of aerial mapping requirements.
Źródło:
Future of the city; 227-251
9788367185271
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Dual Port Antenna Combining Sensing and Communication Tasks for Cognitive Radio
Autorzy:
Nachouane, H.
Najid, A.
Tribak, A.
Riouch, F.
Powiązania:
https://bibliotekanauki.pl/articles/226370.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
cognitive radio
microstrip antenna
UWB
coplanar waveguide
sensing and communication tasks
sensing antenna
Opis:
Dynamic spectrum access has been proposed as the effective solution to overcome the spectrum scarcity issue, supported by cognitive radio technology. Sensing and communication functions are both the most important tasks in cognitive radio systems. In this paper, an antenna system combining sensing and communication tasks is proposed to be integrated into cognitive radio front-ends. The sensing task is performed by means of an ultra-wideband quasi-omnidirectional antenna. Whilst the communication task is ensured by using a narrowband antenna. Both antennas have been designed on the same layer of an FR4 substrate, for manufacturing cost constraint. Therefore, the isolation between them must take into consideration. The measured mutual coupling of less than -18 dB is achieved over the whole impedance bandwidth. The proposed sensing antenna covers a wide range frequency bands ranging from 2 to 5.5 GHz. While the communication antenna operates at 2.8 GHz, and by adding inductors to the antenna, the resonant frequency can be tuned from 2.6 to 2.7 GHz. The whole antenna system was designed, fabricated, and tested. Measurement and simulation results prove the feasibility of the proposed structure for cognitive radio applications.
Źródło:
International Journal of Electronics and Telecommunications; 2016, 62, 2; 121-127
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Utilisation of IoT and sensing for machine tools
Autorzy:
Fujishima, Makoto
Mori, Masahiko
Narimatsu, Koichiro
Irino, Naruhiro
Powiązania:
https://bibliotekanauki.pl/articles/99978.pdf
Data publikacji:
2019
Wydawca:
Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:
sensing
IoT
machine tools
automation
Opis:
Strong requirements for automation in the production processes using machine tools have been increasing due to lack of high-skilled machining engineers. Automation used to be utilised in mass production, but it is also necessary in medium- to low-volume production recently. Next requirements will be monitoring or sensing functions to make the following possible: prompt service when the machine stops; detection of abnormality before the machine breaks down; and compensation of thermal displacement to ensure machining accuracy. These now need to be performed automatically in place of operators so that abnormality can be detected during machining operation. In this paper core technologies to support automation system will be discussed which are operation monitoring, predictive maintenance, sensing interface and thermal displacement compensation as a sensing application.
Źródło:
Journal of Machine Engineering; 2019, 19, 1; 38-47
1895-7595
2391-8071
Pojawia się w:
Journal of Machine Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of remote sensing methods in geological mapping
Autorzy:
Graniczny, M.
Powiązania:
https://bibliotekanauki.pl/articles/2065882.pdf
Data publikacji:
2005
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
geological mapping
photogeology
remote sensing
Opis:
Aerial photographs are a source of geological information that may be unobtainable elsewhere. If the fullest use is to be made of this information for the purpose of geological mapping, there must be a planned integration of the photogeological work with the field and laboratory investigations. The appearance of the first satellites for civil purposes on the beginning of the 1970s (such as ERTS – Landsat series), of most land areas of the Earth has provided new opportunity for photogeologists. Many areas can now be studied and mapped geologically for which neither adequate maps nor vertical aerial photograps were available. The advantages of the present satellite systems and examples of their application by specialists of the Polish Geological Institute are presented in this paper. Nowadays, it is practically impossible to imagine performing geological mapping without application of remote sensing data and analysis. Development of new technologies is very fast and new borne techniques are coming like permanent scatter interferometry, laser scanning etc. However, we should always remember, that they are only very useful tools to help geologists in their field mapping art and practise.
Źródło:
Przegląd Geologiczny; 2005, 53, 10/2; 907-912
0033-2151
Pojawia się w:
Przegląd Geologiczny
Dostawca treści:
Biblioteka Nauki
Artykuł

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