Results 11 to 20 of about 877,500 (268)

Parameter Estimation of LFM Signal in Low Signal-to-Noise Ratio Using Cross-Correlation Function

Advances in Electrical and Electronic Engineering, 2021
The pulse with intra-pulse modulation plays an important role in the design of radar systems. The first class of the signals type is the linear frequency modulation technique.
Minh Van Duong, Jiri Vesely, Petr Hubacek, Premysl Janu, Phan Nhat Giang   +4 more
doaj   +1 more source

Introduction and application of transfer function model to predict the process of rainfall-groundwater level in Golestan province [PDF]

رویکردهای نوین در مهندسی آب و محیط زیست, 2023
Groundwater is one of the most valuable water resource in Iran, which is mainly influenced by rainfall patterns in a region. In the present study, 30-years rainfall and groundwater level data were used in the three watersheds of Galikesh, Ramian and ...
Youl Aman Nazeri, Nader Jandaghi, Mojtaba G. Mahmoodlu, Majid Azimmohseni   +3 more
doaj   +1 more source

A GROUP-GALAXY CROSS-CORRELATION FUNCTION ANALYSIS IN zCOSMOS [PDF]

The Astrophysical Journal, 2012
We present a group-galaxy cross-correlation analysis using a group catalog produced from the 16,500 spectra from the optical zCOSMOS galaxy survey. Our aim is to perform a consistency test in the redshift range 0.2 < z < 0.8 between the clustering strength of the groups and mass estimates that are based on the richness of the groups.
Iovino, A., Kampczyk, P., Kovac, K., Lamareille, F., Le Borgne, J-F, Le Brun, V., Maier, C., Mignoli, M., Pelló, R., Peng, Y., Perez Montero, E., Presotto, V., Silverman, J., Tanaka, M., Tasca, L., Tresse, L., Vergani, D., Zucca, E., Barnes, L., Bordoloi, R., Cappi, A., Cimatti, Alessandro, Coppa, G., Koekemoer, A. M., Lopez-Sanjuan, C., Mccracken, H. J., Moresco, M., Nair, P., Pozzetti, L., Welikala, N., Knobel, C., Lilly, S. J., Carollo, C. M., Contini, T., Kneib, J-P, Le Fevre, O., Mainieri, V., Renzini, A., Scodeggio, M., Zamorani, G., Bardelli, S., Bolzonella, M., Bongiorno, A., Caputi, K., Cucciati, O., Torre, S., Ravel, L., Franzetti, P., Garilli, B.   +48 more
openaire   +7 more sources

Modified version of the cross-correlation function to measure drought occurrence time-delay correlation

Journal of Water and Climate Change, 2023
According to the importance of assessing the presence of time delay between the occurrence of various hydrological and meteorological phenomena, the study aim is to introduce a new method (with high ability and non-sensitivity to the abnormality of ...
Mohammad Reza Mahmoudi, Abdol Rassoul Zarei   +1 more
doaj   +1 more source

A NEW METHOD FOR SIDELOBE SUPPRESSION IN THE AMBIGUITY FUNCTION OF SIGNALS MODULATED BY PSEUDO-RANDOM SEQUENCES [PDF]

Radio Physics and Radio Astronomy
Subject and Purpose. One of the main challenges in achieving high-accuracy radar target parameter determination and improving radar system noise immunity is the presence of sidelobes in the ambiguity function of the used signals, especially when these ...
K. O. Lukin, V. M. Konovalov, L. V. Yurchenko   +2 more
doaj   +1 more source

SIGNAL RELAY TIME MEASURER REFLECTED FROM A SMALL PURPOSE AT ITS LOCATION OVER THE SEA

Сучасні інформаційні системи, 2020
In the article possibility of account of phase fluctuations of signals reflected is examined from littlepitch aims location, during optimization of process of measuring of time of delay of signal.
Oksana Biesova, Vladimir Karlov, Olena Lukashuk, Valentin Petrushenko   +3 more
doaj   +1 more source

Testing for causality-in-mean and in-variance among the U.S., China, and some Africa capital markets: A CCF approach

Journal of Economics and Management, 2021
Aim/purpose – Owing to the huge risk occasioned by negative contagion effects associated with financial market linkages, markets participants and academia have continued to examine the capital market cross country interdependence at different levels.
Osabuohien-Irabor Osarumwense
doaj   +1 more source

Cross-correlation function in the interpretation of potential fields anomalies of strike-slip nature [PDF]

E3S Web of Conferences, 2023
In the study, a comparison of correlation characteristics that can be obtained when analyzing areal geophysical data in COSCAD 3D, GIS INTEGRO software, as well as in custom software with a novel approach, has been conducted.
Asoskov Artem, Matykina Darya
doaj   +1 more source

HD 199719’un Çizgi Ortay Analizi

Süleyman Demirel Üniversitesi Fen-Edebiyat Fakültesi Fen Dergisi, 2020
Bu çalışmada, TÜBİTAK Ulusal Gözlemevinde (TUG) devam etmekte olan ötegezegen araştırmasının bir parçası olarak HD 199719’un tayfsal çizgi ortaylarının (bisektör) değişimleri incelendi.
Didem Dilan İZCİ, Mesut YILMAZ
doaj   +1 more source

Gradient-Guided Object Tracking Algorithm with Channel Selection [PDF]

Jisuanji kexue yu tansuo, 2022
In object tracking task, the target object to be tracked is arbitrary, and there may be similar distractor around the target, which often leads to the target features extracted by the pre-trained network not fully applicable to the tracked target.
CHENG Shilong, XIE Linbo, PENG Li
doaj   +1 more source