Zobrazeno 1 - 10
of 166
pro vyhledávání: '"J. Oksman"'
Autor:
J. Oksman
Publikováno v:
History of Geo- and Space Sciences, Vol 2, Iss 2, Pp 123-128 (2011)
The idea of a Nordic incoherent scatter facility, proposed by Bengt Hultqvist, was for the first time discussed among representatives of the three Nordic countries Norway, Sweden and Finland in 1969 in Oulu, Finland. In the years to follow, when othe
Externí odkaz:
https://doaj.org/article/06f965f2d60a4074b063c1d17e193656
Publikováno v:
Analog Integrated Circuits and Signal Processing
Analog Integrated Circuits and Signal Processing, Springer Verlag, 2009, 61 (1), pp.75-85. ⟨10.1007/s10470-008-9274-6⟩
Analog Integrated Circuits and Signal Processing, Springer Verlag, 2009, 61 (1), pp.75-85. ⟨10.1007/s10470-008-9274-6⟩
Parallelism can be used to increase the bandwidths of ADC converters based on sigma---delta modulators. Each modulator converts a part of the input signal band and is followed by a digital filter. Unfortunately, solutions using bandpass sigma---delta
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b5da148bf6adbd42d22fccbf3e5e5de7
https://doi.org/10.1007/s10470-008-9274-6
https://doi.org/10.1007/s10470-008-9274-6
Publikováno v:
IEEE Journal of Selected Topics in Signal Processing
IEEE Journal of Selected Topics in Signal Processing, IEEE, 2008, Vol. 2 ((2)), pp. 191-201. ⟨10.1109/JSTSP.2008.922469⟩
IEEE Journal of Selected Topics in Signal Processing, IEEE, 2008, Vol. 2 ((2)), pp. 191-201. ⟨10.1109/JSTSP.2008.922469⟩
International audience; Abstract—Hybrid Filter Bank (HFB) A/D converters (ADC) are a candidate to realize the wide-band ADC for future telecommunication systems. The classical HFB-based ADCs are simulated in both time and frequency domains using si
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5a367a036858007275ab0093a68340ec
https://doi.org/10.1109/jstsp.2008.922469
https://doi.org/10.1109/jstsp.2008.922469
Publikováno v:
IEEE Transactions on Instrumentation and Measurement. 49:890-895
Knock on spark ignition engines goes against car manufacturers efforts to reduce fuel consumption as well as exhaust gas emissions. This paper develops a signal processing method to quantify knock. After discussing some classical techniques of knock
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b54159ed6bb4a27d8544d355f087c047
https://doi.org/10.1109/19.863944
https://doi.org/10.1109/19.863944
Publikováno v:
Research in Nondestructive Evaluation. 11:39-57
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b39b0dc9bf69159313c8b63d692c7e28
https://doi.org/10.1080/09349849908968148
https://doi.org/10.1080/09349849908968148
Autor:
L Le Brusquet, J Oksman
Publikováno v:
Measurement Science and Technology. 10:559-563
An inverse-problem approach is proposed in order to improve the accuracy of tracer flow measurements. Such an approach is useful when geometrical pipe configurations are drastic (e.g. for pipes with singularities such as bends). In this approach, the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d6a6cf839352b7fbf772e457ad74aad2
https://doi.org/10.1088/0957-0233/10/6/323
https://doi.org/10.1088/0957-0233/10/6/323
Publikováno v:
Le Journal de Physique IV. :Pr9-175
This paper presents a method of measurement of the angular position of a traveling wave type ultrasonic motor (TWUM). This method uses the mechanical vibrations on the rotor to estimate its position. The working principle and the mathematical modelin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f36261f4841c7f837a2920e1ae70ba5b
https://doi.org/10.1051/jp4:1998931
https://doi.org/10.1051/jp4:1998931
Publikováno v:
IEEE Transactions on Instrumentation and Measurement. 47:920-924
This paper deals with the problem of nonlinear reconstruction of a measurand or the so-called nonlinear inverse problem. Some criteria leading to the choice of the parametric models to be used in inverse problems are presented. It is demonstrated tha
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d9f8adeb8a71c2fc24db7f9b3eaf15bb
https://doi.org/10.1109/19.744643
https://doi.org/10.1109/19.744643
Publikováno v:
IEEE Transactions on Signal Processing. 45:1574-1583
This paper presents a new recursive algorithm for the time domain reconstruction and spectral estimation of uniformly sampled signals with missing observations. An autoregressive (AR) modeling approach is adopted. The AR parameters are estimated by o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8b89767bf97827d0496f087506aa907f
https://doi.org/10.1109/78.599999
https://doi.org/10.1109/78.599999
Autor:
N. Kordjani, J. Oksman
Publikováno v:
Sensors and Actuators A: Physical. 47:537-541
The degree of trust it is possible to have in a given measurement is a key point in a number of applications. In this paper some means of defining the 'credibility' of a time-varying signal are presented. Methods for getting such credibility informat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::df4145112f10d0ebe979dd784f24019c
https://doi.org/10.1016/0924-4247(94)00958-k
https://doi.org/10.1016/0924-4247(94)00958-k