Autor: Wawryn, K. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Rapid prototyping of algorithmic A/D converters based on FPAA devices
Autorzy:: Suszynski, R.
Wawryn, K.
Powiązania:: https://bibliotekanauki.pl/articles/200520.pdf
Data publikacji:: 2013
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: rapid prototyping
FPAA
A/D converter
Opis:: A rapid prototyping method for designing mixed signal systems has been presented in the paper. The method is based on implementation of the field programmable analog array (FPAA) to configure and reconfigure mixed signal systems. A serial algorithmic analog digital converter has been used as an example. Three converter architectures have been selected and implemented FPAA device. To verify and illustrate converters operation and prototyping capabilities, implemented converters have been excited by a sinusoidal signal. Analog sinusoidal excitations, digital responses and sinusoidal waveforms after reconstruction are presented.
Źródło:: Bulletin of the Polish Academy of Sciences. Technical Sciences; 2013, 61, 3; 691-696
0239-7528
Pojawia się w:: Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Rapid Prototyping of Third-Order Sigma-Delta A/D Converters
Autorzy:: Suszyński, R.
Wawryn, K.
Powiązania:: https://bibliotekanauki.pl/articles/226620.pdf
Data publikacji:: 2013
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: sigma-delta converter
A/D converter
FPAA
MASH structure
Opis:: Prototyping ot third-order sigma-delta analog to dogital converters (ΣΔ ADCs) has been presented in the paper. The method is based on implementation of field programmable analog arrays (FPAA) to configure and reconfigure proposed circuits. Three third-order ΣΔ ADC structures have been considered. The circuit characteristics have been measured and then the structure of the converters have been reconfigured tro satisfy input specifications.
Źródło:: International Journal of Electronics and Telecommunications; 2013, 59, 1; 99-104
2300-1933
Pojawia się w:: International Journal of Electronics and Telecommunications
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: Low power 9-bit pipelined A/D and 8-bit self-calibrated D/A converters for a DSP system
Autorzy:: Wawryn, K.
Suszynski, R.
Powiązania:: https://bibliotekanauki.pl/articles/199995.pdf
Data publikacji:: 2013
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: current mode circuits
pipelined a/d converter
self-calibrating d/a converter
Opis:: A low power, low voltage current mode 9 bit pipelined a/d converter and 8 bit self-calibrated d/a converter to interface a DSP system are presented in the paper. The a/d converter is built of 1.5 bit stages with digital error correction logic. The d/a converter is composed of 3 LSBs fine and 5 MSBs coarse current mode converters. The a/d and d/a converters were designed in 0.35 μm technology, then fabricated to verify the proposed concept. The performances of both converters are compared to the performances of known converter structures. The main advantages of the proposed converters are low power consumption and small chip area.
Źródło:: Bulletin of the Polish Academy of Sciences. Technical Sciences; 2013, 61, 4; 979-988
0239-7528
Pojawia się w:: Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 4.

Tytuł:: Stars’ Centroid Determination Using PSF-Fitting Method
Autorzy:: Suszyński, R.
Wawryn, K.
Powiązania:: https://bibliotekanauki.pl/articles/220813.pdf
Data publikacji:: 2015
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: centroid estimation
PSF-fitting
image processing
Opis:: This paper presents an algorithm for restoring telescope images corrupted by turbulence effects and readout noise of a telescope system in order to determine centroid positions of stars, especially the position of a reference star. A computation method employing an accurate centroid estimation algorithm reconstructing a point spread function (PSF) from the recorded astronomical images has been used. Minimisation of turbulence effects and telescope control system noise in long exposure images acquired and recorded by the ground telescope is proposed. As a solution of the distortion error a minimisation signal is dedicated to GoTo calibration procedures built in control mechanisms of the electromechanical telescope system. The proposed method has been verified in the Matlab environment for real deep sky images recorded by the ground telescope system.
Źródło:: Metrology and Measurement Systems; 2015, 22, 4; 547-558
0860-8229
Pojawia się w:: Metrology and Measurement Systems
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 5.

Tytuł:: An efficient algorithm for determining positions of astronomical objects in the Deep Sky Object pictures
Autorzy:: Suszynski, R.
Wawryn, K.
Dziębowski, M.
Powiązania:: https://bibliotekanauki.pl/articles/201895.pdf
Data publikacji:: 2015
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: effect of atmospheric turbulence
filtering of Deep Sky Object images
Gaussian noise
efekt turbulencji atmosferycznej
obiekt głębokiego nieba
obiekt astronomiczny
Opis:: The article presents an algorithm for digital image processing of astronomical objects in order to effectively determine the position of these objects. The proposed method has been optimized due to its effectiveness of removing noise and distortion caused by atmospheric turbulence and imperfections in long exposure photography of astronomical objects. This solution is ready for implementation in a system for automatic identification of stars in the recorded images. Such a system is designed for GoTo circuits at telescope’s drives, which can automatically point a telescope to astronomical objects. The method was verified by simulation in MATLAB program on real images of astronomical objects.
Źródło:: Bulletin of the Polish Academy of Sciences. Technical Sciences; 2015, 63, 3; 679-684
0239-7528
Pojawia się w:: Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:: Biblioteka Nauki

Artykuł

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