Autor: Milewski, M. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Structure Optimization of Coded Polyphase Signals with the Enhanced Tolerance to the Doppler Frequency Shift
Autorzy:: Szczegielniak, D.
Milewski, A.
Szczegielniak, M.
Powiązania:: https://bibliotekanauki.pl/articles/1401917.pdf
Data publikacji:: 2015-09
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 84.40.Ua
84.40.Xb
Opis:: The aim of this research was to verify if It is possible to solve the synthesis problem of polyphase codes efficiently with an acceptable quality in the context of radar applications - with the greatest possible effectiveness of the recognition of such signals in the presence of the noise and occurrence of the Doppler effect. The received results confirmed that the implemented optimization algorithm can search polyphase sequences successfully with a low level of sidelobes and an enhanced tolerance to the Doppler effect. Applying optimization methods allows to form ambiguity function in a measure in the assumed optimization range which seems to be encouraging for future examinations in the field of the computer optimization for the coded radar signals synthesis.
Źródło:: Acta Physica Polonica A; 2015, 128, 3; 452-455
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 2.

Tytuł:: Możliwości badania cieczy za pomocą czujników z akustyczną falą powierzchniową
Autorzy:: Milewski, A.
Baszun, M.
Gawor, S.
Powiązania:: https://bibliotekanauki.pl/articles/332231.pdf
Data publikacji:: 2000
Wydawca:: Polskie Towarzystwo Akustyczne
Opis:: As it is well known surface acoustic wave (SAW) devices implementing shear horizontal (SH) waves can be used as sensor operating in liquid environment. They can be used to determine such liquid properties as: viscosity, permittivity, conductivity and mass loading on the sensor surface. The influence of number of electrodes used in the interdigital transducers, on sensor attenuation and sensitivity was considered. The utility of various piezoelectric materials as substrates for liquid sensors was also tested. Three various materials were taken into account: 36oYX LiTaO3, 41oYX LiNbO3 and 64oYX LiNbO3. Two types of sensors (wideband and narrowband) were made and examined.
Źródło:: Hydroacoustics; 2000, 3; 237-240
1642-1817
Pojawia się w:: Hydroacoustics
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 3.

Tytuł:: Modeling of SAW liquid sensors
Autorzy:: Baszun, M.
Grzęda, D.
Milewski, A.
Gawor, S.
Powiązania:: https://bibliotekanauki.pl/articles/332530.pdf
Data publikacji:: 1999
Wydawca:: Polskie Towarzystwo Akustyczne
Opis:: Surface Acoustic Wave (SAW) devices are used in variety of sensing application. This paper describes the sensors operated with shear horizontal (SH) mode wave, in liquid. Liquid sensors of conductivity and viscosity are described and results of modelling of their properties are given. Parameters of SH mode sensors design are also given.
Źródło:: Hydroacoustics; 1999, 2; 331-334
1642-1817
Pojawia się w:: Hydroacoustics
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 4.

Tytuł:: Reflective Array Compressor with etched grooves
Autorzy:: Milewski, A.
Mitrofanov, I. S.
Tupaj, M.
Gawor, S.
Powiązania:: https://bibliotekanauki.pl/articles/331830.pdf
Data publikacji:: 1997
Wydawca:: Polskie Towarzystwo Akustyczne
Opis:: Most surface wave filters use interdigital transducers on piezoelectric substates to produce chirp filters. Alternate type of filter use controlled reflection of surface waves from surface gratings. The second type (RAC - Reflective Array Compressor) are free of spurious signal and second order effects, and in large time-bandwith application are better than filter based on interdigital transduces. Designing method, technology and practical results of RAC filter with two 90 degree reflections are presented.
Źródło:: Hydroacoustics; 1997, 1; 205-208
1642-1817
Pojawia się w:: Hydroacoustics
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 5.

Tytuł:: A new type of high power ultrasonic generator for welding and cutting processes
Autorzy:: Kardyś, W.
Milewski, A.
Kogut, P.
Kluk, P.
Kiełbasiński, M.
Powiązania:: https://bibliotekanauki.pl/articles/332326.pdf
Data publikacji:: 2016
Wydawca:: Polskie Towarzystwo Akustyczne
Tematy:: ultrasonic
ultrasonic welding
ultrasonic cutting
ultrasonic generator
Opis:: The paper presents a new type of high power ultrasonic generator for welding and cutting processes developed by the Tele & Radio Research Institute. The new generator can provide up to 5 kW of electrical power to an ultrasonic transducer in the frequency range of 16 kHz up to 60 kHz with regulation step down to 0.1 Hz. The device utilizes an innovative microcontroller with built-in high resolution timing blocks that enable direct synthesis of control signals for the generator's resonant converter, without the need of an external DDS unit or programmable device. This new approach to designing ultrasonic generators can benefit in greater flexibility and reliability of the device. New algorithms with cycle-by-cycle parameter control, and precise regulation of output frequency and power delivery, have been developed. Various parameters of ultrasonic stack, such as impedance and resonant frequency, are measured by the generator in real-time, and can be used for ultrasonic stack wear monitoring and fault detection.
Źródło:: Hydroacoustics; 2016, 19; 209-218
1642-1817
Pojawia się w:: Hydroacoustics
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Informacja

Wyszukujesz frazę "Milewski, M." wg kryterium: Autor

Źródło danych

Dostawca treści

Kolekcja

Rok wydania

Wydawca

Temat

Autor

Typ dokumentu

Język