Search results for: sygnaly impulsowe

• Study of the Performance of DSSS UAC System Depending on the System Bandwidth and the Spreading Sequence

  Publication

  • I. Kochańska
  • R. Salamon
  • J. Schmidt
  • A. Schmidt

  - SENSORS - Year 2021

  A signal transmitted in an Underwater Acoustic Communication (UAC) system operating in a shallow-water channel suffers from strong time dispersion due to multipath propagation. This causes the Inter-Symbol Interference (ISI) observed in the received signal, which significantly limits the communication system’s reliability and transmission rate. In such propagation conditions, the Direct-Sequence Spread Spectrum (DSSS) method is...

  Full text available to download

• AUTOMATYCZNA KLASYFIKACJA MOWY PATOLOGICZNEJ

  Publication

  • M. Włoszczyńska
  • B. Kostek

  - Year 2023

  Aplikacja przedstawiona w niniejszym rozdziale służy do automatycznego wykrywania mowy patologicznej na podstawie bazy nagrań. W pierwszej kolejności przedstawiono założenia leżące u podstaw przeprowadzonych badan wraz z wyborem bazy mowy patologicznej. Zaprezentowano również zastosowane algorytmy oraz cechy sygnału mowy, które pozwalają odróżnić mowę niezaburzoną od mowy patologicznej. Wytrenowane sieci neuronowe zostały następnie...

  Full text to download in external service

• International Conference on Information, Communications and Signal Processing

  Conferences

• Nonlinear waves in optical waveguides and soliton theory applications

  Publication

  • S. Leble

  - Year 2003

  Równania teorii solitonów zastosowano do propagacji impulsów światła w falo-wodach dielektrycznych.Wyprowadzono i zbadano rozwiazania równań oddziaływa-nia (z uwzględnieniem tłumienia) trzech fal Maxwella-Blocha.

• Elementy elektroniczne w środowisku dużej emisji elektromagnetycznej

  Publication

  • K. Fagiewicz
  • S. Witkowski

  - Year 2003

  W referacie przedstawiono rodzaje narażeń powodowanych impulsowymi zakłóceniami elektromagnetycznymi występującymi w środowisku urządzeń energoelektronicznych. Przedstawiono poziomy energii i źródła zakłóceń które stanowią wyładowania elektrostatyczne, przebiegi łączeniowe w obwodach indukcyjnych i wyładowania atmosferyczne. Przedstawiono sposoby badania odporności na zakłócenia impulsowe. Zaprezentowano wyniki uzyskane z przeprowadzonych...

• Grzegorz Lentka dr hab. inż.

  People

  Faculty of Electronics, Telecommunications and Informatics, Department of Metrology and Optoelectronics

  Grzegorz Lentka obtained his MSc title in electronics, specialization Measurement Systems at Gdańsk University of Technology, Faculty of Electronics, Telecommunications and Informatics in 1996. He obtained the PhD title in 2003 and habilitation in 2014, respectively. Currently he is an professor in Department of Metrology and Optoelectronics. His main scientific interests are focused on digital signal processing for metrology,...

• Enhancement of self-trapped excitons and near-infrared emission in Bi3+/Er3+ co-doped Cs2Ag0.4Na0.6InCl6 double perovskite

  Open Research Data

  open access

  • T. Leśniewski
  • A. Lazarowska
  • M. Grzegorczyk
  • S. Mahlik

  Erbium (Er) complexes are used as optical gain materials for signal generation in the telecom C-band at 1540 nm, but they need a sensitizer to enhance absorption. Na+ substitution for Ag+ and Bi3+ doping at the In3+ site is a possible strategy to enhance the broadband emission of Cs2AgInCl6, which could be used as a sensitizer for energy transfer to...

• Time-of-flight fiber optic sensors for strain and temperature measurement

  Publication

  • J. Pluciński
  • P. Wierzba
  • B. Kosmowski

  - Year 2005

  W pracy przedstawiono światłowodowy sensor czasu przelotu do pomiaru odkształceń i temperatury mogący pracować zarówno w modzie transmisyjnym, jak i odbiciowym. W pomiarach czasu przelotu wykorzystano krótkie impulsy światłowodowe wprowadzane do jednodomowego światłowodu. Pod wpływem czynników zewnętrznych (temperatura, odkształcenie, siła rozciągająca) zmieniała się droga optyczna w światłowodzie, co powodowało zmiany czasu przelotu...

• Zastosowanie zespolonej pulsacji chwilowej w analizie układów mikrofalowych metodą różnic skończonych w dziedzinie czasu

  Publication

  • M. Wiktor
  • K. Świder

  - Przegląd Telekomunikacyjny + Wiadomości Telekomunikacyjne - Year 2009

  W artykule przedstawiono alternatywną metodę wyznaczania częstotliwości rezonansowych rezonatorów mikrofalowych na podstawie analizy ciągu próbek odpowiedzi impulsowej otrzymanego w symulacji w dziedzinie czasu (FDTD). Zastosowana metoda, bazująca na zespolonej pulsacji chwilowej (ICF), pozwala na szybką identyfikację dwóch bliskich częstotliwości w przebiegu czasowym, co pozwala skrócić analizę układów o dużej dobroci i rezonatorów...

• Efektywny algorytm modelowania kanału radiokomunikacyjnego

  Publication

  • A. Jaszcza
  • D. Rutkowski

  - Year 2005

  W referacie omówiono efektywny algorytm modelowania kanału radiokomunikacyjnego z zanikami i propagacją wielodrogową. Zaproponowano szybką metodę ważonego próbkowania prążkowej odpowiedzi impulsowej kanału radiokomunikacyjnego. Przedstawiono algorytm generacji sekwencji współczynników rayleighowskich o pożądanym rozkładzie gęstości mocy z wykorzystaniem transformacji FFT. Na podstawie porównania ze stosowanym dotychczas modelem...

• Development of the sound field 3D intensity probe based on miniature microphones

  Publication

  • J. Kotus
  • W. Moskwa
  • A. Czyżewski
  • B. Kostek

  - Year 2015

  The engineered measuring probe uses three pairs of miniature microphones coupled. The signals from the microphones after an initial amplification are fed to differential circuits. Due to the required symmetry of the circuit it was necessary to select electronic components very carefully. Moreover, additional digital signal processing techniques were applied to avoid amplitude and phase mismatch. The view of the engineered probe...

• Ocena jakości elementów elektronicznych na podstawie szumów 1/f.

  Publication

  • A. Konczakowska

  - Elektronizacja: podzespoły i zastosowania elektroniki - Year 2002

  We wszystkich elementach występują samoistne źródła szumów, a przebiegi szumowe są zazwyczaj traktowane jako sygnały niepożądane. Szum elementów elektronicznych może być jednak traktowany jako sygnał związany z jakością badanego elementu. Przedstawiono szumy własne elementów elektronicznych jako dwie składowe: szumy naturalne i szumy nadmiarowe. Omówiono powiązania tych składowych z jakością elementów. Przytoczono parametry...

• System wykrywania i przeciwdziałania spoofingowi GPS

  Publication

  • J. Magiera
  • R. Katulski

  - Year 2016

  Spoofing w systemach nawigacji satelitarnej jest atakiem elektronicznym, który polega na nieuprawnionej emisji sygnałów stanowiących imitacje rzeczywistych sygnałów odbieranych z satelitów. Powoduje on wyznaczenie nieprawidłowych informacji o czasie, położeniu i prędkości odbiornika. Z uwagi na trudność jego wykrycia, spoofing stanowi poważniejsze zagrożenie niż proste zagłuszanie sygnałów zakłóceniem o dużej mocy (ang. jamming)....

• REVERSE MODELLING OF MICROSEISMIC WAVES PROPAGATION FOR THE INTERPRETATION OF THE DATA FROM HYDRAULIC FRACTURING MONITORING IN POLAND

  Publication

  • M. Antoszkiewicz
  • M. Kmieć
  • M. Szkodo
  • R. Jankowski

  - Year 2017

  A hydraulic fracturing job was performed to stimulate gas flow from a horizontal wellbore located in Poland. The whole operation was overseen by means of microseismic monitoring. For this purpose, an array of 12000 geophones was deployed on ground in form of patches distributed unevenly in a region of 4km from the wellbore. The array was constantly recording seismic signals during whole fracturing processed. Such recorded signals...

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• Sposób i układ do modyfikacji widma sygnału ultraszerokopasmowego radia impulsowego

  Inventions

  • Faculty of Electronics, Telecommunications and Informatics

• Sposób i układ do modyfikacji widma sygnału ultraszerokopasmowego radia impulsowego

  Inventions

  • Faculty of Electronics, Telecommunications and Informatics

• Matematyczne zagadnienia analizy sygnału

  e-Learning Courses

  • R. Krawczyk

• Matematyczne zagadnienia analizy sygnału

  e-Learning Courses

  • J. Signerska-Rynkowska
  • A. Bartłomiejczyk
  • B. Mielewska

  Matematyczne zagadnienia analizy sygnału Prowadzący (odpowiedzialny za przedmiot): Justyna Signerska-Rynkowska Kierunek: Matematyka, Specjalność - Matematyka stosowana (WFTiMS), I stopnia - licencjackie, stacjonarne

• The radiated immunity test of an astable multivibrator at over-normative field strengths

  Open Research Data

  open access

  • P. Ławniczak
  • B. Pałczyńska

  - series: Radiated immunity measurements of electronic devices in a GTEM cell

  The dataset presents a result of measurements that are a part of electromagnetic field immunity tests. The radiated, radio frequency, immunity tests were carried out for a typical astable electronic multivibrator. Tests of immunity of electronic systems to radiated radio frequency (RF) disturbances in the frequency range from 80 MHz to 1 GHz were performed...

• Invasive electrophysiological patient recordings from the human brain during memory tasks with pupilometry (MC_004)

  Open Research Data

  open access

  • M. Kucewicz
  • J. Cimbalnik
  • C. Topcu
  • M. Lech
  • V. Marks
  • B. Joseph
  • A. Czyżewski
  • G. Worrell

  Data comprise intracranial EEG (iEEG) brain activity, including electrocorticography (ECoG) signals, recorded from over 100 electrodes implanted in one patient throughout various brain regions. These iEEG signals were recorded in epilepsy patients undergoing invasive monitoring and localization of seizures when they were performing a battery of four...

• Invasive electrophysiological patient recordings from the human brain during memory tasks with pupilometry (MC_005)

  Open Research Data

  open access

  • M. Kucewicz
  • J. Cimbalnik
  • C. Topcu
  • M. Lech
  • V. Marks
  • B. Joseph
  • A. Czyżewski
  • G. Worrell

  Data comprise intracranial EEG (iEEG) brain activity, including electrocorticography (ECoG) signals, recorded from over 100 electrodes implanted in one patient throughout various brain regions. These iEEG signals were recorded in epilepsy patients undergoing invasive monitoring and localization of seizures when they were performing a battery of four...

• Invasive electrophysiological patient recordings from the human brain during memory tasks with pupilometry (MC_002)

  Open Research Data

  open access

  • M. Kucewicz
  • J. Cimbalnik
  • C. Topcu
  • M. Lech
  • V. Marks
  • B. Joseph
  • A. Czyżewski
  • G. Worrell

  Data comprise intracranial EEG (iEEG) brain activity, including electrocorticography (ECoG) signals, recorded from over 100 electrodes implanted in one patient throughout various brain regions. These iEEG signals were recorded in epilepsy patients undergoing invasive monitoring and localization of seizures when they were performing a battery of four...

• Invasive electrophysiological patient recordings from the human brain during memory tasks with pupilometry (MC_003)

  Open Research Data

  open access

  • M. Kucewicz
  • J. Cimbalnik
  • C. Topcu
  • M. Lech
  • V. Marks
  • B. Joseph
  • A. Czyżewski
  • G. Worrell

  Data comprise intracranial EEG (iEEG) brain activity, including electrocorticography (ECoG) signals, recorded from over 100 electrodes implanted in one patient throughout various brain regions. These iEEG signals were recorded in epilepsy patients undergoing invasive monitoring and localization of seizures when they were performing a battery of four...

• Invasive electrophysiological patient recordings from the human brain during memory tasks with pupilometry (MC_0010)

  Open Research Data

  open access

  • M. Kucewicz
  • J. Cimbalnik
  • C. Topcu
  • M. Lech
  • V. Marks
  • B. Joseph
  • A. Czyżewski
  • G. Worrell

  Data comprise intracranial EEG (iEEG) brain activity, including electrocorticography (ECoG) signals, recorded from over 100 electrodes implanted in one patient throughout various brain regions. These iEEG signals were recorded in epilepsy patients undergoing invasive monitoring and localization of seizures when they were performing a battery of four...

• Invasive electrophysiological patient recordings from the human brain during memory tasks with pupilometry (MC_0012)

  Open Research Data

  open access

  • M. Kucewicz
  • J. Cimbalnik
  • C. Topcu
  • M. Lech
  • V. Marks
  • B. Joseph
  • A. Czyżewski
  • G. Worrell

  Data comprise intracranial EEG (iEEG) brain activity, including electrocorticography (ECoG) signals, recorded from over 100 electrodes implanted in one patient throughout various brain regions. These iEEG signals were recorded in epilepsy patients undergoing invasive monitoring and localization of seizures when they were performing a battery of four...

• Invasive electrophysiological patient recordings from the human brain during memory tasks with pupilometry (MC_008)

  Open Research Data

  open access

  • M. Kucewicz
  • J. Cimbalnik
  • C. Topcu
  • M. Lech
  • V. Marks
  • B. Joseph
  • A. Czyżewski
  • G. Worrell

  Data comprise intracranial EEG (iEEG) brain activity, including electrocorticography (ECoG) signals, recorded from over 100 electrodes implanted in one patient throughout various brain regions. These iEEG signals were recorded in epilepsy patients undergoing invasive monitoring and localization of seizures when they were performing a battery of four...

• Invasive electrophysiological patient recordings from the human brain during memory tasks with pupilometry (MC_007)

  Open Research Data

  open access

  • M. Kucewicz
  • J. Cimbalnik
  • C. Topcu
  • M. Lech
  • V. Marks
  • B. Joseph
  • A. Czyżewski
  • G. Worrell

  Data comprise intracranial EEG (iEEG) brain activity, including electrocorticography (ECoG) signals, recorded from over 100 electrodes implanted in one patient throughout various brain regions. These iEEG signals were recorded in epilepsy patients undergoing invasive monitoring and localization of seizures when they were performing a battery of four...

• Invasive electrophysiological patient recordings from the human brain during memory tasks with pupilometry (MC_006)

  Open Research Data

  open access

  • M. Kucewicz
  • J. Cimbalnik
  • C. Topcu
  • M. Lech
  • V. Marks
  • B. Joseph
  • A. Czyżewski
  • G. Worrell

  Data comprise intracranial EEG (iEEG) brain activity, including electrocorticography (ECoG) signals, recorded from over 100 electrodes implanted in one patient throughout various brain regions. These iEEG signals were recorded in epilepsy patients undergoing invasive monitoring and localization of seizures when they were performing a battery of four...

• Invasive electrophysiological patient recordings from the human brain during memory tasks with pupilometry (MC_0011)

  Open Research Data

  open access

  • M. Kucewicz
  • J. Cimbalnik
  • C. Topcu
  • M. Lech
  • V. Marks
  • B. Joseph
  • A. Czyżewski
  • G. Worrell

  Data comprise intracranial EEG (iEEG) brain activity, including electrocorticography (ECoG) signals, recorded from over 100 electrodes implanted in one patient throughout various brain regions. These iEEG signals were recorded in epilepsy patients undergoing invasive monitoring and localization of seizures when they were performing a battery of four...

• Invasive electrophysiological patient recordings from the human brain during memory tasks with pupilometry (MC_009)

  Open Research Data

  open access

  • M. Kucewicz
  • J. Cimbalnik
  • C. Topcu
  • M. Lech
  • V. Marks
  • B. Joseph
  • A. Czyżewski
  • G. Worrell

  Data comprise intracranial EEG (iEEG) brain activity, including electrocorticography (ECoG) signals, recorded from over 100 electrodes implanted in one patient throughout various brain regions. These iEEG signals were recorded in epilepsy patients undergoing invasive monitoring and localization of seizures when they were performing a battery of four...

• Invasive electrophysiological patient recordings from the human brain during memory tasks with pupilometry (MC_0017)

  Open Research Data

  open access

  • M. Kucewicz
  • J. Cimbalnik
  • C. Topcu
  • M. Lech
  • V. Marks
  • B. Joseph
  • A. Czyżewski
  • G. Worrell

  Data comprise intracranial EEG (iEEG) brain activity, including electrocorticography (ECoG) signals, recorded from over 100 electrodes implanted in one patient throughout various brain regions. These iEEG signals were recorded in epilepsy patients undergoing invasive monitoring and localization of seizures when they were performing a battery of four...

• Invasive electrophysiological patient recordings from the human brain during memory tasks with pupilometry (MC_0021)

  Open Research Data

  open access

  • M. Kucewicz
  • J. Cimbalnik
  • C. Topcu
  • M. Lech
  • V. Marks
  • B. Joseph
  • A. Czyżewski
  • G. Worrell

  Data comprise intracranial EEG (iEEG) brain activity, including electrocorticography (ECoG) signals, recorded from over 100 electrodes implanted in one patient throughout various brain regions. These iEEG signals were recorded in epilepsy patients undergoing invasive monitoring and localization of seizures when they were performing a battery of four...

• Invasive electrophysiological patient recordings from the human brain during memory tasks with pupilometry (MC_0020)

  Open Research Data

  open access

  • M. Kucewicz
  • J. Cimbalnik
  • C. Topcu
  • M. Lech
  • V. Marks
  • B. Joseph
  • A. Czyżewski
  • G. Worrell

  Data comprise intracranial EEG (iEEG) brain activity, including electrocorticography (ECoG) signals, recorded from over 100 electrodes implanted in one patient throughout various brain regions. These iEEG signals were recorded in epilepsy patients undergoing invasive monitoring and localization of seizures when they were performing a battery of four...

• Invasive electrophysiological patient recordings from the human brain during memory tasks with pupilometry (MC_0019)

  Open Research Data

  open access

  • M. Kucewicz
  • J. Cimbalnik
  • C. Topcu
  • M. Lech
  • V. Marks
  • B. Joseph
  • A. Czyżewski
  • G. Worrell

  Data comprise intracranial EEG (iEEG) brain activity, including electrocorticography (ECoG) signals, recorded from over 100 electrodes implanted in one patient throughout various brain regions. These iEEG signals were recorded in epilepsy patients undergoing invasive monitoring and localization of seizures when they were performing a battery of four...

• Invasive electrophysiological patient recordings from the human brain during memory tasks with pupilometry (MC_0024)

  Open Research Data

  open access

  • M. Kucewicz
  • J. Cimbalnik
  • C. Topcu
  • M. Lech
  • V. Marks
  • B. Joseph
  • A. Czyżewski
  • G. Worrell

  Data comprise intracranial EEG (iEEG) brain activity, including electrocorticography (ECoG) signals, recorded from over 100 electrodes implanted in one patient throughout various brain regions. These iEEG signals were recorded in epilepsy patients undergoing invasive monitoring and localization of seizures when they were performing a battery of four...

• Invasive electrophysiological patient recordings from the human brain during memory tasks with pupilometry (MC_0023)

  Open Research Data

  open access

  • M. Kucewicz
  • J. Cimbalnik
  • C. Topcu
  • M. Lech
  • V. Marks
  • B. Joseph
  • A. Czyżewski
  • G. Worrell

  Data comprise intracranial EEG (iEEG) brain activity, including electrocorticography (ECoG) signals, recorded from over 100 electrodes implanted in one patient throughout various brain regions. These iEEG signals were recorded in epilepsy patients undergoing invasive monitoring and localization of seizures when they were performing a battery of four...

• Automatic Marking of Allophone Boundaries in Isolated English spoken Words

  Publication

  • J. Rafałko
  • A. Czyżewski

  - Year 2020

  The work presents a method that allows delimiting the borders of allophones in isolated English words. The described method is based on the DTW algorithm combining two signals, a reference signal and an analyzed one. As the reference signal, recordings from the MODALITY database were used, from which the words were extracted. This database was also used for tests, which were described. Test results show that the automatic determination...

  Full text available to download

• Analysis of the harmonic structure of the vowel /a/ taking into account the age and gender of the speaker

  Publication

  • S. Drywa

  - Year 2024

  Sound waves are disturbances propagating through an elastic medium that, upon reaching the ear, elicit auditory sensations. Sounds generated by the surroundings can be captured by a transducer (microphone), which transforms them into an electrical signal. The signal from the microphone is then transmitted to a computer, where software allows for the extraction and analysis of individual tones. This process enables the description...

  Full text to download in external service

• Simple 2-D Direction-of-Arrival Estimation Using an ESPAR Antenna

  Publication

  • Ł. Kulas

  - IEEE Antennas and Wireless Propagation Letters - Year 2017

  In this letter, it has been shown how an electronically steerable parasitic array radiator (ESPAR) antenna can be used for 2-D direction-of-arrival (DoA) estimation employing received signal strength (RSS) values only. The proposed approach relies on changes in RSS values recorded at the antenna output port observed for different vertical and horizontal directions, while antenna’s main beam sweeps 360° area around the ESPAR antenna. Based...

  Full text available to download

• Robert Burczyk mgr inż.

  People

  Robert Burczyk received Eng. degree and M. SC. Eng. degree in electronics and telecommunictions engineering in 2017 and 2018 successively with specialization in radiocommunication systems and networks. The subject of the dissertations was focused on Wireless Body Area Network (WBAN). Currently, he is a PhD student and an employee at the Department of Radiocommunication Systems and Networks, Gdansk University of Technology. His...

• Change Detection in Signals 2023

  e-Learning Courses

  • J. Kozłowski

  Change Detection in Signals - files for students.

• Calibration of acoustic vector sensor based on MEMS microphones for DOA estimation

  Publication

  • J. Kotus
  • G. Szwoch

  - APPLIED ACOUSTICS - Year 2018

  A procedure of calibration of a custom 3D acoustic vector sensor (AVS) for the purpose of direction of arrival (DoA) estimation, is presented and validated in the paper. AVS devices working on a p-p principle may be constructed from standard pressure sensors and a signal processing system. However, in order to ensure accurate DoA estimation, each sensor needs to be calibrated. The proposed algorithm divides the calibration process...

  Full text to download in external service

• Celowe zanieczyszczanie pilotów w łączu w górę w interfejsie 5G NR

  Publication

  • J. Magiera
  • P. Rajchowski

  - Przegląd Telekomunikacyjny + Wiadomości Telekomunikacyjne - Year 2024

  Referat poświęcono zagadnieniu zakłócania sygnałów pilotowych w interfejsie radiowym 5G NR. Przedstawiono charakterystykę sygnału referencyjnego DMRS oraz uwarunkowania możliwości jego selektywnego zakłócenia. Opisano schemat transmisji w kanale fizycznym PUSCH, zaimplementowany w oprogramowaniu Sionna. Zaprezen-towano model symulacyjny oraz założenia badań wpływu zanieczyszczenia pilotów na jakość transmisji. Przedsta-wiono wyniki...

  Full text to download in external service

• Fast impedance measurement method using Laplace transformation

  Publication

  • G. Lentka
  • J. Hoja

  - Year 2007

  Artykuł przedstawia metodę pomiaru impedancji wykorzystującą rzeczywisty uskok jednostkowy step jako sygnał pobudzenia i transformację Laplace jako narzędzie analizy sygnału odpowiedzi testowanego obiektu. Metoda jest dedykowana do badania różnych obiektów technicznych (np. powłok antykorozyjnych, czujników gazu, ceramik, tkanek biologicznych itp.) gdy czas pomiaru nie może być długi. Przedstawiona metoda jest znana ale niezbyt...

• Open-transistor fault diagnostics in voltage-source inverters by analyzing the load current

  Publication

  • W. Śleszyński
  • J. Nieznański

  - Year 2007

  A novel method is presented for the detection andisolation of open-transistor faults in voltage-source invertersfeeding low-power AC motors. The method is based onmonitoring two diagnostic signals, one indicating sustained nearzerovalues of output current and thus permitting fault detection,the other permitting the isolation of the particular transistorwhich went faulty. The latter signal is the ratio of the averagephase current...

  Full text to download in external service

• Using A Particular Sampling Method for Impedance Measurement

  Publication

  • G. Lentka

  - Metrology and Measurement Systems - Year 2014

  The paper presents an impedance measurement method using a particular sampling method which is an alternative to DFT calculation. The method uses a sine excitation signal and sampling response signals proportional to current flowing through and voltage across the measured impedance. The object impedance is calculated without using Fourier transform. The method was first evaluated in MATLAB by means of simulation. The method was...

  Full text available to download

• RSS-Based DoA Estimation Using ESPAR Antenna for V2X Applications in 802.11p Frequency Band

  Publication

  • D. Duraj
  • M. Rzymowski
  • K. Nyka
  • Ł. Kulas

  - Year 2020

  In this paper, we have proposed direction-of arrival (DoA) estimation of incoming signals for V2X applications in 802. 11p frequency band, based on recording of received signal strength (RSS) at electronically steerable parasitic array radiator (ESPAR) antenna's output port. The motivation of the work was to prove that ESPAR antenna used to increase connectivity and security in V2X communication can be also used for DoA estimation....

  Full text available to download

• Wykorzystanie zespolonej pulsacji chwilowej do ślepej synchronizacji symbolowej sygnałów QPSK

  Publication

  • K. Świder

  - Year 2010

  Izochronicznie nadawane i synchronicznie odbierane sygnały QPSK (z ang. Quadrature Phase-Shift Keying) dominują w dzisiejszej radiowej i przewodowej telekomunikacji cyfrowej. Poprawne działanie odbiornika sygnałów QPSK wymaga skomplikowanego systemu synchronizacji poszczególnych etapów odbioru. W skład systemu synchronizacji odbiornika wchodzi odtwarzanie częstotliwości i fazy sinusoidy (fali) nośnej oraz wyznaczanie chwil próbkowania...

• Impact of plastic deformation on magnetoacoustic properties of Fe-2%Si alloy

  Publication

  • L. Piotrowski
  • B. Augustyniak
  • M. Chmielewski
  • F. J. Landgraf
  • M. J. Sablik

  - NDT & E INTERNATIONAL - Year 2009

  W artykule przedstawiono wyniki komplementarnych badań własności magnetycznych stopu Fe-2%Si po deformacji plastycznej. Badania obejmowały pomiary pętli histerezy magnetycznej B(H), magnetycznego efektu Barkhausena oraz emisjii magnetoakustycznej. Badane próbki poddane były deformacji plastycznej do poziomu sięgajćego 8%. Właściwości pętli histerezy zostały skwantyfikowane z wykorzystaniem pola koercji oraz maksymalnej magnetycznej...

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• Determination of Odor Air Quality Index (OAQII) Using Gas Sensor Matrix

  Publication

  • D. Dobrzyniewski
  • B. Szulczyński
  • J. Gębicki

  - MOLECULES - Year 2022

  This article presents a new way to determine odor nuisance based on the proposed odor air quality index (OAQII), using an instrumental method. This indicator relates the most important odor features, such as intensity, hedonic tone and odor concentration. The research was conducted at the compost screening yard of the municipal treatment plant in Central Poland, on which a self-constructed gas sensor array was placed. It consisted...

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