National Repository of Grey Literature 70 records found  beginprevious61 - 70  jump to record: Search took 0.01 seconds. 
IR UWB modulation methods
Bezucha, Petr
This essay deals with ultrawideband signals and analyses possibilities of their impulse generation and their code and data modulation.
Harmonising of ultrawideband wireless systems with the existing radiocommunication services
Ďurovič, Svetozár
In the paper various problems with the implementation of ultrawideband technology in the regular service are presented. The problem of harmonising the new technology with the existing radiocommunication systems is of paramount importance. Attention to the selected technical questions is given. The report contains contemporary state of art and comment to the regulatory issues in USA, Europe, Japan and othe countries.
Final report on Project M/55/05: Operation and Development of National Time and Frequency Standard - project extension
Čermák, Jan ; Šojdr, Ludvík ; Čemusová, Blanka ; Kuna, Alexander
The report brings a summary of the results obtained by the IREE at the Laboratory of the National Time and Frequency Standard in realizing the M/55/05 project of The Metrology Program of the Czech Office for Standards, Metrology, and Testing in 2005.
Determination of temperature dependence of pyroelectric coefficient and permitivity TGS trough approximation function
Zelinka, Jiří
Technical report describes the numerical method emploeyd for evaluation of properties of tryglicinium sulfate based pyroeletric materials prepared in the IREE. The raw experimental data related to temperature dependence of capacitance and of the polarization curves of the samples are interpolated using appropriate approximation function. The program optimizes parameter values of the function expressing the permitivity and the pyroelectric coefficient.
Final report on Project M/19/05: National Time and Frequency Primary Standard
Čermák, Jan ; Buzek, Otokar ; Čemusová, Blanka ; Šojdr, Ludvík ; Kuna, Alexander ; Pánek, Petr
The report contains a summary of the results achieved at the Laboratory of the National Time and Frequency Standard of the Institute of Radio Engineering and Electronics in primary time and frequency metrology within the M/19/05 project of The Metrology Program of the Czech Office for Standards, Metrology, and Testing in 2005.
The camera vizualization system of precision mesuring situation for semiconductor tester
Kostka, František ; Starý, Robert ; Ronovský, Petr ; Krechler, Jindřich
The CCD camera vizualization system is used for precision position setting of testing needle for topografical I/U measuring characteristic.
Program of metrology development in 2005. Progress report on project M/19/05: operation and development of the National time and frequency standard
Čermák, Jan ; Čemusová, Blanka ; Kuna, Alexander ; Šojdr, Ludvík ; Pánek, Petr
The report brings a summary of the results obtained by the Institute of Radio Engineering and Electronics in the field of primary time and frequency metrology in realizing the M/19/05 project of the Metrology programme of the Czech office for standards, metrology, and testing in 2005.
Frequency scale mapping methods for voice conversion
Přibilová, Anna
The research report compares several approcaches to frequency scale mapping for voice conversion. All the presented methods may be used for transformation of voice characteristics between male and female or childisch. The advantage of the proposed non-linear methods is possibility of their implementation in the text-to-speech systems with cepstral description because of the unchanged number of points of the modified speech spectrum envelope in FFT-based methods.

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