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33 814 (0,173s)

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Search for Instantaneous Frequency from the Series of Time Intervals

A more precise method of the instantaneous-frequency determination is proposed.

JA - Elektronika a optoelektronika, elektrotechnika

  • 2000
  • D
Result

High-frequency analysis of price clustering and instantaneous volatility

Main topics of the document: financial modeling; price clustering; instantaneous volatility; high-frequency data; score-driven models......

Statistics and probability

  • 2022
  • O
  • Link
Result

Time-Frequency Representation of Instantaneous Frequency Using a Kalman Filter

In this paper, a new method for obtaining a time-frequency representation of instantaneous frequency is introduced . A Kalman filter serves for dissociation of signal into modes with well defined instantaneous ...

JB - Senzory, čidla, měření a regulace

  • 2007
  • D
Result

Magnetic resonance technique of gradient magnetic field measurement

The paper describes the Instantaneous Frequency of Spin Echo (IFSE) and Instantaneous Frequency of Spin Echoes Series (IFSES) methods for the measurement of the gradient magnetic field time and spatial characterist...

JA - Elektronika a optoelektronika, elektrotechnika

  • 2003
  • D
Result

Instantaneus freguency of spin echo method for gradient magnetic fields measurement on MR systems.

The interesting method of the gradient magnetic field measurement, called Instantaneous Frequency Method (IF method), can be used to find out the quality of the gradient fields with sufficient precision. The measurement can be perfo...

JA - Elektronika a optoelektronika, elektrotechnika

  • 2002
  • Jx
Result

Instantaneous frequency deviation estimation by correlation methods

This paper presents results obtained with a DSP based experimental measuring system intended to evaluate instantaneous angular velocity deviations. The mathematical background for the used method is presented, simulation with a known signal ...

JA - Elektronika a optoelektronika, elektrotechnika

  • 2007
  • D
Result

Phase of Arrival Ranging Method for UHF RFID Tags Using Instantaneous Frequency Measurement

frequency modulation (LFM) chirp. The phase of signal arrival is converted to the instantaneous frequency of a FMCW beat using a delay-multiply FSK demodulator with signal instantaneous frequency. The mat...

JA - Elektronika a optoelektronika, elektrotechnika

  • 2010
  • D
Result

Instantaneous Frequency Deviation Estimation by Correlation Methods

This paper presents results obtained with a DSP based experimental measuring system intended to evaluate instantaneous angular velocity deviations. The mathematical background for the used method is presented, simulation with a known signal ...

JA - Elektronika a optoelektronika, elektrotechnika

  • 2007
  • D
Result

Filtration of the Signal with Time-Variable Instantaneous Frequency in the Gradient Magnetic Filed Measurement

The distortions of MR signal caused by noise decrease the precision of measurement of dynamical characteristics of gradient magnetic field. A few techniques for filtration of MR signal with variable instantaneous frequency are prese...

JA - Elektronika a optoelektronika, elektrotechnika

  • 2000
  • D
Result

Time-Frequency Representation of Signals Using Kalman Filter

In this chapter, a new method for obtaining a time-frequency representation of instantaneous frequency is introduced . A Kalman filter serves for dissociation of signal into modes with well defined instantaneous

JB - Senzory, čidla, měření a regulace

  • 2008
  • C
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