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A practical method to process time and frequency signal.

W Zhou1, Z Li, H Zhou

  • 1Dept. of Meas. and Instrum., Xidian Univ., Xi'an.

IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
|February 2, 2008
PubMed
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This study introduces a novel time and frequency signal processing method using microcomputer clock signal manipulation. The technique achieves precise time signal generation and frequency synthesis with nanosecond-level accuracy.

Area of Science:

  • Digital Signal Processing
  • Microcomputer Architecture
  • Precision Timing

Background:

  • Accurate time and frequency signals are crucial for various applications.
  • Existing methods for signal processing may have limitations in precision or flexibility.

Purpose of the Study:

  • To develop a practical and accurate method for time and frequency signal processing.
  • To enable stable phase stepping, frequency change, and synthesis using microcomputers.

Main Methods:

  • The method involves manipulating the microcomputer's machine cycle period and phase.
  • Key techniques include pulse deletion of high-frequency clock signals and quantified phase delay.
  • Variations are intentionally introduced into the microcomputer clock signal circuit.

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Main Results:

  • Achieved precise time signal generation with accuracy ranging from tens of nanoseconds down to less than 1 nanosecond.
  • Demonstrated the capability for stable phase stepping and frequency change/synthesis.
  • The method allows for periodic or individual implementation of pulse deletion and phase delay.

Conclusions:

  • The proposed method offers a practical approach to high-precision time and frequency signal processing.
  • Microcomputer clock signal modification provides a versatile platform for generating accurate time signals and synthesizing frequencies.
  • This technique has potential applications in fields requiring precise timing and frequency control.