A Squarewave F.M. Servo System with a Digital Signal Processing for Cesium Frequency Standards,

Abstract

This paper describes a servo system with a digital signal processing which has been applied to a cesium frequency standard recently. In contrast to the former servo system which adopted an analogue lock-in system with 2 Hz frequency modulation, the new system has various advantages such as a good linearity of modulation and demodulation, little dc offset of signal processing and easy compensations for optimum control. Some experiments at other laboratories show that the linear dc drift of output signal can be removed by a signal processing with the second order differences.

Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1982
Accession Number
ADP001525

Entities

People

  • Y. Koga
  • Y. Nakadan

Tags

DTIC Thesaurus Topics

  • Analogs
  • Compensation
  • Contrast
  • Demodulation
  • Digital Signal Processing
  • Frequency
  • Frequency Modulation
  • Frequency Standards
  • Linearity
  • Modulation
  • Signal Processing
  • Standards

Fields of Study

  • Engineering

Readers

  • Computer Science/Computer Engineering/Data Science/Digital Signal Processing.
  • Electronics Engineering
  • Radio communications and signal processing.