QUADRATURE-TO-DIRECTIONAL FORMAT CONVERSION OF DOPPLER SIGNALS USING DIGITAL METHODS


AYDIN N. , FAN L., EVANS D.

PHYSIOLOGICAL MEASUREMENT, vol.15, no.2, pp.181-199, 1994 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 15 Issue: 2
  • Publication Date: 1994
  • Doi Number: 10.1088/0967-3334/15/2/007
  • Title of Journal : PHYSIOLOGICAL MEASUREMENT
  • Page Numbers: pp.181-199

Abstract

Four possible quadrature-to-directional format conversion methods using digital techniques are described. These are the phasing-filter technique, the extended Weaver receiver technique, the Hilbert transform in the frequency domain, and the complex FFT. All methods are implemented to give separated time domain outputs as well as frequency domain outputs. The theoretical descriptions are verified by practical implementations. Each of the methods has been implemented in real-time using a commercially available digital signal processing board.

Four possible quadrature-to-directional format conversion methods using digital techniques are described. These are the phasing-filter technique, the extended Weaver receiver technique, the Hilbert transform in the frequency domain, and the complex FFT. All methods are implemented to give separated time domain outputs as well as frequency domain outputs. The theoretical descriptions are verified by practical implementations. Each of the methods has been implemented in real-time using a commercially available digital signal processing board.