Magazine Article

Digital Receiver Phase Meter

TBMG-2649

03/01/2008

Abstract
Content

The software of a commercially available digital radio receiver has been modified to make the receiver function as a two-channel low-noise phase meter. This phase meter is a prototype in the continuing development of a phase meter for a system in which radio-frequency (RF) signals in the two channels would be outputs of a spaceborne heterodyne laser interferometer for detecting gravitational waves. The frequencies of the signals could include a common Doppler-shift component of as much as 15 MHz. The phase meter is required to measure the relative phases of the signals in the two channels at a sampling rate of 10 Hz at a root power spectral density <5 microcycle/(Hz)1/2 and to be capable of determining the power spectral density of the phase difference over the frequency range from 1 mHz to 1 Hz. Such a phase meter could also be used on Earth to perform similar measurements in laser metrology of moving bodies.

Meta TagsDetails
Citation
"Digital Receiver Phase Meter," Mobility Engineering, March 1, 2008.
Additional Details
Publisher
Published
Mar 1, 2008
Product Code
TBMG-2649
Content Type
Magazine Article
Language
English