By Topic

On the Resolution of the Interferometric Measurement of the Angular Velocity of Moving Objects

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

1 Author(s)
Nanzer, J. A. ; Johns Hopkins University Applied Physics Laboratory, Laurel, MD, USA

An analysis of the resolution of a new method of measuring the angular velocity of moving objects using an interferometric sensor is presented in this paper. The frequency of the sensor response is proportional to the angular velocity of the object, which can thus be calculated with a simple frequency analysis of the sensor output. The resolution of the frequency measurement is therefore representative of the resolution of the angular velocity. The derivation of the interferometer response to a single source is presented, and the resolution of the angular velocity measurement is derived for an ideal interferometer beam pattern and a more realistic Gaussian shaped beam pattern. The normalized frequency resolution is shown to be inversely proportional to the beamwidth of the interferometer pattern and inversely proportional to the antenna baseline. Measurements of a walking human taken with a narrow-beamwidth 27.4 GHz passive radiometric interferometer with multiple antenna baselines are presented, verifying the inverse dependence of the resolution on the baseline. Comparison of theoretical results to the measured frequency shift and measured frequency resolution show good agreement.

Published in:

Antennas and Propagation, IEEE Transactions on  (Volume:60 ,  Issue: 11 )