Beat wave interferometry for measuring relative motion.
A new approach to detecting relative motion is proposed based on measuring the beat frequency. A formula is derived for the beat frequency as a function of the speed of translation. A principal sketch of an experimental setup implementing the new idea is proposed, and the effects of possible small differences in the frequencies and phases of the sources are discussed.
Christov
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Department of Mathematics, University of Louisiana at Lafayette, Lafayette, Louisiana 70504, USA. christov@louisiana.edu