Open AccessDoppler shift and ambiguity velocity caused by relative motion in quantum-enhanced measurement
Author(s) -
Yanghe Shen,
Luping Xu,
Hua Zhang,
Peng Yang
Publication year - 2015
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.23.018445
Subject(s) - doppler effect , physics , ambiguity , relative velocity , optics , ranging , motion (physics) , computational physics , geodesy , classical mechanics , computer science , quantum mechanics , geology , programming language
We study the effect of relative motion on a frequency-entangled-based ranging scheme. Two major puzzles arise, i.e., Doppler shift and ambiguity velocity. During condition of rapid relative motion, Doppler shift invalidates the measurement result of this scheme; while during condition of slow relative motion, the ambiguity velocity turns into a major limitation. If relative speed between targets and measurement platform exceeds the ambiguity velocity, an accumulated profile obtained by the coincidence measurement will be distorted, which causes a lower ranging accuracy. Theoretical analysis shows a time-varying delay can be introduced to solve the two major puzzles.