TY  - JOUR
AU  - Wei, Daikang
AU  - Gong, Qiucheng
AU  - Chen, Qiuyu
AU  - Zhu, Yajun
AU  - Kaufmann, Martin
AU  - Olschewski, Friedhelm
AU  - Knieling, Peter
AU  - Dötzer, Florian
AU  - Mantel, Klaus
AU  - Xu, Jiyao
AU  - Koppmann, Ralf
AU  - Riese, Martin
TI  - Modeling and correction of fringe patterns in Doppler asymmetric spatial heterodyne interferometry
JO  - Applied optics
VL  - 61
IS  - 35
SN  - 1559-128X
CY  - Washington, DC
PB  - Optical Soc. of America
M1  - FZJ-2022-05913
SP  - 10528 - 10537
PY  - 2022
AB  - Doppler asymmetric spatial heterodyne (DASH) interferometry is a novel concept for observing atmospheric winds. This paper discusses a numerical model for the simulation of fringe patterns and a methodology to correct fringe images for extracting Doppler information from ground-based DASH measurements. Based on the propagation of optical waves, the fringe pattern was modeled considering different angular deviations and optical aberrations. A dislocation between two gratings can introduce an additional spatial modulation associated with the diffraction order, which was seen in laboratory measurements. A phase correction is proposed to remove phase differences between different row interferograms, which is the premise for calculating the average interferogram to improve the signal-to-noise ratio. Laboratory tests, simulation results, and Doppler velocity measurements indicate that a matrix determined in the laboratory can be applied to correct interferograms obtained from ground-based DASH measurements.
LB  - PUB:(DE-HGF)16
C6  - 36607115
UR  - <Go to ISI:>//WOS:000907162800002
DO  - DOI:10.1364/AO.473147
UR  - https://juser.fz-juelich.de/record/916067
ER  -