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Acta Optica Sinica
The influence of signal-to-noise ratio (SNR) of spatial low-coherence interference on demodulated interference order jump and absolute phase, combining with monochromatic frequency absolute phase demodulation algorithm,is simulated and analyzed. The simulation result shows that it can avoid interference order jump when SNR exceeds 18 dB. In this case, standard deviation of demodulated absolute phase decreases linearly with the increase of SNR, and the value of standard deviation with SNR of 25doi:10.3788/aos201535.1106003 fatcat:xpvmhmopgnbcja4xwx4qyddtyu