Correction of Spatial Heterodyne Interferogram Base on Frequency Domain Analysis

Analysis of Velocimetry Processing Method Based on Doppler Asymmetric Spatial Heterodyne Spectrometer

“…And in the following years, high-precision measurements of atmospheric wind fields were achieved on ground-based and airborne detectors [6][7][8]. As a result, DASH spectroscopy technique has begun to receive significant attention and active expansion from researchers in related fields [9][10][11][12][13][14][15][16][17]. In the initial DASH spectral velocimetry theory, it introduced measuring the phase shift of interference fringes to reverse the Doppler velocity difference, but did not explain the implementation mechanism and constraint conditions of obtaining high measurement accuracy using interferometric phase measurement method.…”