2026-10-12T01:35:35Z https://www.scidb.cn/oai

10.57760/sciencedb.o00009.00370 2023-02-28T11:01:44Z

2023-02-28 An efficient Doppler-shift generator for simulating winds in the middle and upper atmosphere doi:10.57760/sciencedb.o00009.00370 en We report a novel optical Doppler-shift generator that simulates a frequency shift of airglow emission lines introduced by wind in the middle and upper atmosphere for calibrating passive optical interferometers. The generator avoids shortcomings of traditional motor-driven Doppler-shift generators in terms of stability and security while improving accuracy and simplifying assemblies. A simulated wind speed can be determined simultaneously using a light-beat method. The wind error simulated by the generator mainly comes from the light source, which is about 0.63 m/s. An experimental demonstration was conducted by using a calibrated Fabry-Perot interferometer and showed that a root mean square of the measurement uncertainty is 0.91 m/s. The novel Doppler-shift generator was applied to calibrate an Asymmetric Spatial Heterodyne Spectrometer (ASHS) type interferometer successfully. The results demonstrate the feasibility of the new generator. middle and upper atmosphere; ASHS; calibration; wind detection Zhu Guangyi Zhu Yajun PUBLIC https://creativecommons.org/publicdomain/zero/1.0/ dataset http://www.doi.org/10.1146/annurev.an.12.100183.000541 Science Data Bank