Influence of the four-quadrant fixed mirror on the temperature and wind velocity inversion for the near-infrared static Mars wind imaging interferometer

Abstract

The operating principle of the static Martian wind imaging Michelson Interferometer (MWIMI) developed by our research group is discussed in this paper, and the errors caused by the core components of the interferometer are analyzed, including the tilt of the quadrangle fixed mirror, surface heterogeneity and reflectivity errors. This work mainly studies the influence of error on the measurement of wind speed and temperature, and the error curve is obtained by computer simulation. The limit of tilt angle, surface accuracy and reflectivity of the four-quadrant fixed mirror can be obtained from this curve. Ultimately, the accuracy of the MWIMI instrument is discussed according to the actual design parameters, which verifies the high measurement accuracy of the instrument. This study lays a theoretical foundation for the design, development and engineering of a new type of wind imaging interferometer, and provides a reference for the study of Mars atmosphere, which is of great significance for the climate change, environmental detection and space exploration of Mars.