Application of spatial heterodyne spectroscopy interferometer in velocity measurement and error analysis

Because of its high spectral resolution, spatial heterodyne spectroscopy(SHS) technology has been rapidly developed in various fields. The system error of inertial navigation drifts with time. Besides, satellite navigation has a delay in deep space exploration. SHS Interferometer is an effective method to obtain the velocity information of the deep space probe accurately and autonomously. The simulation experiment of velocity measurement by SHS interferometer using monochromatic light as a light source shows that the method can effectively acquire the velocity information of deep space detector. The error analysis and Simulation of the SHS interferometer show that the error of instrument installation should be within a small range to obtain meaningful speed information.