This paper studies the effect of the analog front-end signal processor in CCD imaging system on the total ionizing dose radiation effect after 60Co-gamma-ray irradiation, and focuses on the change of the device's static operating current, low-level reference voltage, high-level reference voltage and dynamic output digital code signal. The results show that after certain dose radiation, the static operating current increases significantly with the total dose increase, the high and low reference voltage decreases with the total dose increase, and the dynamic output signal does not correspond to the input signal with the increase of the total dose. The above work can provide reference for in-depth study of radiation reinforcement and radiation damage assessment of analog front-end signal processors in space application environment.
Combined with two-channel one-dimensional field of view imaging technique and Spatial Heterodyne Spectroscopy (SHS), hyper-resolution spatial heterodyne spectrometer can be used for hydroxyl radical OH detection with limb observations from a satellite. The accuracy of field registration of the spectrometer two channel directly affects the detection accuracy of hydroxyl radical OH density, and the spatial stop and spectral stop of each channel are in different positions on the path of light. The method of spatial and spectral dimension field registration is given first, and then the method of field of view registration between channels is given. The quantitative effect of the parameters of the registration method on the accuracy of the field registration is analyzed theoretically, and the verification test is carried out based on the long focal length collimator. The results show that the accuracy of field of view registration in this paper is better than 99.2%. It provides a theoretical basis for the tolerance of the spatial field of view of the spectrometer.