Shanghai Institute of Technical Physics
Space astronomical detection commonly uses CCD as the main detector, but an extreme radiation environment can affect CCD performance and, in turn, impact data acquisition. To gain a deeper understanding of the mechanism"s impact on data acquisition, this paper, based on the SRH theory, discusses the defects" effects on charge capture and release during transfer, and establishes a transfer model based on the CCD electrode level. The operation principle of defects under different conditions is simulated. The model is used to simulate STP timing and discuss the impact of timing on data acquisition in actual use and the method of extracting relevant parameters from STP timing data, as well as the relationship between the parameters. The model assists in understanding the impact of radiation defects on CCD data transfer, simulating STP timing, and utilizing STP timing to acquire CCD defect parameters in actual applications.