卫星电子系统抗总剂量性能评估及验证

Evaluation and Verification of Total Dose Hardness for Electronic System of Satellite

提出了一种基于功能分解的卫星电子系统抗总剂量性能评估方法,并基于卫星典型的数据处理系统中所用元器件的总剂量试验测试数据,利用本文方法评估得到了该系统的数据处理控制模块的平均失效吸收剂量为56.9 krad(Si)。该值与试验结果53.7 krad(Si)之间的相对偏差为6%,验证了本文提出的卫星电子系统抗总剂量性能评估方法的有效性。

Based on the simplified model for evaluating the radiation hardness of electronic systems,the Bayesian networks assessment method of total dose performance for electronic system of satellite,considering the radiation failure probability of the bottom components and the probability importance between elements,is established.According to the experimental data of devices in data processing system of satellite,the total absorbed dose failure level of data processing is 53.7 krad(Si).By using the evaluation method proposed in this paper,the failure probability of the data processing control module is 56.9 krad(Si).The relative difference between the results of the evaluation method and the experimental results is 6%,which verifies the effectiveness of the evaluation method in this paper.