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中文摘要：
在综合直扩信号风险分析、截获方法的基础上，率先对直扩信号安全性能评估模型进行了研究，建立了基于AHP（AnalyticHierarchyProcess，层次分析法）的直扩信号安全性能评估模型，详细给出了直扩信号安全指数的计算过程，并对多种直扩信号的安全指数进行了仿真。仿真结果袁明：评估方法有效；提出的模型可以定量评价不同直扩信号的安全性能，为直扩信号的安全性设计提供定量的依据。此外，还提出了卫星测控直扩信号的安全等级分类原则和卫星安全等级要求。
英文摘要：
Safety performance evaluation models for DSSS （Direct Sequence Spread Spectrum） signals are studied based on analysis of risks to DSSS signals and discussions on intercept methods. A DSSS signal safety performance evaluation model based on AHP （Analytic Hierarchy Process） is established. Details of DSSS signal safety index calculation process are given and the safety indexes of numerous DSSS signals are simulated. As shown by the simu- lation results, the evaluation method is valid and the proposed model quantitatively evaluates the safety performance of different DSSS signals and provides quantitative basis for safety design of DSSS signals. Besides, DSSS signal safety level classification principles and requirements of satellite TT~C （Telemetry, Tracking and Command） are proposed.
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