ID 原文 译文
45156 其次，利用可信计算技术和区块链技术对 TPA 进行详细的设计，确保 TPA 执行环境和工作流程的可信性。 Secondly, TPA was designed in detail by using trusted computing technology and block-chain technology to ensure the credibility of the TPA execution environment and workflow.
45157 最后，利用 TPA 云联盟构建数据完整性验证模型， Finally,the data integrity verification model was built by using cloud federation of TPA.
45158 并对模型的正确性、安全性和有效性进行理论和实验分析。 The correctness, security and effectiveness of the model were analyzed theoretically and experimentally.
45159 对于特定辐射源识别的预处理环节，现有符号同步方法存在时延估计方式不妥和插值计算精度不足的问题。 The existing symbol timing algorithms have the problems that the method of delay estimation is improper and the calculation precision of the interpolation is insufficient for the pretreatment of specific emitter identification.
45160 针对该问题，提出一种高精度的符号同步方法。 A high-precision symbol timing algorithm was proposed to solve these problems.
45161 对于时延估计，采用 2 步估计的方式，先由前向算法得到粗估计值，再利用解调得到的发送符号通过局部搜索得到精确值。 Aiming at the former problem, a two-step estimation method was adopted, rough estimation of delay was firstly obtained by the forward algorithm, and then the accurate value was acquired through local search with the demodulated symbols.
45162 对于插值计算，利用窗化法对插值滤波器进行优化设计，改善了滤波器的抗混叠特性，提高了计算精度。 For the latter problem, a window-based approach was used to design an interpolating filter which could optimize the anti-aliasing characteristics and improve the calculation accuracy.
45163 仿真实验表明，与常规符号同步算法相比，该算法能有效解决以上问题，且能在辐射源识别中取得更优的识别效果。 Simulation results show that the proposed algorithm can effectively solve the above problems and achieve better recognition results in the radiation source recognition compared with the conventional symbol timing algorithm.
45164 云计算利用网络使 IT 服务变得弹性可变， As the combine of cloud computing and Internet breeds many flexible IT services.
45165 如果用户需要登录到云端来使用服务与应用，系统需要确保使用者的身份合法，才能为其服务。 In cloud computing, a user should be authenticated by a trusted third party or a certification authority before using cloud applications and services.