ID 原文 译文
10374 考虑到内、外场应力环境之间的差异,提出了基于修正系数的Wiener过程双参数修正模型; Considering the difference between internal and external field stress environment, is proposed based on dual parameter correction model correction coefficient of Wiener process;
10375 分别建立了步进ADT数据模型与外场退化数据模型,得到各应力下分布参数估计值; Established step by step ADT external force degradation data model, data model and get the stress distribution under the parameters estimate;
10376 利用加速因子,将各加速应力下分布参数估计值折算到正常工作应力下,构成未知参数先验分布的数据样本; Using acceleration factor, the accelerated stress distribution under the parameters under normal working stress estimate is converted to data samples for unknown parameters of the prior distribution of;
10377 采用CvM检验法,确定未知参数最优先验分布类型及其超参数估计值; Unknown parameters using CvM test, determine the most preferred check distribution type and parameter estimate;
10378 构建了外场退化数据下未知参数的后验分布函数,采用马尔可夫蒙特卡罗方法,得到参数的后验分布均值。 Degradation data is constructed under the posterior distribution function of the unknown parameters, using markov monte carlo method, get average parameters of the posterior distribution.
10379 通过实例分析验证了所提方法的正确性和实用性,结果表明,本方法可有效处理先验ADT信息与外场退化信息之间的融合评估问题。 Through the case analysis verified the correctness and practicability of the proposed method, the results show that this method can effectively handle a priori ADT information fusion between information and field degradation assessment problem.
10380 针对低信噪比和符号速率采样条件下的载波同步问题,提出了一种新型的复合载波跟踪环,同时也给出了一种较直观的环路参数确定方法。 For under the condition of low SNR and symbol rate sampling of carrier synchronization problem, put forward a new kind of composite carrier tracking loop, also gives a more intuitive method of loop parameters.
10381 该载波同步环改进了原有的符号硬判决算法,并通过引入采样速率变换模块使得数字锁频环(frequency-locked loop,FLL)和数字锁相环(phase-locked loop,PLL)工作在不同采样速率条件下,来提高在低信噪比环境中载波频偏和相偏的估计精度。 ‭The symbol of the carrier synchronization loop to improve the original hard decision algorithm, and through the introduction of sampling rate conversion module makes digital frequency locked loop (frequency - locked loop, FLL) and digital phase-locked loop (phase - locked loop, PLL) work under the condition of different sampling rate, to improve in the low SNR environment carrier frequency deviation and phase deviation estimation precision.
10382 该参数确定方法是在z域中,直接根据闭环系统的稳定性和单位阶跃响应特性来选择最优的参数。 ‭The parameter determination method is in the z domain, directly according to the stability of the closed-loop system and unit step response characteristics to choose the optimal parameters.
10383 仿真结果表明,该参数确定方法具有很好的可行性,且所提出的载波跟踪环在较低信噪比条件下能获得良好的同步性能。 ‭The simulation results show that the parameter determination method has the very good feasibility, and proposed the carrier tracking loop under the condition of low SNR can get good synchronization performance. ‭