ID |
原文 |
译文 |
49317 |
算例仿真与分析表明,提出的模型真实有效、可行性强,能够很好地解决阵面分布不均匀的相控阵天线维修优化问题。 |
The example simulation and analysis show that the proposed model is real and effective, the feasibility is strong, can effectively solve the uneven distribution of front of phased array antenna maintenance optimization problem. |
49318 |
船载X波段雷达图像中风条纹的完整性因舰船运动而破坏,影响风条纹法反演海面风向准确性,而利用雷达散射截面反演风向不受雷达载体运动的影响。 |
The integrity of the shipborne x-band radar image stroke stripe damage due to ship motion, affect the wind direction stripe method about the accuracy, and the use of radar scattering cross section for inversion of the wind is not affected by radar carrier movement. |
49319 |
通过建立雷达散射截面与天线照射方向的谐波函数关系,解决了局部遮挡问题,利用预处理后的雷达图像数据,通过最小二乘法拟合出谐波函数的系数,谐波函数的最大峰值点对应的方向就是反演风向相对航向的角度,再根据此时的航向就可以计算出风向。 |
Through the establishment of radar scattering cross section and the direction of the antenna radiation harmonic function relation, and can solve the problem of partial occlusions, using the data from the radar image after pretreatment by least squares fitting out harmonic function coefficient, the maximal peak value of harmonic function corresponding direction is the inversion of the wind relative heading Angle, according to the heading direction of the wind can be calculated. |
49320 |
利用实测数据验证海面风向反演算法,并与船载风向标测得的数据进行比对,结果表明,由雷达散射截面反演出的风向与参考风向基本一致。 |
Sea surface wind inversion algorithm is validated with the measured data, and the ship vane compare the measured data, the results show that the radar scattering cross section the performances of wind direction and reference direction. |
49321 |
针对性能退化过程服从Wiener过程的产品,运用贝叶斯统计推断法,提出了一种融合同类产品加速退化试验(accelerated degradation test,ADT)信息与个体外场退化信息的可靠性评估方法。 |
Products aimed at the performance degradation process obey the Wiener process, by using Bayesian statistical inference method, this paper proposes a fusion of similar products accelerated degradation test (accelerated degradation test, ADT) information with individual field degradation method of reliability assessment. |
49322 |
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; |
49323 |
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; |
49324 |
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;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; |
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 Unknown parameters using CvM test, determine the most preferred check distribution type and parameter estimate; |
49325 |
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. |
49326 |
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. |