ID	原文	译文
8984	卫星导航的星座可用性是评价导航系统性能的重要指标之一。	Satellite navigation constellation availability is one of the important indexes of performance evaluation of navigation system.
8985	基于马尔可夫过程建立了同时考虑卫星故障率和修复率的单星可用性模型,结合卫星的备份情况提出了空间信号层和服务层的星座可用性评估方法模型。	Based on markov process is established at the same time considering satellite failure rate and repair rate of single availability model of space are presented with the backup of the satellite signal layer and service layer constellation model of usability evaluation methods.
8986	基于上述评估模型,结合大量实测数据分析了空间信号层和服务层的星座可用性概率。	Based on the above assessment model, combining a large amount of measured data is analyzed spatial signal layer and service layer constellation availability of probability.
8987	结果表明:全球定位系统(global positioning system,GPS)星座可用性评估模型是有效的,GPS星座可用性符合其系统性能规范。	The results show that the global positioning system (global positioning system, GPS) constellation usability evaluation model is effective, GPS constellation availability in accordance with the system performance specifications.
8988	提出的星座可用性评估方法对北斗卫星导航系统的全球化建设及其可用性评估有一定的参考价值。	Constellation usability evaluation method is proposed for the globalization of beidou satellite navigation system construction and its usability evaluation has certain reference value.
8989	提出了一种基于角度量测统计特性差异的雷达距离多假目标欺骗干扰识别方法。	Is put forward based on the statistical feature of Angle measurement difference of false target deception jamming distance of radar recognition method.
8990	首先针对传统的角度量测卡方检验方法容易将相同角度分辨单元内的多个真实目标误判为距离多假目标干扰的问题,利用虚假目标与真实目标距离量测之差的均值通常为时不变常数的特点,将角度量测卡方检验与距离量测差均值和方差联合检验相结合,实现了距离多假目标干扰存在性的准确判别;	First in view of the traditional method of Angle measurement chi-square easily within the same Angle resolution cell of multiple real goal mistaken for distance is the problem of multiple false targets jamming, using false target and the difference between the real target distance measurement of the average of the often too constant characteristic, the Angle and distance measuring chi-square measurement difference of mean and variance joint inspection unifies, has realized the distance of the existence of multiple false targets jamming accurately judging;
8991	然后对多个时刻量测进行积累,并通过对应时刻角度量测做差,构造样本集合;	Then to accumulate, multiple time measurement and Angle measurement by corresponding moment do bad, construct sample collection;
8992	最后利用虚假目标比真实目标角度量测方差大的特点,采用量测方差聚类划分的方法,实现了真-假目标的准确鉴别。	Finally use false target is larger than the real target Angle measurement variance characteristics, adopt the method of measurement variance clustering division, to achieve the true and false targets accurately identify.
8993	基于不同分类器对同一样本分类能力不同,同一分类器对不同样本可分程度不同的思想,为不同样本赋予不同融合权重,提出了一种基于熵的自适应加权投票高分辨距离像(high range resolution profile,HRRP)融合识别方法。	Based on different classifier of the same sample classification ability is different, the same classifier with different degree of sample can be divided into different thoughts, the weight given to different samples of different fusion, this paper proposes a adaptive weighted voting based on entropy of high resolution distance (high range resolution profile, HRRP) fusion recognition method.