多目标跟踪中的数据关联算法

在目标的正确回落入其跟踪门内的概率PtG <1的情况下 ,推导了联合概率数据关联算法中联合事件发生概率的计算公式。提出了一种能容易地产生多目标和多回波的联合事件的方法———假设树方法。并且提出了一种新的多目标跟踪中数据关联的快速算法。此算法用于解决杂波环境中多目标跟踪的数据关联问题 ,取得了较好的结果。     

Signal analysis and processing for random binary phase coded pulse radar

The application of the random binary phase coded signal in the CW radar system has been limited by the difficulty to isolate the tranmission and reception signal. In order to make use of the random binary phase coded signal, the random binary phase coded pulse radar (RBPC-PR) system has been studied. First, the average ambiguity function (AAF) of the RBPC-PR signal has been analyzed. Then, a statistical method of reducing the range sidelobe (RSL) is presented. Finally, a signal processing scheme of the RBPC-PR is developed. The simulation results show that by using the scheme, the jamming immunity of the system, the resolution and accuracy of distance and velocity have been improved, and the distance and velocity vagueness caused by periods can also be removed. The RSL can be reduced over 30dB by the statistical average method, thus the probability ambiguity caused by random noise can be avoided.     

高速神经网络HS-K-WTA-2的研究

该文提出了一种新的K-Winners-Take-All神经网络:High-Speed-K-Winners-Take-All-2(HS-K-WTA-2).HS-K-WTA-2以竞争学习算法为基础.HS-K-WTA-2能够从任何一个数集中识别出K个较大的数,或K个较小的数.该文给出HS-K-WTA-2算法及算法复杂度的分析结果.用专门为研究K-WTA神经网络开发的仿真程序对HS-K-WTA-2、HS-K-WTA和Winstrons进行仿真研究.结果显示:当所取的数集N较大时,HS-K-WTA-2要比Winstrons和HS-K-WTA速度更快.HS-K-WTA-2的硬件实现比Winston的硬件实现要简单,比HS-K-WTA的硬件实现复杂.     

LMS算法中稳态均方误差的研究

该文详细讨论了ＬＭＳ算法中输入信号相关性，加权数目和稳态均方误差的关系。通过公式推导，从理论上证明了增加加权数目并不能保证减小稳态均方误差。对于具体的输入信号?存在一个最佳的加权数目，使稳态均方误差最小，再增加权数目，稳态均方误差有增大的可能。     

多通道幅相误差对空域谱及分辨性能影响的分析

分析了通道幅相误差对空间目标参数估计算法(MUSIC)的影响,推导了幅相误差条件下空域谱的一阶统计表达式和分辨门限表达式,得出幅相误差和空域谱误差及分辨门限的定量关系.计算机仿真证明了理论分析的正确性.给出的结果对阵列设计人员具有一定的参考价值.