摘要
针对MIMO雷达的正交多相编码信号,在给出限定条件的情况下,采用一台侦察机从不同的方向、多个角度对MIMO雷达进行侦察并且获得有延时样本信号。然后对有延时的样本信号进行处理获得无延迟的样本信号。由于对侦察设备而言,MIMO雷达的信号是盲信号,因此采用盲信号处理技术对样本信号进行处理。首先采用主分量分析算法(PCA)对信号进行预处理并且估计信源个数,再运用盲源分离中独立分量分析的算法(ICA)对样本信号进行分离。通过仿真验证了该方法的有效性,并分析了侦察模型中张开角度的影响。
In this article, MIMO radar generates orthogonal multiply phase coded signal. When existing some conditions, we detect the MIMO radar from different directions and multiple an- gles to obtain the sample signal based on a new detection model. Then the sample signal with time delay is processed to obtain the sample signal without delay. Because the signal of MIMO radar detection equipment is blind, we use the blind signal processing techniques to process the sample signal. Firstly, we use principal component analysis (PCA) to pretreat the signal and estimate the number of sources. Then we use independent component analysis (ICA) of the blind source separation to separate the signal samples. We also analyze the opening angles' in- fluences through simulation.
出处
《电子对抗》
2017年第6期41-47,共7页
Electronic Warfare
关键词
MIMO雷达
新侦察模型
张开角度
主分量分析
独立分量分析
盲源分离
MIMO radar
new detection model
the opening angle
principal component analysis(PCA)
independent component analysis(ICA)
blind source separation