The track association problem of radar and electronic support measure （ESM） has been considered in the literature for several years. This problem is crucial for radar-to-ESM track fusion and is complicated by the pr...The track association problem of radar and electronic support measure （ESM） has been considered in the literature for several years. This problem is crucial for radar-to-ESM track fusion and is complicated by the presence of individual systematic errors and measurement errors. In order to improve the track association of radar and ESM sensors, a pseudo-linear filtering algorithm is proposed to estimate the target states and improve the stability of the filter. It is found that, however, the correct probability of radar- to-ESM track association decreases as the radar measurement error decreases, when the pseudo-linear filter is used for ESM sensor filtering. In view of the strange phenomenon, this paper analyzes the reason for it by using the statistic theory and further performs Monte Carlo simulation to verify the analysis.展开更多
针对电子支援测量(electronic support measurement,ESM)信号存在多径干扰,从而影响信号特征提取以及雷达辐射源识别的问题,提出了一种基于L-Wigner分布的多径信号估计方法。首先分析了多径ESM信号模型和时频域匹配滤波算法,接着研究了L...针对电子支援测量(electronic support measurement,ESM)信号存在多径干扰,从而影响信号特征提取以及雷达辐射源识别的问题,提出了一种基于L-Wigner分布的多径信号估计方法。首先分析了多径ESM信号模型和时频域匹配滤波算法,接着研究了L-Wigner分布对于多分量高阶频率调制信号的分辨性能,根据自身项和交叉项的不同特点,提出采用L-Wigner分布对多径信号进行估计。该方法计算简单,保证了估计结果具有较高的分辨性能。仿真实验结果证明了方法的正确性和有效性。展开更多
基金supported by the National Natural Science Foundation of China (609721596103200161002006)
文摘The track association problem of radar and electronic support measure （ESM） has been considered in the literature for several years. This problem is crucial for radar-to-ESM track fusion and is complicated by the presence of individual systematic errors and measurement errors. In order to improve the track association of radar and ESM sensors, a pseudo-linear filtering algorithm is proposed to estimate the target states and improve the stability of the filter. It is found that, however, the correct probability of radar- to-ESM track association decreases as the radar measurement error decreases, when the pseudo-linear filter is used for ESM sensor filtering. In view of the strange phenomenon, this paper analyzes the reason for it by using the statistic theory and further performs Monte Carlo simulation to verify the analysis.
文摘针对电子支援测量(electronic support measurement,ESM)信号存在多径干扰,从而影响信号特征提取以及雷达辐射源识别的问题,提出了一种基于L-Wigner分布的多径信号估计方法。首先分析了多径ESM信号模型和时频域匹配滤波算法,接着研究了L-Wigner分布对于多分量高阶频率调制信号的分辨性能,根据自身项和交叉项的不同特点,提出采用L-Wigner分布对多径信号进行估计。该方法计算简单,保证了估计结果具有较高的分辨性能。仿真实验结果证明了方法的正确性和有效性。
