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距离扩展目标的一种相位信息检测器

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摘要 采用频率.慢时间子空间模型描述的宽带雷达回波信号,在脉压后的离散频率域,各距离频率单元得到的矢量沿着回波序号可以表示为一个单频率复谐波信号。将各次回波信号与前一次回波共轭相乘,相位变为一个定值。没有目标回波信号时,复高斯噪声和用球不变随机变量描述的杂波的相位服从一7/"到万的均匀分布,共轭相乘后其分布不变。针对这一特点,提出了距离扩展目标检测的相位综合检测器算法。理论分析和计算仿真试验表明,相位综合检测器不需要目标散射点密度和杂波协方差矩阵的估计,对平方和形式的杂波噪声不敏感,且具有恒虚警能力。
作者 问翔
出处 《电信技术研究》 2014年第4期26-32,共7页 Research on telecommunication technology
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参考文献11

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