数字化宽带测向系统中的相位差测量及误差分析  

Phase Difference Measuring and Error Analysis in the Digital Wideband Direction-finding System

作　　者：王国华[1] 李长满[1] 许剑锋[1] 

机构地区：[1]第二炮兵工程学院101教研室

出　　处：《电子技术（上海）》2009年第1期61-64,共4页Electronic Technology

摘　　要：干涉仪测向在电子侦察领域中广泛运用。为了进一步提高干涉仪的测向精度,增强对宽带信号的适应能力和扩展系统的工作频率范围,提出了数字化宽带测向系统的整体解决方案,重点讨论数字化宽带信号的相位差测量及误差分析、概率解模糊算法和天线阵列基线设计。这是系列论文的第一篇,给出了数字化宽带测向系统模型,提出了适合各种宽带信号的数字化相位差测量方法,着重推导了相位差测量的数字化方法误差函数和信号相位误差的理论分布密度函数。Interferometer direction-finding system is widely used in the electronic reconnaissance field. In order to improve the direction-finding precision, to enhance the ability of measuring the wideband signal andto enlarge the working frequency range, a new digital wideband direction-finding system is put forward in this series of papers. They emphasize on three problems which include the phase difference measurement of the digital wideband signal and error analysis, the algorithm of solving phase difference ambiguity and how to design the antenna array baseline. It is the first paper, in which the digital wideband direction-finding model is given and the phase difference measuring method applied to all wideband signals is put forward, lt emphasized on deducing the digital method error function of the phase difference and the theoretical distribution density function of the signal phase error.

关 键 词：测向 干涉仪 相位差 解模糊 

分 类 号：TN953[电子电信—信号与信息处理] TM933.312[电子电信—信息与通信工程]