| 低通滤波器法实现数字正交相检镜频分析 |
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| 引用本文： | 王建涛,彭世蕤,胡林华. 低通滤波器法实现数字正交相检镜频分析[J]. 现代雷达, 2005, 27(1): 22-23,61 |
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| 作者姓名： | 王建涛 彭世蕤 胡林华 |
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| 作者单位： | 1. 北京理工大学机电工程学院,北京,100081
2. 空军雷达学院微波工程系,武汉,430010 |
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| 摘 要： | 文中讨论了低通滤波器法实现正交相干检波的基本原理，深入分析了其信号的流程，对该方法中镜频的定义进行了明确的阐述，着重讨论了镜像抑制并进行了相应仿真，分析和仿真结果对于低通滤波器法实现正交相干检波的镜频抑制有一定指导意义。
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| 关 键 词： | 数字正交相检 低通滤波器法 镜频 幅相一致性 |
Analysis of Mirror Frequency in Quadrature Coherent Detector via LPF Method |
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| WANG Jian-tao,PENG Shi-rui,HU Lin-hua. Analysis of Mirror Frequency in Quadrature Coherent Detector via LPF Method[J]. Modern Radar, 2005, 27(1): 22-23,61 |
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| Authors: | WANG Jian-tao PENG Shi-rui HU Lin-hua |
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| Abstract: | The basic principle of quadrature coherent detector using LPF method is discussed. The flow of signal is analyzed in detail. The definition of mirror frequency is presented explicitly in this method. Mirror frequency rejection is discussed emphatically,and simulations are made. The analysis conclusion and the simulation results are instructive for eliminating mirror frequency signals in quadrature coherent detector with LPF method. |
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| Keywords: | digital quadrature coherent detector LPF method mirror frequency consistency to amplitude and phase |
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