| 相参宽带复包络正交解调器的误差分析与校正探讨 |
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| 引用本文： | 刘国靖,潘泉,张洪才,戴冠中.相参宽带复包络正交解调器的误差分析与校正探讨[J].西北工业大学学报,2001,19(3):443-446. |
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| 作者姓名： | 刘国靖 潘泉 张洪才 戴冠中 |
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| 作者单位： | 西北工业大学多目标跟踪研究所, |
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| 基金项目： | 国家高技术863-B410-7资助 |
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| 摘 要： | 给出了用于高功率微波短脉冲雷达接收机的接收相参宽带复包络正交解调器的构成，从理论上对其误差的数学模型进行了较为详尽的描述，分析了解调器正交通道幅相不一致性以及本振泄漏和直流偏置漂移等因素对大动态宽带信号处理的影响，对可能采用的几种系统校正方法进行了初步探讨。
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| 关 键 词： | 相参 复包络 宽带正交解调器 误差校正 多普勒雷达 信号处理 校正方法 |
| 文章编号： | 1000-2758(2001)03-0443-04 |
| 修稿时间： | 2000年6月5日 |
On Improving Demodulation Performance of Short-Duration Pulse Radar Receiver System |
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| Liu Guojing,Pan Quan,Zhang Hongcai,Dai Guanzhong.On Improving Demodulation Performance of Short-Duration Pulse Radar Receiver System[J].Journal of Northwestern Polytechnical University,2001,19(3):443-446. |
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| Authors: | Liu Guojing Pan Quan Zhang Hongcai Dai Guanzhong |
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| Abstract: | Quadrature demodulation errors of receiver correlation wide band complex envelope quadrature demodulator can affect adversely target range resolution, target imaging and identification capability of short duration pulse radar receiver system; these errors may even produce fairly strong false demodulation signals. In subsection 2.1, we analyze in detail the effects of amplitude and phase mismatch on wide band processing. In subsection 2.2, we analyze the effects of local oscillation, breakthrough and DC offset errors on wide band processing. In subsection 3.2, we discuss how to calibrate the above mentioned errors. Calculated results shown in Fig.2 shows that our method for improving performance of short duration pulse radar receiver system gives promise of being feasible. |
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| Keywords: | receiver correlation complex envelope wide band quadrature demodulation error analysis and calibration |
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