| 引用本文: | 邓新蒲,卢启中,孙仲康.数字式相位差测量方法及精度分析.[J].国防科技大学学报,2002,24(5):70-74.[点击复制] |
| DENG Xinpu,LU Qizhong,SUN Zhongkang.Digital Measuring for Phase Difference of Interferometer[J].Journal of National University of Defense Technology,2002,24(5):70-74[点击复制] |
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| 数字式相位差测量方法及精度分析 |
| 邓新蒲, 卢启中, 孙仲康 |
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(国防科技大学 电子科学与工程学院，湖南 长沙 410073)
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| 摘要: |
| 相位差变化率是最近提出的用于快速无源定位的观测量。该文研究相位差的高精度测量方法，提出了一种正交双通道数字式的相位差测量方法。通过对信号频谱的分析，计算了测量系统输出的信噪比，从而得出了相位差测量的理论精度，随后进行仿真分析验证了理论精度。理论分析和仿真实验证明，论文提出的方法可以实现高精度的相位差测量。 |
| 关键词: 无源定位 相位干涉仪 雷达信号处理 相位差测量 精度分析 |
| DOI： |
| 投稿日期：2002-04-08 |
| 基金项目:国家部委基金资助项目(2000J7.2.9KG0114) |
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| Digital Measuring for Phase Difference of Interferometer |
| DENG Xinpu, LU Qizhong, SUN Zhongkang |
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(College of Electronic Science and Engineering, National Univ. of Defense Technology, Changsha 410073,China)
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| Abstract: |
| By employing the new measurement information—rate of phase difference measured by two-element antenna array (interferometer), a passive location systems can find the position of enemy emitters more quickly with higher precision. The accuracy of phase difference is critical to this passive location system. A digital method for measuring it is presented. Spectral analysis on the signals in the measuring system is given, and the signal to noise rate is calculated, then the theoretical accuracy of phase difference is derived. The accuracy is also verified by the simulation results given in the paper. |
| Keywords: passive localization interferometer radar signal processing phase difference measuring accuracy analysis |
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