| 基于DSP的单频激光实时信号解调软硬件研究 |
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| 引用本文： | 王坚,杨军.基于DSP的单频激光实时信号解调软硬件研究[J].黑龙江水专学报,2011,2(1):77-82. |
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| 作者姓名： | 王坚 杨军 |
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| 作者单位： | 哈尔滨工程大学,理学院,哈尔滨,150001 |
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| 基金项目： | 国家自然科学基金项目，黑龙江省自然科学基金重点项目，中央高校基础科研业务费专项基金项目 |
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| 摘 要： | 提出一种基于DSP(Digital Signal Processor)的干涉仪实时信号解调方法,可实现对干涉仪信号的非线性误差校正和实时解调.基于DSP构建了高速数据处理系统,基于FPGA构建了高速数据采集系统,采用经过优化的椭圆拟合和细分查表法,实现了 1 MHz采样率的干涉信号实时解调,完成了2π相位的4 096细分.
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| 关 键 词： | 干涉信号解调 高速数据处理 非线性误差 |
Research of a DSP-based Real-time Demodulation Method of One-frequency Laser Interferometer |
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| WANG Jian,YANG Jun.Research of a DSP-based Real-time Demodulation Method of One-frequency Laser Interferometer[J].Journal of Heilongjiang Hydraulic Engineering College,2011,2(1):77-82. |
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| Authors: | WANG Jian YANG Jun |
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| Affiliation: | (College of Science,Harbin Engineering University,Harbin 150001,China) |
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| Abstract: | A DSP-based real-time demodulation method of interferometer is proposed,which can realize nonlinearity error and real-time demodulation for interferometer.A high-speed data-processing system mainly consists of DSP,A high-speed data acquisition system mainly consists of FPGA.Real-time demodulation is implemented by optimal ellipse fitting method and look-up table method at 1 MHz sampling rate,signal is fractionized into 4096. |
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| Keywords: | DSP |
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