| 非线性跟踪-微分器在载波相位测速中的应用 |
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| 引用本文： | 汤勇刚,何晓峰,吴美平,胡小平. 非线性跟踪-微分器在载波相位测速中的应用[J]. 兵工自动化, 2007, 26(7): 51-53 |
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| 作者姓名： | 汤勇刚 何晓峰 吴美平 胡小平 |
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| 作者单位： | 国防科技大学,机电工程与自动化学院,湖南,长沙,410073;国防科技大学,机电工程与自动化学院,湖南,长沙,410073;国防科技大学,机电工程与自动化学院,湖南,长沙,410073;国防科技大学,机电工程与自动化学院,湖南,长沙,410073 |
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| 基金项目： | 高等学校博士学科点专项科研项目 |
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| 摘 要： | 针对传统微分器存在噪声放大和时延问题构造的非线性跟踪-微分器.通过离散的载波相位观测量提取载波相位率,并利用跟踪-微分器输出的二阶微分,采取预报的方法进行时延补偿.仿真及车载实验结果表明,该非线性跟踪-微分器能准确快速地跟踪微分信号,对噪声抑制作用良好,时延补偿效果明显,可提高速度测量精度.
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| 关 键 词： | 非线性跟踪-微分器 速度测量 载波相位 时延补偿 |
| 文章编号： | 1006-1576（2007）07-0050-03 |
| 收稿时间： | 2007-05-08 |
| 修稿时间： | 2007-05-082007-05-29 |
Application of Nonlinear Tracking-Differentiator in Carrier Phase Velocity Measurement |
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| TANG Yong-gang,HE Xiao-feng,WU Mei-ping,HU Xiao-ping. Application of Nonlinear Tracking-Differentiator in Carrier Phase Velocity Measurement[J]. Ordnance Industry Automation, 2007, 26(7): 51-53 |
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| Authors: | TANG Yong-gang HE Xiao-feng WU Mei-ping HU Xiao-ping |
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| Abstract: | To solve the problems of noise amplification and time delay in traditional differentiators, a nonlinear tracking-differentiator is designed. Carrier phase rate is acquired by taking derivatives of discrete carrier phase measurements with the time delay compensated using the second order derivative estimated by the outputs of differentiator. Simulation and experimental results show that the differentiator can track the differential signals rapidly and accurately, and does well in both noise depression and time delay compensation. It is proved that this method helps to improve the accuracy of velocity measurement. |
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| Keywords: | Nonlinear tracking-differentiator Velocity measurement Carrier phase Time delay compensation |
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