| 高动态条件下改进的EKF载波跟踪环路 |
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| 引用本文： | 李思超,李金海,孙金海,汪峰,阎跃鹏.高动态条件下改进的EKF载波跟踪环路[J].哈尔滨工程大学学报,2011,32(11):1509-1513. |
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| 作者姓名： | 李思超 李金海 孙金海 汪峰 阎跃鹏 |
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| 作者单位： | 中国科学院微电子研究所,北京,100029 |
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| 基金项目： | 国家863计划资助项目(2009AA12Z314) |
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| 摘 要： | 针对高动态环境下扩展Kalman滤波器跟踪环路的性能,分析了该跟踪环路的带宽特性,建立了环路带宽的数学模型.在此基础上,提出了一种改进的扩展Kalman滤波器跟踪环路.在不同条件下对2种算法的环路带宽特性做了分析比较,结果表明改进算法的环路带宽比NASA提出的常规算法显著减小.在相对加加速度为100 g/s的高动态条件...
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| 关 键 词： | 高动态 扩展Kalman滤波器 环路带宽 跟踪灵敏度 失锁概率 |
A modified carrier tracking loop using an extended Kalman filter in high dynamic conditions |
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| LI Sichao,LI Jinhai,SUN Jinhai,WANG Feng,YAN Yuepeng.A modified carrier tracking loop using an extended Kalman filter in high dynamic conditions[J].Journal of Harbin Engineering University,2011,32(11):1509-1513. |
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| Authors: | LI Sichao LI Jinhai SUN Jinhai WANG Feng YAN Yuepeng |
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| Affiliation: | LI Sichao,LI Jinhai,SUN Jinhai,WANG Feng,YAN Yuepeng(Institute of Microelectronics of Chinese Academy of Sciences,Beijing 100029,China) |
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| Abstract: | The bandwidth characteristics of an extended Kalman filter were analyzed in order to study the filter's performance in tracking high dynamic signals,and a mathematic model was also established.According to the analysis,a modified tracking loop was proposed.The bandwidth characteristics of both algorithms were analyzed under various conditions,and the results show that the bandwidth of the modified method is much smaller than that of routine method from NASA.Both algorithms were simulated with high dynamic g... |
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| Keywords: | high dynamic conditions extended Kalman filter loop bandwidth tracking sensitivity probability of loss-of-lock |
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