| 高动态GPS载波跟踪算法和环路控制策略研究 |
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| 引用本文： | 胡辉,孙函子,纪兆云.高动态GPS载波跟踪算法和环路控制策略研究[J].宇航学报,2011(8). |
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| 作者姓名： | 胡辉 孙函子 纪兆云 |
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| 作者单位： | 华东交通大学;中国电子科技集团第四十三研究所; |
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| 基金项目： | 江西省教育厅科学技术研究项目(GJJ10458); 江西省工业支撑计划(赣财教[2010]229) |
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| 摘 要： | 在接收信号有较高的多普勒频率及其一阶、二阶导数存在的情况下仍能正常工作的接收机被称为高动态接收机。设计高动态接收机的关键是设计参数与结构合理的载波跟踪算法。本文针对高动态环境下载波跟踪所遇到的问题,重点研究了频率牵引算法,FLL辅助PLL复合环算法及重要参数的设计,并提出了一种新的分阶段载波跟踪控制策略。本文采用GPS模拟器产生的高动态信号为实验源,基于Matlab平台建立系统模型,仿真结果表明:采用文中提出的载波跟踪算法的GPS接收机能在加速度100g,加速度变化率40g/s的动态指标下正常工作。
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| 关 键 词： | 高动态GPS接收机 频率牵引算法 FLL辅助PLL复合环 载波跟踪控制策略 |
Study on Algorithm and Control Strategies of GPS Carrier Tracking Loop Under High Dynamic Condition |
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| HU Hui,SUN Han-zi,JI Zhao-yun.Study on Algorithm and Control Strategies of GPS Carrier Tracking Loop Under High Dynamic Condition[J].Journal of Astronautics,2011(8). |
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| Authors: | HU Hui SUN Han-zi JI Zhao-yun |
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| Institution: | HU Hui1,SUN Han-zi2,JI Zhao-yun1 (1.School of Information Engineering,East China Jiaotong University,Nanchang 330013,China,2.The 43rd Research Institute of CETC,Hefei 230022,China) |
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| Abstract: | High dynamic receivers refer to the receivers that can work normally under the high Doppler frequency,first-phase derivative and second-phase derivative environment.The keys to design high dynamic receivers are design parameters and a structurally reasonable carrier tracking algorithm.Aiming at carrier tracking problems in the high dynamic environment,the research focuses on the frequency traction algorithm,principle and parameter of FLL-assisted PLL loop,and the control strategies for a new phase-carrier t... |
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| Keywords: | High dynamic GPS receiver Frequency traction algorithm FLL-assisted PLL loop Control strategies of phase-carrier tracking |
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