高动态GPS载波锁相环切换稳定性分析  

Stability Analysis of High Dynamic GPS Carrier Phase-locked Loop via Switching System

作　　者：富立[1] 王淼[1] 王玲玲[1] 

机构地区：[1]北京航空航天大学自动化科学与电气工程学院,北京100191

出　　处：《航空学报》2013年第11期2572-2579,共8页Acta Aeronautica et Astronautica Sinica

基　　金：国家自然科学基金(61071014)

摘　　要：为了平衡载波锁相环(PLL)的动态适应性和跟踪精度的要求,针对GPS三阶载波锁相环在混合动态情况下呈现的切换特征,建立了GPS三阶载波锁相环的线性切换模型。基于切换系统稳定性理论对所提出的模型进行了分析,并提出了基于线性切换系统稳定性判据的GPS三阶载波锁相环渐近稳定充分条件。利用软件接收机和混合动态轨迹验证了具有切换特征的GPS三阶载波锁相环的性能。实验结果表明:混合动态情况下,满足切换稳定性条件的GPS三阶载波锁相环具有较好的跟踪性能。To balance the requirements of carrier phase-locked loop （PLL） dynamic adaptability and tracking accuracy, the switching features of a GPS three-order carrier PLL in the hybrid dynamic cases are analyzed, and a GPS three-order carrier PLL switched linear model is presented. The proposed switching model is analyzed based on the switching system stability theory, and then the sufficient conditions for asymptotic stability of the GPS three-order carrier PLL tracking loop are derived based on the switching model and linear switching system stability criteria. Finally, a GPS software receiver and hybrid dy- namic trajectory are used to verify the performance of the GPS three-order carrier PLL with switching characteristics. The results show that the GPS three-order carrier PLL which meet switching stability conditions has better performance under hy- brid dynamic circumstances

关 键 词：载波跟踪 锁相环 环路滤波器 切换系统 稳定性 

分 类 号：V249.324[航空宇航科学与技术—飞行器设计] TN967[电子电信—信号与信息处理]