GPS接收机码/载波跟踪环技术及其抗干扰能力分析

为了提高GPS接收机的抗干扰能力，美国采取了一系列抗干扰技术措施，其中码／载波跟踪环技术是现代数字GPS接收机普遍采用的技术。本文主要通过分析数字GPS接收机的码／载波跟踪环技术，根据经验法则确定的载波跟踪环（PLL）与码跟踪延迟锁相环（DLL）门限，对采用码／载波跟踪环技术的GPS接收机的抗干扰能力进行分析。

Analysis of DLL/PLL of GPS Receiver and Its Anti-jamming Capability

In order to improve anti-jamming capability of GPS receiver,US take a series of anti-jamming measurements.DLL/PLL is the general used technology.The DLL/PLL of GPS receiver is mainly analyzed,and according to threshold of DLL/PLL defined by empirical rule,the anti-jamming capability of GPS receiver,which takes DLL/PLL technology,is analyzed also.