摘要
本文回顾了GPSP（Y）码使用和改进完善的过程，分析了P（Y）码在使用中存在P（Y）码直接捕获和信号结构的安全管理两个难题。针对这些问题提出一种新的军码信号工作体制，该体制可以避免P（Y）码直接捕获，简化系统安全使用管理，有效地为授权用户提供高精度、防欺骗、低成本的安全服务模式。
This paper recalls the use and improvement of GPS P（Y）-code, analyses two difficult questions which are the direct P（Y）-code acquisition and security management of signal structure. To resolve the above questions, a new military code signal operating system is presented, which can avoid the direct P（Y）-code acquisition, simplify system security management, and efficiently provide high accuracy, anti-spoofing and low cost safe service mode.
