摘要
介绍了GPS导航系统的基本原理及其干扰和反干扰措施。以INS/GPS组合导航为例,研究了干扰距离对其干扰效果的影响。分析了影响干扰距离的因素并研究了各因素对干扰距离影响的大小,指出有效干扰范围不仅受干扰功率的影响,还受到干扰机和接收机天线方向增益的影响及地表曲率决定的视在距离的限制。讨论了如何对未来具有强抗干扰能力GPS接收机进行有效干扰的干扰机配置方案。
Theory of global positioning system and its jamming/anti -jamming technology are introduced. The influence of jamming effect by the jamming range of the INS/GPS combined navigation system is investigated. The factors related to the jamming distance and their forces are analyzed. And the jamming distance not only affected by the jamming power,but also influenced by the antenna gain of jammers and receiver,and limited by the geographical viewing distance. The deploy scheme of GPS jamming system is proposed too.
出处
《现代电子技术》
2006年第3期19-21,24,共4页
Modern Electronics Technique
关键词
全球定位系统
扩频调制
电子干扰
反干扰措施
global positioning system
spread spectrum modulation
electronic jamming
anti - j anming technology
