摘要
介绍了GPS采用的伪随机噪声编码、直接序列扩频等抗干扰功能,分析了GPS P(Y)码和C/A码抗干扰所需干信比。根据GPS卫星信号到达地面的信号强度,给出了干扰设备发射通道和GPS有源天线的概要设计,并对干扰设备发射通道滤波器的阻带抑制进行了计算,综合分析了干扰设备与导航GPS的电磁兼容性。
The anti-jamming function of GPS with pseudorandom noise code, direct sequence spread spectrum is described, and the needed jamming-to-signal ratio for anti-jamming of GPS P （Y） code and C/A code is analyzed. According to intensity of signal arrived to the ground from GPS satellite, the general design of jamming equipment transmission channels and GPS active antenna are presented, and the stop-band suppression of filter on jamming equipment transmission channels is calculated, a comprehensive analysis of system electromagnetic compatibility between jamming equipment and navigation GPS is given.
出处
《电子信息对抗技术》
2011年第5期56-58,63,共4页
Electronic Information Warfare Technology
关键词
无人机
GPS
有源天线
干信比
电磁兼容
unmanned aerial vehicle（UAV）
GPS
active antenna
jam-to-signal ratio
electromagnetic compatibility
