摘要
卫星导航信号为扩频信号，比接收机热噪声低20～30 dB，极易受到干扰，因此，研究卫星导航系统接收机的抗干扰能力显得极为重要。特征空间算法是一种有效的自适应抗干扰算法，目前广泛应用于抗干扰接收机中。首先建立了阵列信号基本模型,然后介绍了阵列信号特征分解原理，对其性能进行分析,并由计算机仿真证明了该算法的有效性。
The satellite signal is spread-spectrum signal,and the power is 20~30 dB lower than noise ofreceiver,it is jammed easily.Study ofthe the jamming ability of satellite navigation receiver is important.Eigen-space decomposition algorithms is an effective adaptive anti-jamming algorithm.A basic model for array signal is built first.The theorem of array signal eigen-space decomposition is introduced.The performances of algorithms are analyzed.At last,the validity of algorithms is proved by the computer simulation.
出处
《现代电子技术》
2008年第11期10-11,14,共3页
Modern Electronics Technique
基金
军队科研基金资助项目
