摘要
在全球导航卫星系统(GNSS)RF干扰检测中,针对能量检测法易受噪声影响的弱点,利用调制信号周期性平稳的特性,提出利用循环谱检测法检测GNSS RF干扰的方案.利用MATLAB软件平台对以上两种干扰检测方法进行仿真分析,结果表明:循环谱法计算量大,但对各类干扰的检测性能要优于能量法,前者对各类干扰信号的检测性能依赖于平滑窗选取以及用于检测的数据长度。
Energetic detection is vulnerable to noise in the radio frequency Interference detection of Global Navigation Satellite System（GNSS）.To deal with this problem,a cyclostationary spectrum detection method based on the cyclostationary of modulated signal is introduced in this paper.A comparison between the two methods using the MATLAB software platform is implemented.It shows that the performance of cyclostationary spectrum detection method is superior to energetic detection since it depends on the size of smoothing window and the length of the data.However,the only disadvantage of the former is the large amount of calculation.
出处
《全球定位系统》
CSCD
2015年第6期52-57,共6页
Gnss World of China
关键词
循环谱
GNSS
干扰检测
Cyclostationary spectrum
GNSS
Interference detection
