摘要
GPS M码信号采用二进制偏移载波(BOC)调制,实现了频谱分离,带宽更大,原有针对C/A码、P码的干扰参数设置无法对其进行有效干扰。文中采用可形成较大带宽的噪声调频干扰样式,结合GPS软件接收机码跟踪环路工作原理,以接收机码跟踪误差为干扰评价指标,对特定干信比下的干扰频偏和干扰带宽进行参数优化,通过综合比较得出针对M码信号的噪声调频干扰高效干扰参数设置。
The GPS M-code signals have a separated spectrum and wider bandwidth because of the BOC moudulation. So,the traditional jamming parameter settings to C/A code and P code are invalid to M code. In this paper,the noise FM jamming is applied to interfere M code because of the wider bandwith.Combined with the operational principle of receiver code tracking loop,the paper used code tracking error as the jamming effect evaluation index to optimize jamming frequency offset and bandwith under given JSR. The efficient jamming parameter settings of noise FM jamming to M-code signals are optimized by comparing the simulation results.
出处
《信息技术》
2017年第8期41-45,共5页
Information Technology
基金
安徽省自然科学基金(1408085MF129)
关键词
BOC
噪声调频干扰
干扰频偏
码跟踪误差
BOC
noise FM jamming
jamming frequency offset
code tracking error
