摘要
为减小抗干扰接收机硬件实现难度,深入研究单天线卫星导航抗干扰相关接收机的性能,并详细分析其频域响应、信干噪比损耗和相关输出函数。分析表明,抗干扰最优接收机与相关接收机信干噪比损耗随着干扰带宽和干扰强度的增加而增大,随干扰频率与中心频率偏差和噪声带宽的增加而减小。此外,干扰将引起抗干扰接收机匹配与相关输出主峰降低和旁瓣抬高,从而影响接收机捕获、跟踪和多径抑制性能。研究结果将为卫星导航抗干扰接收机的优化设计提供依据。
In order to reduce the hardware realization difficulty,the GNSS(global navigation satellite system)sole antenna anti-jamming correlation receivers were studied in partial-band interferences circumvent.Their frequency responses,SINR(signal-to-interference-noise ratio)losses and correlation output functions were analyzed.It is shown that the SINR losses of anti-jamming optimal receivers and correlation receivers will increase with the bandwidth and power increase of interferences.The SINR losses will decrease with the bandwidth increase of noise and the frequency difference will increase between interferences and signals.Moreover,the match and correlation output main lobes will be depressed and the side lobes will be raised by jammers so as to affect the acquisition,track and multipath mitigation performance of anti-jamming receivers.Analysis results will provide the design basis for the GNSS anti-jamming receivers.
作者
李峥嵘
陈华明
王飞雪
王嘉
LI Zhengrong;CHEN Huaming;WANG Feixue;WANG Jia(College of Electronic Science, National University of Defense Technology, Changsha 410073 , China;Training Department, National University of Defense Technology, Changsha 410073 , China)
出处
《国防科技大学学报》
EI
CAS
CSCD
北大核心
2017年第5期32-37,共6页
Journal of National University of Defense Technology
基金
国家自然科学基金资助项目(61403413)
关键词
全球导航卫星系统
部分频带干扰
抗干扰最优接收机
抗干扰相关接收机
global navigation satellite system
partial-band interferences
anti-jamming optimal receiver
anti-jamming correlation receiver
