曾芳玲
国防科技大学电子对抗学院 ??合肥 ??230037
基金项目:国家自然科学基金(61272333)，国防科技重点实验室基金(9140C130502140C13068)
详细信息
作者简介:张海川：男，1991年生，博士生，研究方向为阵列信号处理、自适应波束形成、星基定位接收机系统
曾芳玲：女，1970年生，教授，主要研究方向为GPS信号对抗、无源定位、精确卫星时频同步等
通讯作者:张海川 zhanghai4258@163.com
中图分类号:TN965.5计量
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被引次数:0
出版历程
收稿日期:2018-04-18
修回日期:2018-11-21
网络出版日期:2018-12-06
刊出日期:2019-03-01
Performance Analysis of the Satellite-based Navigation Signal Acquisition under the Non-complete Spatial Overlapped Interference
Haichuan ZHANG,,Fangling ZENG
Institute of Electronic Warfare, National University of Defense Technology, Hefei 230037, China
Funds:The National Natural Science Foundation China (61272333), The National Defense Dcience and Technology Key Laboratory Fund (9140C130502140C13068)
摘要
摘要:该文针对星基定位接收机导航信号捕获的干扰问题，提出一种非完备空际间叠干扰信号模型。首先对提出的干扰模型以及非完备空际间叠引起的干扰裂变效应进行了阐述分析与推究证明，而后推导计算出了星基定位接收机输出信干噪比(SINR)与空际间叠长度的函数式，论证了两者函数单调性关系。仿真实验表明星基定位接收机输出信干噪比为空际间叠长度的单调增函数，短空际间叠长度干扰可抑制3维频码域相关峰突起，降消星基定位接收机捕获性能。
关键词:星基定位/
空际间叠干扰/
导航信号捕获/
3维频码域相关峰
Abstract:A non-complete spatial overlapped interference signal model is proposed based on the jamming research against satellite-based positioning receiver for the acquisition of navigation signal. Firstly, the interference model is introduced and analyzed, and the signal fission effect induced by non-complete spatial overlapped interference is demonstrated. Then, the relationship between SINR of satellite-based positioning receiver and spatial overlapped length is derived, and the monotonic relationship of them is deduced. Simulation results suggest that SINR of satellite-based positioning receiver is the monotonically increasing function of spatial overlapped length, and the short-spatial-overlapped interference can restrain the peak amplitude of three dimensional frequency and coded domain correlation, degrading the performance of acquisition of satellite-based positioning receiver.
Key words:Satellite-based positioning/
Spatial overlapped interference/
Navigation signal acquisition/
Three dimensional frequency and coded domain correlation peak
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