摘要
为对抗坐标跳变和来波方向检测等反GPS欺骗手段,给出一种基于轨迹欺骗的GPS导航干扰方法。该方法综合转发式欺骗干扰和生成式欺骗干扰的特点,首先利用GPS接收机获得目标当前粗略位置,并从中提取伪距、伪距变化率、授时时刻、当前星历和信号强度等重要观测量,其次将观测量连同欺骗坐标一同送入时空参数模型,进而获得欺骗信号参数,生成高度拟真的欺骗信号并发射。验证结果表明,该方法可依托体积小、重量轻的软件无线电小型化系统实现,可在不同条件下实现对GPS接收机的有效欺骗。
In order to counter GPS deception methods such as coordinate jump and incoming direction detection,a GPS navigation interference method based on trajectory deception is presented.This method integrates the characteristics of forward-type deception jamming and generative deception jamming.First,the GPS receiver is used to obtain the current rough position of the target,and important observations,such as pseudorange,pseudorange change rate,timing,current ephemeris,and signal strength are extracted from it.Secondly,the observations are sent to the spatiotemporal parameter model together with the deceptive coordinates.Then the deceptive signal parameters are obtained,and a highly imaginary deceptive signal is generated and transmitted.The experimental verification results show that the method can be implemented with a small and lightweight software radio miniaturization system,and can effectively deceive the GPS receiver under different conditions.
作者
廖琪
郝金明
郑娜娥
刘伟平
LIAO Qi;HAO Jinming;ZHENG Nae;LIU Weiping(Information Engineering University, Zhengzhou 450001, China)
出处
《信息工程大学学报》
2020年第2期141-145,共5页
Journal of Information Engineering University
关键词
GPS
GPS卫星定位原理
导航信号
欺骗干扰
无人机
GPS
GPS satellite positioning principle
navigation signals
deception interference
drone
