多传感器导航中双天线基线欺骗干扰检测方法  

Spoofing interference detection method based on double antenna baseline in multi-sensor navigation

作　　者：傅金琳[1,2] 赵申卫 邓福建 王毅 FU Jinlin;ZHAO Shenwei;DENG Fujian;WANG Yi(Tianjin Navigation Instrument Research Institute,Tianjin 300131,China;Laboratory of Science and Technology on Marine Navigation and Control of China State Shipbuilding Corporation,Tianjin 300131,China)

机构地区：[1]天津航海仪器研究所,天津300131 [2]中国船舶集团公司航海保障技术实验室,天津300131

出　　处：《中国惯性技术学报》2022年第6期820-825,共6页Journal of Chinese Inertial Technology

基　　金：中国船舶集团应用创新行业特色研究项目(626010306)。

摘　　要：考虑卫星导航可能受欺骗干扰的风险,基于舰船多具有两套卫星导航天线和其他导航传感器的特点,提出一种多传感器导航中双天线基线欺骗干扰检测方法。采用共视卫星伪距进行双差,基于舰船上多传感器融合的导航信息与卫星星历信息计算卫星视距方向的单位矢量,根据伪距双差和卫星视距方向单位矢量得到基线长度。利用该计算基线长度与两天线实际基线长度构造欺骗干扰检测函数,对是否收到卫星欺骗干扰进行判决。为了验证提出算法的可行性,基于卫星信号模拟器和欺骗干扰源测试了所提算法对“突发型”欺骗干扰和“引诱型”欺骗干扰的检测能力。试验结果表明所提出算法能够有效检测出0.1 n mile的“突发型”欺骗干扰和0.2 kn的“引诱型”欺骗干扰。该方法无需更改接收机结构,只需修改导航信息融合设备软件,可为工程应用提供参考。Considering the risk that satellite navigation may be subject to spoofing interference, a spoofing interference detection method of double antenna baseline in multi-sensor navigation is proposed, based on the characteristics that there are two sets of satellite navigation antennas and other navigation sensors in the ships.The common view satellite pseudorange is used to calculate pseudorange double difference, and the navigation information fused by multi-sensors on the ship and satellite ephemeris information are used to calculate the unit vector of the satellite line of sight direction, then the baseline length is obtained according to the pseudorange double difference and the satellite line of sight direction unit vector. The calculated baseline length and the actual baseline length of the two antennas is used to construct spoofing interference detection function, which can determine whether under the spoofing attack. In order to verify the feasibility of the proposed method, the detection ability of the proposed method to ’burst’ spoofing interference and ’induced’ spoofing interference is tested by the satellite signal simulator and spoofing interference signal simulator. The test results show that the proposed method can effectively detect 0.1 n mile ’burst’ spoofing interference and 0.2 kn ’induced’ spoofing interference. The proposed method does not need to change the receive structure, only needs to modify the navigation fusion equipment software, which can offer reference for engineering applications.

关 键 词：双天线 基线 双差 欺骗干扰 

分 类 号：U666.1[交通运输工程—船舶及航道工程]