【作者】 刘雪淋； 张磊；

【Author】 Liu Xuelin;Zhang Lei;Key Laboratory of Electronic and Information Technology in Satellite Navigation(Beijing Institute of Technology),Ministry of Education;Radar Research Laboratory of Beijing Institute of Technology;

【机构】 卫星导航电子信息技术教育部重点实验室(北京理工大学)； 北京理工大学信息与电子学院雷达技术研究所；

【摘要】 卫星导航在军事和民用领域具有重要而广泛的应用,它可为各类军民载体提供全天候、高精度的三维位置、速度、姿态和精密时间等信息。欺骗干扰因其逼真度高、隐蔽性强对卫星导航产生了极大的威胁。本文针对单通道接收机提出了基于前后时刻的欺骗信号识别算法,通过构造伪距双差检测量来进行欺骗信号识别。门限由噪声方差和检测概率决定;在门限与噪声方差确定后,虚警率与前后时间间隔有关,时间间隔越大虚警率越低。更多还原

【Abstract】 Satellite navigation has important and extensive applications in the military and civilian fields. It can provide all-weather, high-precision three-dimensional position, velocity, attitude and precise time information for all types of military and civilian carriers. Deception jamming has great threat to satellite navigation because of its high fidelity and concealment. In this paper, a single-channel receiver is proposed based on the deception signal identification algorithm before and after the time, by constructing pseudo-range double-difference detection amount for fraud signal recognition. The threshold is determined by the noise variance and detection probability; after the threshold and noise variance are determined, the false alarm rate is related to the time interval before and after, and the greater the time interval, the lower the false alarm rate.更多还原