河北师范大学物理学院;河北师范大学计算机与网络空间安全学院;
针对传统的基于阵列天线全球导航卫星系统(Global Navigation Satellite System, GNSS)欺骗干扰检测算法的局限性以及模糊度求解问题的复杂性,提出一种4天线GNSS欺骗干扰测向方法,能够在不受周跳影响下动态求解模糊度,实现欺骗干扰检测与测量。算法利用处于不同平面内的4条天线组成六基线并构建了4个非同一平面三角天线阵,在不同三角天线阵中,通过固定基线以及信号传播空间特性进行信号实际波达方向(Direction of Arrival, DOA)解算。根据信号到达不同三角天线阵理论方向一致性,对模糊度实施动态解算。通过对比信号的实际DOA与接收机根据星历信息计算并输出的理论DOA,根据二者残差平方和(Sum of Squared Errors, SSE)是否超过预设门限来判断信号是否受到欺骗。在实际观测过程中,各个接收机之间存在开机随机钟差,各天线、电缆长度不均以及天线相位中心不稳定问题,导致载波相位单差观测值存在偏差,对这些误差修正方法进行推导,通过实验进行验证,欺骗检测效率可达100%。
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下载次数 | 被引频次 | 阅读次数 |
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基本信息:
DOI:
中图分类号:TN967.1
引用信息:
[1]杜云龙,赵骁骢,冯冀宁.4天线GNSS欺骗干扰测向算法[J].无线电工程,2025,55(02):373-384.
基金信息:
中央引导地方科技发展资金项目(236Z0102G)~~