空频抗干扰对GNSS载波相位测量的影响  

Effect of space-frequency adaptive processing on carrier phase measurements of Global Navigation Satellite Systems

作　　者：张伟[1] 彭梓洋 马竞羽 贺智勇 ZHANG Wei;PENG Ziyang;MA Jingyu;HE Zhiyong(Henan Academy of Sciences Institute of Applied Physics Co.,Ltd,Zhengzhou Henan 450008,China;School of Astronautics,Northwestern Polytechnical University,Xi'an Shaanxi 710129,China)

机构地区：[1]河南省科学院应用物理研究所有限公司,河南郑州450008 [2]西北工业大学航天学院,陕西西安710129

出　　处：《太赫兹科学与电子信息学报》2024年第3期285-289,共5页Journal of Terahertz Science and Electronic Information Technology

基　　金：河南省科技攻关项目资助(212102210570);河南省科学院基本科研项目资助(230607062)。

摘　　要：对于全球导航卫星系统(GNSS)的抗干扰,最有效的是采用自适应天线阵技术,但这种抗干扰处理会引入与信号入射方向相关的载波相位测量偏差,限制了其在高精确度测量领域的应用。为减小抗干扰处理的偏差,引入测量偏差及其分析方法,建立仿真模型,并搭建软件接收机进行实验。结果表明,在不增加额外约束的条件下,采用空频最小方差无畸变响应算法实现空频抗干扰处理器,不会引入载波相位测量偏差,非常适用于对抗干扰性能和测量精确度均有苛刻要求的场合。Adaptive antenna array technology is the most effective method for anti-interference of Global Navigation Satellite Systems(GNSS).However,this anti-interference processing generates carrier phase measurement bias related to the direction of signal incidence,which limits the effective application in high-precision measurement.In order to reduce the bias of anti-interference processing,an analysis method of introducing measurement bias is proposed,a corresponding model is established,and a software receiver is built for simulation experiments.The results show that without adding additional constraints,adopting the space frequency minimum variance distortionless response algorithm to achieve a space frequency anti-interference processor would not introduce carrier phase measurement bias,making it very suitable for applications in fields with strict requirements on anti-interference performance and measurement accuracy.

关 键 词：全球导航卫星系统 抗干扰 空频自适应处理 载波相位 

分 类 号：TN967.1[电子电信—信号与信息处理]