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
张伟 1彭梓洋 2马竞羽 1贺智勇1
作者信息
- 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
- 折叠
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.
Abstract
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Key words
Global Navigation Satellite Systems/jammer/space frequency adaptive processing/carrier phase引用本文复制引用
基金项目
河南省科技攻关计划(212102210570)
河南省科学院基本科研项目(230607062)
出版年
2024
国家科技期刊平台
NSTL
万方数据