面向旋转载体的卫星导航天线相位缠绕问题与分析  

Problem and Analysis of Phase Wind-Up of Satellite Navigation Antennas for Rotating Carriers

作　　者：王俊[1] 瞿辰旭 董先哲 Wang Jun;Qu Chenxu;Dong Xianzhe(School of Electronic and Information Engineering,Beijing Jiaotong University,Beijing 100044,China)

机构地区：[1]北京交通大学电子信息工程学院,北京100044

出　　处：《航空兵器》2024年第3期66-71,共6页Aero Weaponry

基　　金：航空科学基金项目(202000010M5001)。

摘　　要：为解决卫星导航接收机在小口径旋转导弹应用中无法实现载波连续跟踪问题,本文通过分析小口径旋转导弹接收的卫星导航信号特点,研究载体旋转对接收信号幅度和载波相移的影响,建立载体旋转状态下接收信号的幅度变化模型和载波相移模型,提出了天线相位缠绕会引入额外的载波相移并改进原有的系统模型。依据信号模型进行系统仿真,并搭建了试验环境以证明相位缠绕对载波相位测量引入的误差不可忽略。试验结果表明,本文所改进的相位缠绕系统模型与实测数据均方根误差为11.13°,为卫星导航接收机实现载波跟踪进行精确的相位补偿提供理论依据,进而为提高高速旋转载体卫星导航性能提供理论支撑。This paper analyzes the characteristics of satellite navigation signals received by the high-speed rotating carrier in order to solve the problems existing in the application of satellite navigation receiver in the high-speed rotating carrier,studies the influence of rotation on the received signal amplitude and carrier phase shift.This paper also establishes the received signal amplitude change model and carrier phase shift model under the condition of body rotation.The antenna phase wind-up is proposed to introduce additional carrier phase shift and improve the original system model.Based on the signal model,the system simulation is carried out,and the experimental environment is built for testing,which verifies the necessity and correctness of the system model with antenna phase wind-up,and provides theoretical support for improving the defensive and guiding performance of small-caliber rotating missile.

关 键 词：旋转载体 卫星导航 幅度变化模型 载波相移模型 相位缠绕 导弹 

分 类 号：TJ760[兵器科学与技术—武器系统与运用工程]