零中频架构导航接收机中镜像干扰抑制方法

中国民航大学学报 ›› 2025, Vol. 43 ›› Issue (6): 15-23.

零中频架构导航接收机中镜像干扰抑制方法

WANG Wenyi 1 , QIAO Mengtian1, 2

1. 中国民航大学电子信息与自动化学院，天津 300300； 2. 中国特种飞行器研究所，湖北荆门

448000

收稿日期:2024-01-26 修回日期:2024-05-11 出版日期:2025-12-20 发布日期:2026-01-10
作者简介:王文益（1980— ），男，湖北襄阳人，教授，博士，研究方向为卫星导航抗干扰、自适应信号处理.
基金资助:
天津市研究生科研创新项目(2021YJS023)

An image interference suppression method for zero-IF architecture navigation

receivers

1. College of Electronic Information and Automation, CAUC, Tianjin 300300, China;

2. China Special Aircraft Research Institute, Jingmen 448000, Hubei, China

Received:2024-01-26 Revised:2024-05-11 Online:2025-12-20 Published:2026-01-10

摘要/Abstract

摘要：

针对零中频架构导航接收机中存在的镜像干扰问题，本文提出一种基于复解析带通滤波器的抑制方法。该

方法通过优化射频前端参数实现镜像干扰与导航信号的频谱分离，并设计复解析带通滤波器以抑制镜像

干扰。首先，本文从理论层面论证了信号正交混频过程中的同向/正交（I/Q，in-phase/quadrature-phase）失配

是导致镜像干扰产生的根本原因；随后，评估了在空时最小功率抗干扰算法下镜像干扰对系统性能的影

响。在此基础上，本文采用所提出的复解析带通滤波器对镜像干扰进行抑制，再结合空时最小功率抗干扰算

法进行联合处理。通过仿真与实测数据验证表明，本文所提方法能够有效提升导航接收机的抗干扰性能。

关键词:

镜像干扰, 抗干扰, I/Q 失配, 导航接收机

Abstract:

To address the image interference issue in zero intermediate frequency (zero-IF) architecture navigation receivers,

this paper proposes a suppression method based on a complex analytic bandpass filter. The proposed method is

used to optimize the parameters of the receiver′s radio frequency (RF) front-end to achieve spectral separation

between the image interference and the navigation signal, followed by the design of a complex analytic bandpass

filter to suppress image interference. First, this paper theoretically demonstrates that in-phase/quadrature-phase

(I/Q) mismatch during quadrature downconversion is the fundamental cause of image interference. Subsequently,

the impact of image interference on system performance is evaluated under the space-time minimum power antijamming algorithm. Based on this analysis, the proposed complex analytic bandpass filter is employed to suppress

image interference, followed by joint processing with the space-time minimum power anti-jamming algorithm.

Simulation and measured results validate that the proposed method effectively enhances the anti-jamming performance of the navigation receiver.

Key words:

image interference, anti-jamming, I/Q mismatch, navigation receiver

中图分类号:

王文益, 乔梦甜, .

零中频架构导航接收机中镜像干扰抑制方法

[J]. 中国民航大学学报, 2025, 43(6): 15-23.

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