系统工程与电子技术 ›› 2021, Vol. 43 ›› Issue (9): 2588-2593.doi: 10.12305/j.issn.1001-506X.2021.09.27

• 制导、导航与控制 • 上一篇    下一篇

导航接收机带外电磁干扰的效应规律及预测方法研究

张庆龙, 王玉明, 程二威, 陈亚洲*, 马立云   

  1. 陆军工程大学石家庄校区电磁环境效应国防重点实验室, 河北 石家庄 050003
  • 收稿日期:2020-09-25 出版日期:2021-08-20 发布日期:2021-08-26
  • 通讯作者: 陈亚洲
  • 作者简介:张庆龙(1987—), 男, 博士研究生, 主要研究方向为电磁环境效应与防护研究|王玉明(1980—), 女, 讲师, 博士, 主要研究方向为电磁兼容与电磁防护|程二威(1983—), 男, 副教授, 博士, 主要研究方向为电磁环境模拟与测试技术|陈亚洲(1975—), 男, 教授, 博士, 主要研究方向为强电磁环境模拟、电磁环境效应与防护|马立云(1984—), 女, 讲师, 硕士, 主要研究方向为电磁兼容与电磁防护
  • 基金资助:
    十三五装备预研项目(41409010501);国家部委科研资助项目(LJ20182A040327)

Investigation on the effect law and prediction method of out-of-band electromagnetic interference in navigation receiver

Qinglong ZHANG, Yuming WANG, Erwei CHENG, Yazhou CHEN*, Liyun MA   

  1. National Key Laboratory on Electromagnetic Environment Effects, Shijiazhuang Campus of Army Engineering University, Shijiazhuang 050003, China
  • Received:2020-09-25 Online:2021-08-20 Published:2021-08-26
  • Contact: Yazhou CHEN

摘要:

针对复杂电磁环境中无人装备的卫星导航定位功能易受到电磁干扰影响的问题, 提出带外电磁干扰的效应规律和带外双频干扰的预测模型。首先, 从大信号阻塞干扰的机理出发, 推导得到带外双频电磁干扰下导航接收机卫星跟踪丢失的预测模型。其次, 开展单源电磁干扰的效应试验, 得到不同卫星的电磁敏感阈值曲线, 并对除主敏感频带外其他敏感频带的产生机理进行分析。最后, 开展了双频电磁干扰的效应试验, 通过试验数据验证了该模型的预测误差在±2 dB以内, 为无人装备在带外电磁干扰预测方面提供了有效方法。

关键词: 卫星导航, 带外双频, 电磁敏感阈值, 预测方法

Abstract:

Aiming at the problem the satellite navigation's positioning functions of unmanned equipment in complex electromagnetic environments are susceptible to electromagnetic interference (EMI), the effect of out-of-band EMI and the prediction model of out-of-band dual-frequency interference are proposed. Firstly, a prediction model of navigation receiver satellite tracking loss under dual-frequency EMI is derived, which is based on the mechanism of large-signal blocking interference. Secondly, through the single-source EMI effect experiment, the electromagnetic sensitivity threshold curve of different satellites was obtained, and the generation mechanism of other sensitive frequency bands except the main sensitive frequency band was analyzed. Finally, a dual-frequency EMI effect experiment was carried out, and the experimental data verified that the prediction error of the model was less than 2 dB, which provides a method for unmanned equipment to predict out-of-band EMI.

Key words: satellite navigation, out-of-band dual-frequency, electromagnetic sensitivity threshold, prediction method

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