期刊文献+

卫星导航接收机三阶互调阻塞效应分析 被引量:8

Analysis of third-order intermodulation blocking effect for satellite navigation receiver
下载PDF
导出
摘要 为掌握卫星导航接收机电磁辐射效应规律,以某型导航接收机为试验对象,采用全电平辐照法对其进行单频连续波和带外双频电磁辐射三阶互调阻塞效应试验,通过试验验证了三阶互调阻塞效应模型的准确性。结果表明,受试导航接收机对工作频率频偏-4~18 MHz范围内的单频电磁辐射较为敏感,抗负频偏电磁干扰的能力远大于抗正频偏电磁干扰的能力;带外双频三阶互调敏感场强显著低于相同频点的单频阻塞干扰场强,最大差值可达46 dB;负频偏端三阶互调阻塞干扰因子峰值与正频偏端峰值之比高达20余倍,敏感频偏范围宽1倍以上。 In order to master the interference rule of satellite navigation receiver under electromagnetic radiation,a navigation receiver is taken as the experimental object,the full level irradiation method is used to carry out the electromagnetic radiation test of the single frequency continuous wave and the third-order intermodulation blocking effect test of the out-of-band dual-band electromagnetic radiation,the accuracy of the blocking effect model of third-order intermodulation is verified by experiments.The results show that the tested navigation receiver operating frequency in the range of-4~18 MHz offset is more sensitive to single-frequency electromagnetic radiation.The ability to resist electromagnetic interference in negative frequency offset is much greater than that in positive frequency offset.The field intensity of the third-order intermodulation on the dual-band is significantly lower than the single frequency blocking interference field at the same frequency point,and the maximum difference is up to 46 dB.The ratio of the peak value of the third-order intermodulation blocking interference factor at the negative frequency deviation end to the peak value of the positive frequency deviation end is up to more than 20 times,and the sensitive frequency deviation range is more than twice the width of that of the positive frequency deviation end.
作者 赵宏泽 魏光辉 杜雪 郑建拥 李媚 ZHAO Hongze;WEI Guanghui;DU Xue;ZHENG Jianyong;LI Mei(National Key Laboratory on Electromagnetic Environment Effects, Army Engineering University Shijiazhuang Campus, Shijiazhuang 050003, China)
出处 《系统工程与电子技术》 EI CSCD 北大核心 2022年第4期1336-1342,共7页 Systems Engineering and Electronics
基金 十三五装备预研项目电磁环境适应性试验与评估技术(41409030301)资助课题。
关键词 导航接收机 单频连续波 电磁辐射 阻塞效应 三阶互调 navigation receiver single frequency continuous wave electromagnetic radiation blocking effect third-order intermodulation
  • 相关文献

参考文献3

二级参考文献29

共引文献13

同被引文献29

引证文献8

二级引证文献4

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部