北斗 B1 信号干扰快速检测方法研究

中国民航大学学报 ›› 2021, Vol. 39 ›› Issue (3): 10-15.

北斗 B1 信号干扰快速检测方法研究

刘瑞华，张硕

（中国民航大学电子信息与自动化学院，天津 300300）

收稿日期:2020-11-06 修回日期:2020-11-06 接受日期:2020-09-09 出版日期:2021-06-25 发布日期:2021-11-28
作者简介:刘瑞华（1965—），男，陕西西安人，教授，博士，研究方向为卫星导航、惯性导航和组合导航.
基金资助:
国家重点基础研究发展计划项目（2016YFB0502402）

Fast detection method of signal interference on Beidou B1 signal

LIU Ruihua, ZHANG Shuo

（College of Electronic Information and Automation, CAUC, Tianjin 300300, China）

Received:2020-11-06 Revised:2020-11-06 Accepted:2020-09-09 Online:2021-06-25 Published:2021-11-28

摘要/Abstract

摘要： 干扰检测是干扰监测的基础，可有效确保北斗 B1 信号的服务质量。由于传统的连续均值剔除算法检测性能较差，而前向连续均值剔除（FCME，forward consecutive mean excision）算法和双门限 FCME 算法运算量大，难以实现快速干扰检测，因此，提出了一种改进的 FCME 算法。首先根据快速傅里叶变换运算特点减少干扰检测样本点，然后利用差分算法代替 FCME 中的排序算法计算初始门限，降低算法的复杂度，最后通过实测数据进行算法验证。结果表明：改进的检测算法可有效降低运算复杂度，且对干扰信号有较好的检测性能。

关键词: 干扰检测, FCME, 差分算法, 复杂度, 检测性能

Abstract: Interference detection is the basis of interference monitoring, which can effectively ensure the quality of Beidou B1 signal. Due to the poor detection performance of traditional CME (consecutive mean excision) algorithm, large amount of computation work of FCME(forward consecutive mean excision) and double threshold FCME algorithm makes it difficult to achieve fast interference detection. Therefore, an improved algorithm based on FCME is proposed. Firstly, according to the operational characteristics of FFT (fast Fourier transform), the interference detection sample points are reduced; then the differential algorithm is used to replace the sorting algorithm in FCME and calculate the initial threshold, so as to reduce the complexity of the algorithm; finally, the algorithm is verified by the measured data, and results show that the improved detection algorithm can effectively reduce the computational complexity, and has good detection performance for interference signals.

Key words: interference detection, forward consecutive mean excision(FCME), differential algorithm, complexity, detection performance

中图分类号:

刘瑞华, 张硕. 北斗 B1 信号干扰快速检测方法研究 [J]. 中国民航大学学报, 2021, 39(3): 10-15.

LIU Ruihua, ZHANG Shuo. Fast detection method of signal interference on Beidou B1 signal [J]. Journal of Civil Aviation University of China, 2021, 39(3): 10-15.

参考文献 16

[1]	白燕. GNSS 空间信号干扰评估及抑制方法研究[D]. 北京: 中国科学院大学, 2014.
[2]	孔月明. 北斗导航电文数据处理关键技术研究[D]. 天津: 中国民航大学, 2017.
[3]	HENTTU P, AROMAA S. Consecutive mean excision algorithm[C]//IEEESeventh International Symposium on Spread Spectrum Techniques andApplications, Prague, Czech Republic, September 2-5, 2002: 450-454.
[4]	TOM K F. Automated energy detection algorithm based on consecutivemean excision[R]. United States: US Army Research Laboratory Aberdeen Proving Ground, 2018.
[5]	SAARNISAARI H, HENTTU P. Impulse detection and rejection methods for radio systems[C]//IEEE Military Communications Conference,Boston, MA, October 13-16, 2003: 1126-1131.
[6]	ABDULLAHI H, ONUMANYI A J, ZUBAIR S, et al. Optimized forwardconsecutive mean excision algorithm for adaptive threshold estimationinthe energy detector[C]//ICGET Amsterdam, Netherlands, July 10-12, 2018: 92-96.
[7]	VARTIAINEN J, LEHTOMAKI J T, SAARNISAARI H. Doubule threshold based narrowband signal extraction[C]//2005 IEEE 61st Vehicular Technology Conference, May 30-June 1, 2005, Stockholm, Sweden.IEEE, 2005: 1288-1292.
[8]	LI D, XU K. Research on bandwidth narrowband interference suppression based on improved double -threshold FCME algorithm [C]//2017International Conference on Computer Technology, Electronics andCommunication (ICCTEC), Dalian, Liaoning, 2017: 406-411.
[9]	RTCA. Assessment of radio frequency interference relevant to the GNSSL1 frequency band: Do-235B[S]. Italy: Publication Office of the European Union, 2008.
[10]	JOHANNESSEN R, CALE S J, ASBURY M J A. Potential interferencsources to GPS and solutions appropriate for applications to civil avation[J]. IEEE AES Magazine, 1990, 5(1):3-9., 杨俊, 明德祥, 等. 卫星导航终端复杂电磁环境仿真测试系统理论与应用[M]. 北京: 科学出版社, 2018.
[12]	樊明, 魏泽鼎, 郭艺. DSSS 频域干扰检测方法研究[J]. 现代电子技术, 2007, 30(13): 15-17.
[13]	严蔚敏, 吴伟民. 数据结构[M]. 北京: 清华大学出版社, 2012.
[14]	黄禹. DSSS 系统的干扰检测技术研究与实现[D]. 西安: 西安电子科技大学, 2014.
[15]	中国卫星导航系统管理办公室. 北斗卫星导航系统空间信号接口控制文件 3.0 版[G]. 北京: 中国卫星导航系统管理办公室, 2019.
[16]	刘瑞华, 梁欣萌, 王晶. 北斗 B1 信号干扰检测方法研究[J]. 航天控制, 2020, 38(2): 25-30, 37.