A Fast Anti-Interference Detection Method for Loran-C Signal

doi:10.7652/xjtuxb201310016

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A Fast Anti-Interference Detection Method for Loran-C Signal

更新时间：2025-07-09

- A Fast Anti-Interference Detection Method for Loran-C Signal
- Vol. 47, Issue 10, Pages: 91-96(2013)
- 作者机构：
  
  1. 中国科学院国家授时中心,西安,710600
  2. 中国科学院大学,北京,100039
  3. 中国科学院精密导航定位与定时技术重点实验室,西安,710600
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb201310016
  CLC： TN966+.4
- Online First：10 October 2013，
  
  Published：2013
- 稿件说明：
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A Fast Anti-Interference Detection Method for Loran-C Signal[J]. 2013, 47(10): 91-96.
DOI：

A Fast Anti-Interference Detection Method for Loran-C Signal[J]. 2013, 47(10): 91-96. DOI： 10.7652/xjtuxb201310016.

摘要

针对罗兰-C导航定时接收机传统信号检测时间长、抗干扰性能差的缺点

提出了一种罗兰-C信号抗干扰快速检测方法。该方法首先将经过AD采样的罗兰-C信号与本地产生的载波信号进行混频得到同向/正交两个支路信号

通过低通滤波器滤除高频成分后进行平方相加消除本地载波与罗兰-C信号载波之间的相位差

然后将得到的罗兰-C信号包络进行延迟相乘累积得到相关累积峰

基于相关峰的分析判决即可实现罗兰-C信号的检测。理论分析与实验结果表明:该方法的信号检测时间少于200 ms

比传统方法提高了数千倍; 抗窄带干扰性能优于-20 dB

比传统方法提高了10 dB

解决了强窄带干扰环境下罗兰-C信号的快速检测问题。

Abstract

A fast anti-interference detection method for Loran-C signal is proposed to improve the disadvantages of Loran-C navigation and timing receiver

such as long time in signal detection and poor performance in anti-interference. The method obtains two in-phase/quadrature(I/Q)branch signals through mixing the Loran-C signal that has been AD sampled and the local carrier signal. Then the phase difference between the local carrier and the Loran-C signal is eliminated by filtering out the high frequency components when the I/Q signals pass through a low-pass filter and calculating the sum of squares. Finally

delay multiplications on the signal envelopes of the obtained Loran-C signals are performed and accumulated to get the correlation accumulation peak. The detection of the Loran-C signal is then realized based on the analysis and judgment on the correlation peak. The theoretical analysis and experiment results show that the detection time of the proposed method is less than 200 ms

which is thousands of times shorter than the traditional method is

and the performance of anti-narrow band interference is superior to -20 dB

improving 10 dB compared with the traditional method. It seems that the fast detection problem of Loran-C signal in the intensive narrow-band interference environment is solved.

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references

李实锋, 王玉林, 华宇. 罗兰-C数据解调与解码技术研究 [J]. 仪器仪表学报, 2012, 33(6): 1407-1413.

LI Shifeng, WANG Yulin, HUA Yu. Research of Loran-C data demodulation and decode technology [J]. Chinese Journal of Scientific Instrument, 2012, 33(6): 1407-1413.

陈洪卿. 北斗系统与中国PNT应用平台 [J]. 电子测量与仪器学报, 2010, 24(12): 1075-1081.

CHEN H Q. Beidou satellite navigation system and the application foundation of positioning, navigation timing in China [J]. Journal of Electronic Measurement and Instrument, 2010, 24(12): 1075-1081.

洪德本. 无线电导航仪器 [M]. 大连: 大连海事大学出版社, 1995: 44-46.

贾玉涛. 无线电导航 [M]. 北京: 国防工业出版社, 1983: 68-69.

陆文兴. 航海仪器 [M]. 大连: 大连海事大学出版社, 2001: 26-27.

谭荣煜. 罗兰-C相位编码技术及其应用 [J]. 渔业机械仪器, 1990, 17(86): 18-21.

TAN Rongyu. Loran-C phase coding technology and application [J]. Fishery Machinery and Instrument, 1990, 17(86).

LAST D, BIAN Y. Carrier wave interference and Loran-C receiver performance [J]. IEE Proceedings F: Radar and Signal Processing, 1993, 140(5): 273-283.

周隽, 崔国恒, 许江宁. 罗兰C数据链交叉干扰抑制方法 [J]. 弹箭与制导学报, 2012, 32(4): 173-175.

ZHOU Jun, CUI Guoheng, XU Jiangning. A new CRI suppression method in Loran-C datelink [J]. Journal of Projectiles, Rockets, Missiles and Guidance, 2012, 32(4): 173-175.

林洪文, 周洪庆, 刘福太. 强载波干扰条件下的罗兰-C相位编码识别研究 [J]. 测试技术学报, 2012, 26(3): 252-255.

LIN Hongwen, ZHOU Hongqing, LIU Futai. Research on phase coding identification of Loran-C signal under the background of strong CWI [J]. Journal of Test and Measurement Technology, 2012, 26(3)252-255.

林洪文, 张其善, 杨东凯. 基于apFFT的罗兰-C信号相位编码识别 [J]. 天津大学学报, 2011, 44(3): 257-260.

LIN Hongwen, ZHANG Qishan, YANG Dongkai. Phase coding identification of Loran-C signal based on apFFT [J]. Journal of Tianjin University, 2011, 44(3): 257-260.

BECKMANN M. Interference detection and suppres-sion in Loran-C receivers [J]. IEE Proceedings: F Radar and Signal Processing, 1989, 136(6): 255-261.

MANDIC D P. A generalized normalized gradi-ent descent algorithm [J]. IEEE Signal Processing Letters, 2004, 11(2): 115-118.

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