Filtering and digital phase compensation of IRIG-B (AC) code in airborne equipment

ZHANG Xue-ming; ZHANG Zhen-ya; DAI Ming; SUN Jing-hui

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Filtering and digital phase compensation of IRIG-B (AC) code in airborne equipment

Article | 更新时间：2020-08-12

- Filtering and digital phase compensation of IRIG-B (AC) code in airborne equipment
- Optics and Precision Engineering Vol. 17, Issue 1, Pages: 213-219(2009)
- 作者机构：
  
  1. 中国科学院长春光学精密机械与物理研究所,吉林长春,中国,130033
  2. 长春工业大学计算机科学与工程学院,吉林长春,130012
- 作者简介：
- 基金信息：
- DOI：
  CLC： V557
- Received：23 June 2008，
  
  Revised：23 July 2008，
  
  Published：2009
- 稿件说明：
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张学明, 张振娅, 戴明, 孙敬辉. 机载设备IRIG-B(AC)码的滤波及其数字相位补偿[J]. 光学精密工程, 2009,17(1): 213-219

ZHANG Xue-ming, ZHANG Zhen-ya, DAI Ming, SUN Jing-hui. Filtering and digital phase compensation of IRIG-B (AC) code in airborne equipment[J]. Editorial Office of Optics and Precision Engineering, 2009,17(1): 213-219
张学明, 张振娅, 戴明, 孙敬辉. 机载设备IRIG-B(AC)码的滤波及其数字相位补偿[J]. 光学精密工程, 2009,17(1): 213-219 DOI：

ZHANG Xue-ming, ZHANG Zhen-ya, DAI Ming, SUN Jing-hui. Filtering and digital phase compensation of IRIG-B (AC) code in airborne equipment[J]. Editorial Office of Optics and Precision Engineering, 2009,17(1): 213-219 DOI：

摘要

为了解决机载环境下交流B 码信号中的噪声和畸变问题

提高解码的精度和稳定性

设计了中心频率在1 kHz的带通滤波器对IRIG-B码信号进行滤波;然后

针对滤波后所引入的相位差设计了一个数字补偿电路

对1 PPS信号进行相位校准

消除相位误差。实验结果表明:滤波有效地抑制了信号中的噪声

还将失真的信号还原成真实的信号

无用的频率信号以-34 dB/十倍频率的水平得到抑制;经过数字相位补偿后

不仅消除了由于滤波所引入的相位差

而且消除了由于过零器的过零精度等所引入的相位差

1 PPS准时点的精度由文献[1]的优于 10 s提高到了优于3 s。该设计满足机载环境下交流时间码的解码要求

消除了噪声的干扰和信号的失真

提高了解码的精度和稳定性。

Abstract

In order to eliminate the interference of airborne environment and to improve the precision of decode and the EMC ability

the filtering of IRIG-B (AC) and the compensation of phase hysteresis caused by the filter are studied. A band-pass filter with a 1 kHz center frequency is designed

then the digital compensation is used for the phase hysteresis caused by filter. The results show that the ability of anti-jamming

anti-distortion and the decoding stability of the decoder are improved

and the useless frequency signals are depressed by -34 dB/10 octave. The digital compensation strategy can eliminate not only the phase hysteresis

but also the error caused by zero-crossing detector. The timing precision of 1 PPS is enhanced from better than 10 s to better than 3 s.The airborne system satisfies the decoding requirement of IRIG-B (AC)

eliminates the noise interference and signal distortion

and enhances the decoding precision and stability.

关键词

Keywords

references

陈涛,曹永刚. IRIG-B码数字解调技术[J]. 光学精密工程,1999,7(2):73-75. CHEN T,CAO Y G. IRIG-B code digital demodulation technology[J].Opt. Precision Eng.,1999,7(2):91-95.(in Chinese)[2] 高昕,王建立,吉桐伯,等. 光电跟踪传递函数的测试及其相位补偿[J]. 光学精密工程,2005,13(增):42-45. GAO X,WANG J L,JI T B,et al.. Photoelectric transfer function of tracking and testing phase compensation[J].Opt. Precision Eng., 2005,13(Supp.):42-45.(in Chinese)[3] 张智永,范大鹏,范世珣. 光电稳定跟踪装置的控制系统设计[J]. 光学精密工程,2006,14(4):681-688. ZHANG ZH Y,FAN D P,FAN SH X. Optoelectronic devices to track the stability control system design[J].Opt. Precision Eng., 2006,14(4):681-688.(in Chinese)[4] 张辉. 新一代的IRIG-B码时统终端的设计[J]. 微处理机,2004,25(5):49-51,54. ZHANG H. A new generation of IRIG-B code EC terminal design [J]. Microprocessors, 2004,25(5):49-51,54.(in Chinese)[5] 马红皎,胡永辉. GPS＆IRIG-B码时间系统分析 [J]. 电子科技,2005(7):21-25. MAO H J,HU Y H.GPS & IRIG-B time code analysis [J]. Electronic Technology,2005(7):21-25.(in Chinese)[6] 王建立,吉桐伯,高昕,等. 加速度滞后补偿提高光电跟踪系统精度的方法[J]. 光学精密工程,2006,13(6):681-685. WANG J L,JI T B,GAO X,et al.. Acceleration delay compensation tracking system to improve the accuracy of the photoelectric method [J].Opt. Precision Eng., 2006,13(6):681-685.(in Chinese)[7] 马建华,王欣奎. IRIG-B码时统终端设计[J]. 北华大学学报(自然科学版), 2005,6(5):463-465. MA J H,WANG X K. IRIG-B code EC terminal design [J]. North China University Journal(Natural Science),2005,6(5):463-465.(in Chinese)[8] 刘同怀,杨基海,李东林.模拟电子线路[M]. 合肥:中国科技大学出版社,1999. LIU T H,YANG J H,LI D L. Analog Electronic Circuits[M].Hefei: Chinese Scientific and Technical University Press,1999.(in Chinese)[9] 王成华,潘双来,江爱华.电路与模拟电子学[M]. 北京:科学出版社,2003. WANG CH H,PAN SH L,JIANG A H. Circuits and Analog Electronics [M].Beijing: Science Press,2003.(in Chinese)

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