期刊文献+

基于数字匹配滤波器的扩频码捕获技术研究 被引量:3

Research on Technology of Spread Spectrum Code Acquisition Based on Digital Matched Filter
下载PDF
导出
摘要 介绍并分析了匹配滤波器扩频码捕获算法的数字实现方式。数字匹配滤波器(Digital Matched Filter,DMF)在扩频码长较长时,耗费的硬件资源较多,实现困难,针对该问题提出了差动解决方案,在不损失性能的前提下大大降低了DMF的硬件复杂度。针对DMF对多普勒频移过于敏感这一缺点,提出了加窗方案,使得其在同一多普勒频移下输出增益衰减较小。通过仿真,证明了改进方案的优越性。 This paper introduces and analyzes the digital implementation method of matched filter. In the condition of longer spread spectrum code,the Digital Matched Filter (DMF) consumes more hardware resource. Aiming at this problem,this paper puts forward an differential solution. By using this solution, the complexity of hardware of DMF can be significantly decreased without performance reduction. Aiming at the problem that DMF is too sensitive to Doppler frequency shift,the windowed solution is proposed to realize the less attenuation of output gain under the same Doppler frequency shift. The simulation results prove the superiority of the improved scheme.
作者 袁昱 王钢
出处 《无线电通信技术》 2013年第6期86-89,共4页 Radio Communications Technology
关键词 DMF 采样 差动 加窗 DMF sampling differential windowed
  • 相关文献

参考文献10

  • 1YONG C, ZHAO H S. Design and Realization of Fast Code Acquisition for Long PN Code Spread Spectrum Communication in LEO Satellite [ C ]//Communications, Circuits and Systems Proceedings, 2006 International Conference on. IEEE ,2006,2 : 1161 - 1164.
  • 2LEE Y T,CHANG C M, MAO W L, et al. Matched-filter- based Low - complexity Correlator for Simultaneously Acquiring Global Positioning System Satellites [ J ]. IET Radar,Sonar & Navigation,2010,4(5) :712 -723.
  • 3JIANG L, REN G, WANG G, et al. The Design of a Matched Filter based on Time Division Multiplex [ J ]. Information Technology Journal, 2011, 10 ( 8 ) : 1641 - 1644.
  • 4HUANG L, ZHANG T, BAI J, et al. Study of Carrier Tracking for High Dynamic M-ary Spread Spectrum Signals [ C ]//Image and Signal Processing (CISP) , 2011 4th International Congress on. IEEE ,2011,1:261 - 265.
  • 5SONG W, ZHANG J, FAN H. Research on the Digital Carrier Tracking Technique for High Dynamic Spread Spectrum Receiver [ C ]//Networks Security, Wireless Communications and Trusted Computing, 2009. NSWCTC' 09. International Conference on. IEEE, 2009, 2:419 -422.
  • 6YU G. A Synchronization Design of Double-PN QPSK-DSSS System [ C ]//Internet Technology and Applications ( iTAP ), 2011 International Conference on. IEEE,2011:1 -4.
  • 7沈业兵,安建平,王爱华.数字匹配滤波器的递归折叠实现[J].北京理工大学学报,2006,26(8):733-736. 被引量:13
  • 8WEI Y, BO Z, WASTON R, LACHAPELLE G. Differential Combining for Acquiring Weak GPS Signals [ J ]. Science Direct Signal Processing ,2007,87 ( 5 ) : 824 - 840.
  • 9潘申富,白栋,吴晓富,梁庆林.基于码匹配滤波的数字化直扩接收机[J].通信学报,2003,24(9):117-121. 被引量:6
  • 10章兰英,袁嗣杰,陈源.航天扩频测控系统中伪码捕获方法研究[J].电子学报,2011,39(6):1471-1476. 被引量:20

二级参考文献24

  • 1李彤,沈兰荪.全数字接收机的结构及关键技术[J].电信科学,1995,11(2):25-31. 被引量:11
  • 2郭南,洪福明.直接序列扩频数字匹配滤波器[J].电子科技大学学报,1996,25(5):455-459. 被引量:10
  • 3龚国辉,李思昆.直序扩频信号PN码相位的自适应测量算法[J].电子学报,2006,34(7):1325-1328. 被引量:3
  • 4张文忠,沈兰荪.全数字接收机中最佳匹配滤波器的设计[J].重庆邮电学院学报(自然科学版),1996,8(4):26-29. 被引量:1
  • 5杨小牛,楼才一,徐建良.软件无线电原理与应用[M].北京:电子工业出版社,2006,2-5.
  • 6胡广书.数字信号处理--理论、算法与实现[M].北京:清华大学出版社,2006:305.
  • 7Van Nee D J R, Coenen A J R M.New fast GPS code-acquisi- tion technique using FFF[J]. Electronics Letters, 1991,27 (2) : 158- 160.
  • 8Coenen A J R M,Van Nee D J R. Novel fast GPS/GLONASS code acquisition technique using low update rate FPT [ J]. Electronics Letters, 1992,28(9) : 863 - 865.
  • 9Tsui J B Y. Fundamentals of Global Positioning System Re- ceivers:A Software Approach[ M]. New York: John Wiley &Sons, INC. 2000. 133 - 146.
  • 10Spillard C L, Spangenberg S M,Povey G J R.A serial-parrallel FFT correlator for PN code acquisition from LEO satellites [ A ]. IEEE 5th International Symposium on Spread Spectrum Techniques and Applocations[ C]. Pistcataway, NJ: IEEE Press, 1998.446 - 448.

共引文献36

同被引文献27

引证文献3

二级引证文献7

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