High Resolution Code Acquisition Method Using Parabolic Interpolation for DSSS System

摘要：

A DSSS signal acquisition algorithm is proposed to improve the spectrum peak degradation and the Doppler frequency measurement precision. It first integrates the data weighted by hanning-window,and then does the FFT analysis. Finally,it uses data points around the spectrum peak to determine a parabolic interpolation function,and then gets the position of the maximum point of the function to compute the Doppler frequency. Both analysis and simulation demonstrate that compared with the existing FFT-based code acquisition scheme,the proposed algorithm can reduce the degradation of the spectrum peak and improve the precision of the Doppler frequency measurement.

关键词： direct sequence spread spectrum code acquisition partial matched filter fast Fourier transform parabolic interpolation

作者: Lanying Zhang Sijie Yuan Yuan Chen Jun Yang

作者单位: TT&C Research Center,Academy of Equipment Command & Technology Beijing 101416,China

会议类型: 国际会议

会议名称: 2009 9th International Conference on Electronic Measurement & Instruments(第九届电子测量与仪器国际会议 ICEMI2009)

会议地点: 北京

会议语种:英文

页码: 953-956

在线出版日期: 2009-08-16（万方平台首次上网日期，不代表论文的发表时间）