Research of FFT-based Differentially Coherent Integration Acquisition Method of GPS weak signal

摘要：

In the area of weak signal acquisition which has low SNR,coherent and noncoherent integration are used.Normally,the combination of the two ways can perform a better sensitive.For the purpose of getting a higher acquisition speed and accuracy of GPS weak signal which has low SNR,this article indicates the differentially coherent integration capture method based on FFT.It also gives the simulation based on Matlab and comparison to coherent and noncoherent integration method.It will come to a conclusion at last: the differentially coherent integration capture algorithm based on FFT can improve SNR fast more while use not very long acquisition time.

关键词： GPS weak signal Fast Fourier Transform differentially coherent integration Acquisition

作者: Xiaoyan Jiang

作者单位: Department of Information Technology Nanjing Technical College of Spacial Education,Nanjing,China

会议类型: 国际会议

会议名称: 2011 3rd International Conference on Computer and Network Technology(ICCNT 2011)(2011第三届IEEE计算机与网络技术国际会议)

会议地点: 太原

会议语种:英文

页码: 552-556

在线出版日期: 2011-02-26（万方平台首次上网日期，不代表论文的发表时间）