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| 基于Colley-Tukey算法对GPS捕获过程的优化 | |
| 引用本文： | 顾俊,毛志刚. 基于Colley-Tukey算法对GPS捕获过程的优化[J]. 信息技术, 2008, 32(7) |
| 作者姓名： | 顾俊 毛志刚 |
| 作者单位： | 上海交通大学微电子学院,上海,200240 |
| 摘 要： | 根据GPS捕获过程中相关运算的计算速度要求,针对常用的频域FFT算法速度快但规定采样点的点数N必须为2的整数幂的缺点,分析了如何利用Colley-Tukey算法对部分可分解的N值的相关运算进行优化,从而在时域算法保证精确度,同时又在速度上接近FFT算法.最后在Matlab环境下对算法进行了验证. |
| 关 键 词： | Colley-Tukey算法 GPS捕获 相关运算 |
Optimizing the acquisition of GPS signal based on Colley-Tukey algorithm |
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| GU Jun,MAO Zhi-gang. Optimizing the acquisition of GPS signal based on Colley-Tukey algorithm[J]. Information Technology, 2008, 32(7) | |
| Authors: | GU Jun MAO Zhi-gang |
| Affiliation: | GU Jun,MAO Zhi-gang (Microelectronic School of Shanghai Jiaotong University,Shanghai 200240,China) |
| Abstract: | This paper is based on the speed requirement of the correlation computation and the fact that the commonly used FFT algorithm has the high computation speed together with the defect of the requirement that the number of sample points is the integer power of 2.Then it analyzes the use of Colley-Tukey algorithm on some N values that can be factorized to optimize the correlation computation.This method can acquire the precision of the correlation computed in time domain and its computation speed is near to the... |
| Keywords: | Colley-Tukey algorithm GPS acquisition correlation computation |
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