摘要
GPS软件接收机在移植性、灵活性等方面具有很大的优势。本文从GPS软件接收机的角度讨论了GPS频域相关捕获算法。本文分析了算法的理论模型,并利用Matlab对算法进行仿真实现,成功地解算出GPS信号的码相位偏移和载波多普勒偏移。与传统的滑动相关算法进行了运算量的比较,证明了频域相关捕获算法的优越性。
GPS software receiver had great advantages in reconflguration and flexibility. In this paper, we discussed the frequency domain correlation acquisition algorithm in GPS software receiver. Based on the analysis of the acquisition algorithm theoretic model,an acquisition scheme is implemented in Matlab, in which the code phase and Doppler shift in GPS signal can be successfully calculated. Comparison between frequency domain and time domain acquisition method is discussed and the result demonstrated that the former is better than the latter in computation burden.
出处
《微计算机信息》
北大核心
2006年第12S期186-187,208,共3页
Control & Automation
关键词
GPS软件接收机
粗捕获码
捕获
快速傅里叶变换
GPS software receiver,Coarse/Acquisitlon code,Acquisition, Fast Fourier Transform
