%0 Journal Article
%T Rapid acquisition of long PN code with large Doppler shift in low SNR environment and its DSP platform<br>大频移低信噪比下长PN码快速捕获及其DSP实现
%A ZHAO Yan-jie
%A WANG Da-ming
%A <br>赵艳杰
%A 王大鸣
%J 计算机应用
%D 2007
%I 
%X According to the Long PN Code with large Doppler shift in Low SNR Environment, an improved method of carrier-frequency and code start-point planar search is proposed. Through cycle shift in frequency space, the transformation between several frequency channels is implemented. Using the code search based on multi-phase structure, the calculation complexity was reduced. The platform device is set up with TMS320C6416, and the simulation result demonstrates that this method has better acquisition performance.
%K spread-spectrum code
%K acquisition
%K Doppler shift
%K FFT<br>扩频码
%K 捕获
%K 多普勒频移
%K FFT
%K 频移
%K 低信噪比
%K 快速捕获
%K platform
%K environment
%K and
%K low
%K SNR
%K Doppler
%K shift
%K large
%K code
%K acquisition
%K 捕获性能
%K 结果
%K 实验
%K 仿真
%K 硬件平台
%K 器件
%K 核心
%K 改进方法
%K 运算复杂度
%K 码相位
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=831E194C147C78FAAFCC50BC7ADD1732&aid=9C08F1A6768CB7E6B09091CDE9DF9883&yid=A732AF04DDA03BB3&vid=DB817633AA4F79B9&iid=E158A972A605785F&sid=5E7C14876566242F&eid=CBC69BEA05C12902&journal_id=1001-9081&journal_name=计算机应用&referenced_num=0&reference_num=6