| 中频数据卫星捕获算法研究 |
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| 引用本文： | 史线龙,于力,宋雪源,王晓南.中频数据卫星捕获算法研究[J].测绘科学,2011,36(2):67-69,161. |
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| 作者姓名： | 史线龙 于力 宋雪源 王晓南 |
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| 作者单位： | 63883部队; |
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| 摘 要： | 软件无线电技术在卫星导航接收机中的应用在很大程度上改变了基带信号的处理方法.本文详细论述了基于FFT的频域快速捕获技术,通过对实测中频数据实验分析,指出仅利用门限方法无法准确在频域判决可视卫星,必须依靠其他信息进行辅助判决.在分析通过实测数据获得的可视卫星在连续扩频码周期内多普勒和伪码相位变化规律的基础上,给出了采用多...
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| 关 键 词： | 软件无线电 GPS 捕获 FFT |
Satellite acquisition algorithm based on FFT data |
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| SHI Xian-long,YU Li,SONG Xue-yuan,WANG Xiao-nan.Satellite acquisition algorithm based on FFT data[J].Science of Surveying and Mapping,2011,36(2):67-69,161. |
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| Authors: | SHI Xian-long YU Li SONG Xue-yuan WANG Xiao-nan |
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| Institution: | SHI Xian-long,YU Li,SONG Xue-yuan,WANG Xiao-nan(Troops 63883,Henan Luoyang 471000,China) |
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| Abstract: | The application of software defined radio technology in satellite navigation receiver field has greatly changed the way of processing baseband signal.Based on the detailed discussion on fast acquisition technology in frequency domain using FFT,the paper pointed out that it can't correctly find out all the visible satellites just only by means of a valve from the analysis of raw data,and it must need other information to assist to make it.Based on the analysis of the change rule of the visible satellites'Dop... |
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| Keywords: | software defined radio GPS acquisition FFT |
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