| 摘要: |
| 针对国内外学者关于星体是导致“北斗”卫星码载波偏差随观测仰角存在相关性的主要原因的怀疑，提出了一种导航卫星发射端星体多径的高精度测试方法。利用连续频率调制信号的时域合成，获得窄时域脉冲，通过时域窗函数截取多径信号，从而获得多径的高精度延时和幅度。理论分析和试验验证表明：所提方法简单有效，获得了较高的时域分辨性能和测量精度，由此得出了导航卫星星体多径不是产生码载波偏差主要原因的结论。 |
| 关键词: 导航卫星 发射端 多径测量 码载波偏差 |
| DOI： |
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| 基金项目: |
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| High precision measurement of multipath for emission platform of navigation satellite |
| ZHENG Changgang,HUANG Zhigang,KANG Chengbin |
| () |
| Abstract: |
| In view of the scholars’ review that satellite is the main cause of correlation between divergences of code-carrier of BD satellites(BDS) and observation angle,a high precision method of measuring multipath caused by satellite is presented. This method gets narrow time pulse by using continous frequency modulated signal,and acquires interested multipath signal by time domain window function,in order to obtain the high precision time delay and intensity of multipath signals. By theoretical analysis and test verification,the method is proved to be simple and effective,and high performances of time domain distinguishment and measurement precision are achieved. Based on the method,the conclusion is drawn that multipath of satellite is not the cause of the divergences of code-carrier. |
| Key words: navigation satellite emission platform measurement of multipath code-carrier divergence |
《电讯技术》编辑部 