BEACON SYNCHRONIZATION TECHNOLOGY FOR “BEIDOU” TERRESTRIAL IMPROVEMENT SYSTEM |
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作者姓名: | WEIJin-chen TANGJi-qiang SHENFeng |
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作者单位: | AutomationCollege,HarbinEngineeringUniversity,Harbin,150001,P.R.China |
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摘 要: | Synchronization is an essential technology in the radio navigation system. The technique for improving the “Beidou” positioning ability is presented through constituting the terrestrial improvement system, and the beacon synchronization of the improvement system with the “Beidou” one-way time transfer model is realized.The direct digital synthesis (DDS) is adopted to generate the pseudo-random code clock having high precision and stability. Meanwhile, the CPLD device is used to design the synchronization pulse picking-up module, the spread spectrum PN code generator and the spread spectrum modulator. Measurement results indicate that the beacon synchronization has the high precision and the stability.
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关 键 词: | 无线电导航 陆地修正 时间转换 同步控制 “北斗”双星导航系统 |
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