| 卫星双向时间传递调制解调器跟踪环路设计CSCD |
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| 引用本文： | 王学运,王海峰,张升康,王亮.卫星双向时间传递调制解调器跟踪环路设计CSCD[J].宇航计测技术,2016,36(1):18-23. |
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| 作者姓名： | 王学运 王海峰 张升康 王亮 |
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| 作者单位： | 1、北京无线电计量测试研究所，北京 100039；;
2、计量与校准技术重点实验室，北京，100039 |
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| 摘 要： | 精密跟踪技术是高精度伪码测距系统中的关键技术,根据卫星双向时间比对调制解调器的工作特点,对解调器的跟踪环路进行了研究,并利用Matlab进行环路设计与仿真,分析了不同载噪比、不同环路带宽条件下跟踪环路的性能;根据软件仿真结果,在DSP+FPGA硬件平台上加以实现,给出测试结果,并最终应用到自主开发的卫星双向时间比对调制解调器上,测量不确定度优于1ns。
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| 关 键 词： | 卫星双向时间传递 调制解调器 载波跟踪 伪码跟踪 |
Design of Two-Way Satellite Time Transfer Modem Tracking Loop |
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| WANG Xue-yun,WANG Hai-feng,ZHANG Sheng-kang,WANG Liang.Design of Two-Way Satellite Time Transfer Modem Tracking Loop[J].Journal of Astronautic Metrology and Measurement,2016,36(1):18-23. |
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| Authors: | WANG Xue-yun WANG Hai-feng ZHANG Sheng-kang WANG Liang |
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| Institution: | 1、Beijing Institute of Metrology and Measurement, Beijing, 100039;
2、Science and Technology on Metrology and Calibration Laboratory, Beijing, 100039 |
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| Abstract: | The tracking technology is the key of pseudo noise(PN) ranging system.Referring to the character of Two-Way Satellite Time Transfer modem,A tracking loop of demodulator has been researched. The tracking loop was designed and simulated Using Matlab software,and the tracking capability with different carrier to noise ratio and loop bandwidth was analyzed. Referring to the simulation results, The tracking loop was implemented based on DSP and FPGA, and the test results was obtained.The tracking loop has used in Two-Way Satellite Time Transfer modem,which is developed by our own and the uncertainty is within one nanosecond. |
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| Keywords: | Two-way satellite time transfer Modem Carrier tracking PN sequence tracking |
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