| 基于星历信息的星地链路补偿关键技术及FPGA实现 |
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| 引用本文： | 张萌. 基于星历信息的星地链路补偿关键技术及FPGA实现[J]. 现代导航, 2022, 13(5): 363-368 |
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| 作者姓名： | 张萌 |
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| 作者单位： | 中国电子科技集团公司第二十研究所,西安 710068 |
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| 摘 要： | 针对星地链路中的多普勒频偏和采样点漂移问题，分析了多普勒频偏和采样点漂移产生的原因，提出了一种基于星历信息的补偿技术，采用Farrow滤波补偿采样点漂移，并在FPGA中进行实现验证，对滤波前后的波形进行对比，性能基本保持一致。
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| 关 键 词： | 星地链路 多普勒频偏 采样点漂移 Farrow滤波器 FPGA |
Key Technique and FPGA Implementation of Satellite-Ground Link Compensation Based on Handoverephemeris Information |
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| ZHANG Meng. Key Technique and FPGA Implementation of Satellite-Ground Link Compensation Based on Handoverephemeris Information[J]. Modern Navigation, 2022, 13(5): 363-368 |
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| Authors: | ZHANG Meng |
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| Abstract: | To solve the doppler frequency offset and sample drifting of the satellite-ground link, the generation of doppler frequency offset and sample drifting is analyzed. A compensation technique based on handoverephemeris information is proposed, farrow filter is used to compensate the sample drifting and it is verified in FPGA. The waveform before and after the filter is compared, and the performance is almost same. |
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