| 基带滤波调制技术深空测控应用性能分析 |
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| 引用本文： | 季刚.基带滤波调制技术深空测控应用性能分析[J].飞行器测控学报,2011(6):6-9. |
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| 作者姓名： | 季刚 |
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| 作者单位： | 北京跟踪与通信技术研究所,北京100094 |
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| 摘 要： | 深空测控的下行链路包括测控和数传2种典型的传输信道,其中数传信道一般具有发射功率大和数据传输速率高的特点,其带外辐射容易对测控信道产生干扰。以典型月球探测器为例,分析比较了数传信道采用常规BPSK（二进制相移键控）调制和基带滤波BPSK调制时,对测控信道的带外辐射影响,并对基带滤波BPSK调制的误码率性能进行了仿真分析,相应结论对未来深空探测任务测控系统总体设计具有十分重要的参考意义。
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| 关 键 词： | 基带滤波调制技术 平方根升余弦滤波器 功率谱密度 误码率 |
Analysis of the Application Performance of Baseband Filter Modulation Technology for Deep Space TT＆C |
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| JI Gang.Analysis of the Application Performance of Baseband Filter Modulation Technology for Deep Space TT＆C[J].Journal of Spacecraft TT&C Technology,2011(6):6-9. |
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| Authors: | JI Gang |
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| Institution: | JI Gang (Beiiing Institute of Tracking and Telecommunications Technology, Beijing 100094) |
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| Abstract: | The downlink of deep space TT＆C consists of two typical transmission channels, TT＆C channel and science data channel. The TT＆C channel could be easily interfered by out-of-band emissions of the science data chan- nel, which has high transmission power and data transmission rate. Taking a typical lunar explorer as an example, the out of-band emission effect is analyzed and compared between general BPSK modulation and baseband filter BPSK modulation. Bit error rate simulation results of baseband filter BPSK modulation are given. The conclusion of the study is of valuable reference to overall design of TT＆C systems in future deep space exploration missions. |
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| Keywords: | Baseband Filter Modulation Technology Square Root Raised Cosine （SRRC） Filter Power SpectralDensity （PSD） Bit Error Rate （BER） |
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