本文選題：衛(wèi)星通信 + 高速數(shù)傳��； 參考：《南京理工大學(xué)》2017年碩士論文

【摘要】：近年來,寬帶衛(wèi)星通信系統(tǒng)得到了巨大的發(fā)展,傳輸?shù)臄?shù)據(jù)也越來越快,所以高速數(shù)據(jù)傳輸技術(shù)的研究迫在眉睫。此外,軍事和國(guó)防應(yīng)用中各種偵察機(jī)、預(yù)警機(jī)、探測(cè)衛(wèi)星等等都迫切得需求高數(shù)數(shù)據(jù)傳輸系統(tǒng)來獲取和傳遞大量的數(shù)據(jù)信息。因此研究和發(fā)展高速數(shù)據(jù)傳輸技術(shù)對(duì)未來星地高速信息的傳輸具有重大的意義。目前來說,高速數(shù)傳系統(tǒng)大都是采用全數(shù)字的調(diào)制解調(diào)結(jié)構(gòu)方式,調(diào)制解調(diào)技術(shù)的關(guān)鍵就是同步技術(shù)。本文以某項(xiàng)目為背景,對(duì)高速數(shù)據(jù)傳輸技術(shù)的解調(diào)技術(shù)進(jìn)行了分析和研究。本文以應(yīng)用需求為背景對(duì)高速數(shù)傳系統(tǒng)進(jìn)行了深入的研究,系統(tǒng)地論述了一種高速數(shù)傳解調(diào)方案,核心思想就是各模塊進(jìn)行并行處理,以資源換取速度,提高數(shù)據(jù)傳輸?shù)乃俣取１疚牡难芯堪ㄒ韵聨讉�(gè)方面:分析比較了各種調(diào)試方式的性能,然后選擇了頻帶利用率和功率利用率都較好的QPSK調(diào)制方式;LDPC編譯碼的實(shí)現(xiàn);高速并行查找表成型濾波器的設(shè)計(jì)與實(shí)現(xiàn);高速時(shí)域并行匹配濾波器的設(shè)計(jì)與實(shí)現(xiàn);基于數(shù)字Costas環(huán)的載波同步環(huán)路結(jié)構(gòu)的仿真與實(shí)現(xiàn);利用Gardner算法的位定時(shí)同步方案的實(shí)現(xiàn);Farrow分段拋物內(nèi)插濾波器的參數(shù)設(shè)計(jì)、性能分析以及并行的結(jié)構(gòu)實(shí)現(xiàn)。最后,給出了系統(tǒng)的硬件設(shè)計(jì)以及系統(tǒng)測(cè)試結(jié)果,證明了方案的正確性與可行性。
[Abstract]:In recent years, the broadband satellite communication system has been a huge development, the transmission of data is becoming faster and faster, so the study of high-speed data transmission technology is urgent. In addition, in military and national defense applications, a variety of reconnaissance aircraft, early warning aircraft, detection satellites, and so on, are in urgent need of high-number data transmission systems to obtain and transfer a large amount of data information. Therefore, the research and development of high-speed data transmission technology is of great significance to the future satellite-ground high-speed information transmission. At present, the high speed data transmission system mostly adopts all digital modulation and demodulation structure, the key of modulation and demodulation technology is synchronization technology. Based on a project, the demodulation technology of high-speed data transmission technology is analyzed and studied in this paper. In this paper, a high speed data transmission system is studied in the background of application requirement, and a high speed data transmission demodulation scheme is systematically discussed. The core idea is that each module can be processed in parallel to exchange resources for speed and improve the speed of data transmission. The research of this paper includes the following aspects: the performance of various debugging methods is analyzed and compared, and then QPSK modulation mode, which has good bandwidth efficiency and power efficiency, is selected to realize LDPC coding and decoding; Design and implementation of high speed parallel look-up table shaping filter, design and implementation of high speed time domain parallel matched filter, simulation and implementation of carrier synchronization loop structure based on digital Costas loop; Using Gardner algorithm to realize bit timing synchronization the parameter design performance analysis and parallel implementation of Farrow parabolic interpolation filter are presented. Finally, the hardware design and test results of the system are given, and the correctness and feasibility of the scheme are proved.
【學(xué)位授予單位】：南京理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TN927.2;TN919.3

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本文編號(hào)：1999002