谁能帮我翻译一下论文摘要啊?汉译英,不要在线翻的!谢谢!

发布网友发布时间：2022-05-10 15:36

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热心网友时间：2023-10-13 23:15

Under the short wave extremely low signal-to-noise ratio condition data transmission militarily is the lowest safeguard correspondence one method.It has the antijamming and anti-multi-diameter ability, the frequency spectrum use factor is high, signal hiding and so on a series of merits. The present paper uses the direct sequence spread spectrum technology, key to short-wave communication and direct sequence spread spectrum correspondence characteristic as well as union advantage, wide frequency code proction, the direct sequence spread spectrum communications system technology and the principle, the wide frequency synchronization technology, the RAKE receive technology has concted the research and the analysis.The knowledge studies which according to oneself and unifies own ability, designed under one kind of extremely low signal-to-noise ratio condition short wave DS-SS communications system.And has carried on the preliminary molar design and the simulation with mathematics software to the system, has laid the rationale for the reality system design.