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Research on the MAI Model of TWSTFT System and MAI Suppression Algorithm

机译:TWSTFT系统的MAI模型及MAI抑制算法研究

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Because of the advantage of high precision and long operating range, TWSTFT is becoming more and more important in the areas including time reference system establishment and maintenance, construction of GNSS and aerospace measurement and control. Focus on the multiple access interference (MAI) produced with the multiple signals in the same frequency in TWSTFT system, deep analysis is given in the article. Quantitative research of the influence of MAI to the measurement precision of spread spectrum signal and time comparison is made based on the theory simulation and experiment. The error model of MAI of TWSTFT is established, which is the basis of the signal link design and system performance evaluation. A MAI suppression algorithm of TWSTFT system is given in the article, and its effectiveness of the improvement of measurement precision is proved by experiments.
机译:由于高精度和高工作范围的优势,TWSTFT在时间基准系统的建立和维护,GNSS的构建以及航空航天测控等领域中变得越来越重要。重点研究了TWSTFT系统中相同频率下多个信号所产生的多址干扰(MAI),并对其进行了深入的分析。在理论仿真和实验的基础上,对MAI对扩频信号的测量精度和时间比较的影响进行了定量研究。建立了TWSTFT MAI的误差模型,为信号链路设计和系统性能评估奠定了基础。给出了TWSTFT系统的MAI抑制算法,并通过实验证明了其对提高测量精度的有效性。

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