多天线系统应用在无人卫星通信链路中的性能研究

Research on the Performance of Multi-Antenna System Applied to Unmanned Communication Link

随着无人卫星通信链路的发展,其信号衰减、干扰和链路可靠性成为关注焦点。深入探讨多天线系统在无人卫星通信链路中的应用,分析信道模型及其干扰,进而研究多天线系统的核心原理,如空时编码和多输入多输出(Multiple Input Multiple Output,MIMO)技术,并设计基于多天线的协议,强调其在信道估计和调制编码的重要性。实验对比表明,多天线系统在信号质量和传输速率上明显优于单天线系统,但在实际应用中还面临硬件和兼容性挑战。

With the development of unmanned satellite communication links,signal attenuation,interference,and link reliability have become the focus of attention.Deeply explore the application of multi antenna systems in unmanned satellite communication links,analyze channel models and their interference,and further study the core principles of multi antenna systems,such as space-time coding and Multiple Input Multiple Output(MIMO)technology.Design protocols based on multiple antennas,emphasizing their importance in channel estimation and modulation coding.Experimental comparison shows that multi antenna systems are significantly better than single antenna systems in signal quality and transmission rate,but they still face hardware and compatibility challenges in practical applications.