车载动中通上位机监控系统的设计与实现

发布时间：2018-04-14 14:34

本文选题：监控系统 + 天线方向图　；参考：《南京邮电大学》2016年硕士论文

【摘要】：本文主要研究车载动中通卫星通信地球站上位机监控系统,该地球站在车体运动情况下能够和目标卫星时刻保持高质量的卫星通信链路,实现语音、图像、视频等信息载体的传输与通信。车载动中通监控系统是置于车内的超小口径卫星通信地球站的监控系统。它通过串口与车载卫星天线进行通信,监控天线实时状态,修改与监视卫星参数。本系统的建立极大的方便了操作者,它是车载卫星天线系统中必不可少的部分。本系统使用简单,功能强大,适用于任何VSAT系统的监视。监控系统由电源模块、串口通信模块、存储模块、信标失锁模块、按键模块和屏幕显示等核心模块组成。各模块相互协调、统一合作。上述核心模块的硬件设计思路和软件实现是本文研究重点。天线性能一直是通信系统较为重要的指标,实际测量天线性能时,离不开对天线方向图的反复测试和研究。本文着重研究基于一阶贝塞尔函数的天线方向图的理论推导;并通过地心坐标、地理坐标和载体坐标的转换推导出天线对星所需方位角和俯仰角的理论值;针对实际天线方向图运用交叉和变异概率可自适应的小生境遗传算法寻找全局最优点,创新地提出了针对天线方向图进行的对星优化算法。目前,本系统在实验室测试环境和实际装车测试环境均取得了良好的测试结果,实现了快速对星和稳定跟踪的目标。
[Abstract]:This paper mainly studies the upper computer monitoring system of the on-board moving satellite communication earth station. The earth station can maintain high quality satellite communication link with the target satellite when the car body is moving, and realize the voice and image.The transmission and communication of video and other information carriers.The on-board mobile communication monitoring system is a monitoring system for the very small diameter satellite communication earth station in the vehicle.It communicates with the on-board satellite antenna through serial port, monitors the real-time state of the antenna, and modifies and monitors the satellite parameters.The establishment of the system greatly facilitates the operator, it is an essential part of the vehicle satellite antenna system.The system is simple to use, powerful, suitable for any VSAT system monitoring.The monitoring system consists of power module, serial communication module, storage module, beacon lost lock module, key module and screen display module.Each module coordinates with each other, unifies the cooperation.The hardware design and software implementation of the above core modules are the focus of this paper.Antenna performance is always an important index of communication system. In the actual measurement of antenna performance, it is necessary to repeatedly test and study the antenna pattern.In this paper, the theoretical derivation of antenna pattern based on first order Bessel function is studied, and the theoretical values of azimuth and pitch angle of antenna to star are deduced through the transformation of geocentric coordinate, geographical coordinate and carrier coordinate.Aiming at finding the global advantages of the niche genetic algorithm which can adapt the crossover and mutation probability to the antenna pattern, a star optimization algorithm for antenna pattern is proposed in this paper.At present, the system has achieved good test results in both the laboratory test environment and the actual loading test environment, and has achieved the goal of fast star and stable tracking.
【学位授予单位】：南京邮电大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TN927.2;TP277

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