无人机数据链路的设计
发布时间：2018-12-11 08:23
【摘要】：随着小型无人机应用日渐广泛,使得无人机技术得到了更多的重视和发展。数据链作为无人机系统中重要的部分,主要负责数据的传输和任务指令的下达,如何提高无人机数据传输的稳定性和可靠性已经成为无人机数据链系统的关键任务。本课题旨在搭建一套性能良好、稳定性高、低成本的无人机数据链路系统,为接下来无人机开发提供相应的规范和参考。在对无人机的数据链路系统进行了深入的研究后,提出了一种基于Si4432无线数传电台的单线路数据传输系统方案,然后根据系统中的各个模块的技术性能、硬件设计方案和接口进行了硬件系统的搭建,完成了数据链路系统的基本框架。接下完成了无人机数据连系统的总体设计,针对无人机单链路系统和多链路系统进行比对,选择单链路系统作为无人机的通讯链路。然后对各个传感器的数据报文打包、解析进行开发,制定了相应的数据格式,在传统的数据传输的方法中又加入了拥塞控制,控制了无人机在数据传输中面临的数据拥塞的问题。以及为了避免无人机的使用过程中常出现的同频和相近频率的干扰现象,在通讯系统中加入了相应的调频机制,减少的数据发送和接收中存在的干扰现象,增加了数据传输的稳定性。最后通过地面测试和空地测试,对提出的无人机数据链系统进行相应的实例测试,根据测试结果进行相应的改善,也通过测试说明了该系统的实用性和稳定性。本文设计的无人机数据链系统与传统解决方法相比,降低了系统的复杂程度和成本,在确保数据稳定的传输下,传输效率也有了明显的改善。
[Abstract]:With the increasing application of small UAV, UAV technology has been paid more attention and development. As an important part of UAV system, data link is mainly responsible for data transmission and mission instruction. How to improve the stability and reliability of UAV data transmission has become the key task of UAV data link system. The purpose of this paper is to set up a set of UAV data link system with good performance, high stability and low cost, and provide the corresponding specification and reference for the next UAV development. After deeply studying the data link system of UAV, a single line data transmission system based on Si4432 wireless data transmission station is proposed, and then according to the technical performance of each module in the system, The hardware design scheme and interface are constructed and the basic frame of the data link system is completed. Then the overall design of UAV data connection system is completed. The single link system is selected as the communication link of UAV for the comparison between UAV single link system and multi link system. Then the data packets of each sensor are packaged and analyzed, and the corresponding data format is developed. Congestion control is added to the traditional method of data transmission. The problem of data congestion in UAV data transmission is controlled. In order to avoid the interference of the same frequency and similar frequency in the process of using UAV, the corresponding frequency modulation mechanism is added to the communication system to reduce the interference in the transmission and reception of data. The stability of data transmission is increased. Finally, through the ground test and the ground test, the proposed UAV data link system is tested and improved according to the test results. The practicability and stability of the system are also demonstrated by the test. Compared with the traditional solution, the data link system of UAV designed in this paper reduces the complexity and cost of the system, and the transmission efficiency is improved obviously under the condition of ensuring the stable transmission of data.
【学位授予单位】：东北农业大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：V279
本文编号：2372221
[Abstract]:With the increasing application of small UAV, UAV technology has been paid more attention and development. As an important part of UAV system, data link is mainly responsible for data transmission and mission instruction. How to improve the stability and reliability of UAV data transmission has become the key task of UAV data link system. The purpose of this paper is to set up a set of UAV data link system with good performance, high stability and low cost, and provide the corresponding specification and reference for the next UAV development. After deeply studying the data link system of UAV, a single line data transmission system based on Si4432 wireless data transmission station is proposed, and then according to the technical performance of each module in the system, The hardware design scheme and interface are constructed and the basic frame of the data link system is completed. Then the overall design of UAV data connection system is completed. The single link system is selected as the communication link of UAV for the comparison between UAV single link system and multi link system. Then the data packets of each sensor are packaged and analyzed, and the corresponding data format is developed. Congestion control is added to the traditional method of data transmission. The problem of data congestion in UAV data transmission is controlled. In order to avoid the interference of the same frequency and similar frequency in the process of using UAV, the corresponding frequency modulation mechanism is added to the communication system to reduce the interference in the transmission and reception of data. The stability of data transmission is increased. Finally, through the ground test and the ground test, the proposed UAV data link system is tested and improved according to the test results. The practicability and stability of the system are also demonstrated by the test. Compared with the traditional solution, the data link system of UAV designed in this paper reduces the complexity and cost of the system, and the transmission efficiency is improved obviously under the condition of ensuring the stable transmission of data.
【学位授予单位】：东北农业大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：V279
【参考文献】
相关期刊论文 前1条
1 徐晓丽;刘翠平;梅素平;;异构网络垂直切换判决策略研究[J];网络安全技术与应用;2009年07期
，本文编号：2372221
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