同步组网跳频电台网络系统的研究与实现

发布时间：2018-02-22 11:49

本文关键词： 跳频同步跳频组网 TDMA 单片机　出处：《北京化工大学》2015年硕士论文　论文类型：学位论文

【摘要】：跳频通信技术是一种载波频率随伪随机序列的变化规律随机跳变的一种通信方式,其具有较强的抗干扰能力,较好的隐蔽性,抗截获能力,另外还可以根据不同的地址码进行多址组网。组网技术是现代通信技术研究的基本内容,以实现多用户之间的互联传输。对于跳频通信,为了满足通信过程中两个以上节点之间实现跳频数据传输,需要对节点终端进行统一管理,根据约定好的规则相互通信,优化信道资源、提高通信效率。跳频电台组网能够提高跳频系统的抗干扰能力和隐蔽性,提升系统的可靠性和数据传输的有效性。基于跳频技术以及组网技术,本论文展开了跳频电台网络系统的组网研究与设计,研究和设计了跳频电台的组网接入方案,组网同步方案以及多种通信模式。该组网方案适合由中心节点以及多个从节点组成的网络系统,并由中心节点控制网络初始同步、同步保持、迟入网处理以及通信保持。针对组网过程中多节点跳频接入以及同步保持问题,本文提出了一种快速的组网同步算法,主节点快速跳频扫描,从节点慢速跳频扫描跟踪,能够快速的建立稳定同步。针对多节点同时连续收发通信的需求,设计了基于TDMA技术的多节点分时隙通信方式,实现多节点跳频数据互传以及迟入网节点迟入网处理。另外还对跳频电台组网的图案组以及抗干扰性、抗截获性进行了进一步的研究,设计了适合本系统同步过程和通信过程的跳频图案组,及多图案变跳速的抗干扰策略。最终系统在以单片机为控制器,配合无线射频芯片的硬件平台进行程序设计、验证与实现,结果表明该组网系统能够快速建立组网同步,实现多节点分时通信,误码率低,抗干扰性能好,稳定可靠。
[Abstract]:Frequency hopping (FH) communication technology is a kind of communication mode in which carrier frequency changes with pseudorandom sequence. It has strong anti-jamming ability, better concealment and anti-interception ability. In addition, multiple access networks can be constructed according to different address codes. Networking technology is the basic content of modern communication technology to realize interconnection transmission between multiple users. In order to realize the frequency hopping data transmission between two or more nodes in the communication process, it is necessary to manage the node terminals uniformly, communicate with each other according to the agreed rules, and optimize the channel resources. Improve communication efficiency. Frequency hopping radio network can improve the anti-jamming ability and concealment of frequency hopping system, enhance the reliability of the system and the effectiveness of data transmission. In this paper, the research and design of frequency hopping station network system is carried out, and the network access scheme of frequency hopping station is studied and designed. The network synchronization scheme and various communication modes are suitable for a network system composed of central nodes and multiple slave nodes, and the center node controls the initial synchronization and synchronization of the network. In order to solve the problem of multi-node frequency-hopping access and synchronization maintenance in the process of networking, this paper presents a fast synchronization algorithm, which is fast frequency-hopping scanning for master node and scanning tracking for slow frequency-hopping from node. To meet the need of multi-node continuous transceiver communication, a multi-node time-slot communication method based on TDMA technology is designed. The multi-node frequency hopping data is transmitted to each other and the late access node is processed. In addition, the pattern group, anti-jamming and anti-interception of the frequency hopping station network are further studied. The frequency hopping pattern group suitable for the synchronization process and communication process of the system is designed, and the anti-jamming strategy of multi-pattern variable speed hopping is designed. Finally, the system is programmed with the MCU as the controller and the hardware platform of the radio frequency chip. The results show that the system can quickly set up network synchronization, realize multi-node time-sharing communication, low bit error rate, good anti-jamming performance, stable and reliable.
【学位授予单位】：北京化工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TN914.41

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