發(fā)布時(shí)間：2018-12-11 08:23

【摘要】：隨著小型無(wú)人機(jī)應(yīng)用日漸廣泛,使得無(wú)人機(jī)技術(shù)得到了更多的重視和發(fā)展。數(shù)據(jù)鏈作為無(wú)人機(jī)系統(tǒng)中重要的部分,主要負(fù)責(zé)數(shù)據(jù)的傳輸和任務(wù)指令的下達(dá),如何提高無(wú)人機(jī)數(shù)據(jù)傳輸?shù)姆�(wěn)定性和可靠性已經(jīng)成為無(wú)人機(jī)數(shù)據(jù)鏈系統(tǒng)的關(guān)鍵任務(wù)。本課題旨在搭建一套性能良好、穩(wěn)定性高、低成本的無(wú)人機(jī)數(shù)據(jù)鏈路系統(tǒng),為接下來無(wú)人機(jī)開發(fā)提供相應(yīng)的規(guī)范和參考。在對(duì)無(wú)人機(jī)的數(shù)據(jù)鏈路系統(tǒng)進(jìn)行了深入的研究后,提出了一種基于Si4432無(wú)線數(shù)傳電臺(tái)的單線路數(shù)據(jù)傳輸系統(tǒng)方案,然后根據(jù)系統(tǒng)中的各個(gè)模塊的技術(shù)性能、硬件設(shè)計(jì)方案和接口進(jìn)行了硬件系統(tǒng)的搭建,完成了數(shù)據(jù)鏈路系統(tǒng)的基本框架。接下完成了無(wú)人機(jī)數(shù)據(jù)連系統(tǒng)的總體設(shè)計(jì),針對(duì)無(wú)人機(jī)單鏈路系統(tǒng)和多鏈路系統(tǒng)進(jìn)行比對(duì),選擇單鏈路系統(tǒng)作為無(wú)人機(jī)的通訊鏈路。然后對(duì)各個(gè)傳感器的數(shù)據(jù)報(bào)文打包、解析進(jìn)行開發(fā),制定了相應(yīng)的數(shù)據(jù)格式,在傳統(tǒng)的數(shù)據(jù)傳輸?shù)姆椒ㄖ杏旨尤肓藫砣刂?控制了無(wú)人機(jī)在數(shù)據(jù)傳輸中面臨的數(shù)據(jù)擁塞的問題。以及為了避免無(wú)人機(jī)的使用過程中常出現(xiàn)的同頻和相近頻率的干擾現(xiàn)象,在通訊系統(tǒng)中加入了相應(yīng)的調(diào)頻機(jī)制,減少的數(shù)據(jù)發(fā)送和接收中存在的干擾現(xiàn)象,增加了數(shù)據(jù)傳輸?shù)姆�(wěn)定性。最后通過地面測(cè)試和空地測(cè)試,對(duì)提出的無(wú)人機(jī)數(shù)據(jù)鏈系統(tǒng)進(jìn)行相應(yīng)的實(shí)例測(cè)試,根據(jù)測(cè)試結(jié)果進(jìn)行相應(yīng)的改善,也通過測(cè)試說明了該系統(tǒng)的實(shí)用性和穩(wěn)定性。本文設(shè)計(jì)的無(wú)人機(jī)數(shù)據(jù)鏈系統(tǒng)與傳統(tǒng)解決方法相比,降低了系統(tǒng)的復(fù)雜程度和成本,在確保數(shù)據(jù)穩(wěn)定的傳輸下,傳輸效率也有了明顯的改善。
[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.
【學(xué)位授予單位】：東北農(nóng)業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：V279

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本文編號(hào)：2372221