本文選題：電視白頻譜 + 標(biāo)準(zhǔn)傳播模型��； 參考：《海南大學(xué)》2016年碩士論文

【摘要】：隨著南海海上開發(fā)的逐步發(fā)展,海上旅游業(yè)、海洋漁業(yè)和勘探行業(yè)的快速發(fā)展,海上無線通信的發(fā)展顯得愈發(fā)重要,目前海上現(xiàn)有的窄帶集群通信系統(tǒng)傳輸效率低,而現(xiàn)有的衛(wèi)星系統(tǒng)費用很高,無法滿足現(xiàn)今海上作業(yè)、搜救對于海洋通信高速率大容量的需求,因此急需發(fā)展海上寬帶通信技術(shù),電視白頻譜(TVWS)因其電磁傳播特性,傳播距離遠(yuǎn),相對帶寬較寬等優(yōu)點,可以用于海上通信組網(wǎng),提高網(wǎng)絡(luò)性能,因此建設(shè)海上寬帶通信網(wǎng)絡(luò)選擇TVWS頻段,在網(wǎng)絡(luò)規(guī)劃的過程中,準(zhǔn)確的傳播模型是合理進(jìn)行網(wǎng)絡(luò)規(guī)劃的基礎(chǔ)。本文在進(jìn)行環(huán)海南島近海海域TVWS頻譜占用度測量與分析的基礎(chǔ)上,對海面無線傳播環(huán)境特點進(jìn)行分析,研究對比了多種傳播模型的適用性,選用標(biāo)準(zhǔn)傳播模型(SPM)作為海上網(wǎng)絡(luò)規(guī)劃建設(shè)的傳播模型。SPM模型主要是為陸地電磁傳播環(huán)境開發(fā)的,為了驗證SPM模型在海上傳播的實用性,本文還選取兩個地點進(jìn)行了海上CW測試(連續(xù)波測試),并利用該實測數(shù)據(jù),用兩種方法對實測數(shù)據(jù)進(jìn)行了傳播模型校正研究：一是利用Matlab編寫的圖形用戶界面進(jìn)行模型參數(shù)的手動校正,二是利用網(wǎng)絡(luò)規(guī)劃軟件Atoll結(jié)合測量地三維電子地圖實現(xiàn)傳播模型校正,最后通過校正準(zhǔn)則驗證,兩種方法校正的傳播模型均適用于海面?zhèn)鞑キh(huán)境。
[Abstract]:With the gradual development of maritime development in the South China Sea and the rapid development of marine tourism, marine fishery and exploration industry, the development of maritime wireless communication becomes more and more important. At present, the transmission efficiency of the existing narrowband trunked communication system at sea is low. However, the existing satellite systems are very expensive and can not meet the needs of today's offshore operations. Search and rescue needs high speed and large capacity for ocean communications. Therefore, it is urgent to develop offshore broadband communication technology, and TV white spectrum TVWSs have their electromagnetic propagation characteristics. Because of the advantages of long propagation distance and wide relative bandwidth, it can be used in the offshore communication network to improve the network performance. Therefore, the construction of the offshore broadband communication network selects the TVWS frequency band, and in the process of network planning, Accurate propagation model is the basis of network planning. Based on the measurement and analysis of the TVWS spectrum occupancy in the offshore waters around Hainan Island, this paper analyzes the characteristics of the sea surface wireless propagation environment, and studies and compares the applicability of various propagation models. In order to verify the practicability of SPM model at sea, the standard propagation model (SPM) is selected as the propagation model of marine network planning and construction. The model is mainly developed for the terrestrial electromagnetic propagation environment. In this paper, the CW measurements (continuous wave measurements) are carried out at two locations, and the measured data are used. Two methods are used to study the propagation model correction of the measured data. One is the manual correction of the model parameters based on the graphical user interface written by Matlab. Second, the propagation model correction is realized by using the network planning software Atoll combined with the geodesic 3D electronic map. Finally, the calibration criteria verify that the two methods are applicable to the sea surface propagation environment.
【學(xué)位授予單位】：海南大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2016
【分類號】：TN92

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