本文選題：電磁兼容　切入點：車載通信電臺　出處：《西安電子科技大學(xué)》2014年碩士論文

【摘要】：隨著現(xiàn)代通信技術(shù)的發(fā)展,車載通信系統(tǒng)上裝的電子設(shè)備,尤其是無線通信電臺的數(shù)量日益增加,這就使得電臺間的產(chǎn)生的干擾程度越發(fā)嚴(yán)重。因此,如何在系統(tǒng)設(shè)計階段,評估預(yù)測車載通信電臺間的干擾程度,對系統(tǒng)的用頻計劃及上裝設(shè)備規(guī)模有較為明確的把握成為亟待解決的問題。本文根據(jù)車載通信系統(tǒng)電磁兼容研究的需求及通信系統(tǒng)的性能特點,結(jié)合電臺間的通信原理,針對車載通信系統(tǒng)中電臺間的干擾,建立了干擾概率計算模型。首先,在已有車載通信電臺間電磁干擾研究的基礎(chǔ)上,對共址通信系統(tǒng)與多車車際間通信系統(tǒng),進(jìn)行了分析總結(jié)。并在基于信納德(SINAD)模型計算干擾帶寬的方法上提出了等效干擾帶寬的概念,為電臺間干擾概率的計算提供依據(jù)。然后,分析了電臺間的鄰道干擾與諧波干擾的特點,將其從頻域上分為同頻段干擾與不同頻段干擾兩種情況,建立了鄰道干擾概率模型與諧波干擾概率模型。隨后從數(shù)學(xué)計算的角度出發(fā),分析了鄰道與諧波干擾概率計算模型之間的聯(lián)系,綜合考慮兩種干擾類型的影響,建立了綜合干擾概率計算模型。在各電臺的工作狀態(tài)相互獨立且工作頻率等概率分布于各自頻段內(nèi)這一假設(shè)條件下,將一對一綜合干擾概率計算方法擴展至多對一干擾的情況,建立了多對一綜合干擾概率模型。并在此基礎(chǔ)上,以HF電臺與VHF電臺間的干擾情況為例進(jìn)行了仿真分析。最后,在上述分析的基礎(chǔ)上,編制了車載通信電臺間干擾概率預(yù)測分析軟件的部分模塊,并對軟件的總體設(shè)計和界面進(jìn)行了介紹。
[Abstract]:With the development of modern communication technology, the number of electronic equipment installed on vehicle communication system, especially wireless communication stations, is increasing day by day, which makes the interference between stations become more and more serious. To assess and predict the degree of interference between vehicular communication stations, It is an urgent problem to grasp the frequency plan of the system and the scale of the upper equipment. According to the requirements of the electromagnetic compatibility research of the vehicle communication system and the characteristics of the communication system, this paper combines the communication principle between the stations. The interference probability calculation model is established for the interference between the stations in the vehicle communication system. Firstly, on the basis of the research on the electromagnetic interference between the existing vehicle communication stations, the co-address communication system and the multi-vehicle inter-vehicle communication system are studied. The concept of equivalent interference bandwidth is put forward on the basis of the method of calculating interference bandwidth based on SINADM model, which provides the basis for the calculation of interference probability between stations. The characteristics of adjacent channel interference and harmonic interference between radio stations are analyzed, which are divided into two kinds of interference in frequency domain: the same frequency band interference and the different frequency band interference. The probability model of adjacent channel interference and the probability model of harmonic interference are established. Then, from the point of view of mathematical calculation, the relationship between adjacent channel and harmonic interference probability model is analyzed, and the influence of two kinds of interference types is considered synthetically. Under the assumption that the working state of each radio station is independent and the working frequency is distributed in its own frequency band, the one-to-one comprehensive interference probability calculation method is extended to the case of many-to-one interference. A many-to-one comprehensive interference probability model is established. On this basis, the interference between HF radio station and VHF radio station is simulated and analyzed. Finally, based on the above analysis, the interference between HF radio station and VHF radio station is simulated and analyzed. Some modules of the software for prediction and analysis of interference probability between vehicle communication stations are developed, and the overall design and interface of the software are introduced.
【學(xué)位授予單位】：西安電子科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TN911.4

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相關(guān)碩士學(xué)位論文 前1條

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本文編號：1688524