論電磁環(huán)境的相對性與接地氣的復(fù)雜度評估
doi: 10.11999/JEIT150947
基金項目:
青島市自主創(chuàng)新重大專項基金(青科創(chuàng)14-6-1-8-ZDZX),國家863計劃(2015AA7124068A),國家973計劃(6133190102)
Relativity of Electromagnetic Environment and Down-to-earth Complexity Evaluation
Funds:
Independent Innovation Major Project Foundation of Qingdao (Qingkechuang14-6-1-8-ZDZX), The National 863 Program of China (2015AA7124068A), The National 973 Program of China (6133190102)
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摘要: 為了更加客觀地評估電磁環(huán)境復(fù)雜度及其對電子信息系統(tǒng)的影響,該文以通信系統(tǒng)為例剖析了電磁環(huán)境復(fù)雜度根源表征量 信干噪比,建立了電磁環(huán)境等級與2FSK, BPSK, QPSK, MSK, QAM數(shù)據(jù)通信系統(tǒng)性能的映射,并引入電磁環(huán)境余量和信號余量概念,給出了面向典型數(shù)據(jù)通信系統(tǒng)的電磁環(huán)境圖譜,為實現(xiàn)有用信號強度、電磁環(huán)境干擾和噪聲信號強度到電磁環(huán)境復(fù)雜度等級間轉(zhuǎn)換提供了直接途徑。以此為基礎(chǔ),研究了面向電子信息系統(tǒng)的極化量提取、實時頻譜分析技術(shù),提出了電磁環(huán)境測量評估系統(tǒng)組成,分析了其工作原理,設(shè)計了面向電子信息系統(tǒng)的電磁環(huán)境測量、評估流程。最后,利用數(shù)字仿真方式,對于應(yīng)用MSK/單極天線、64-QAM/偶極天線、QPSK/喇叭天線、2FSK/縫隙天線的4類通信系統(tǒng),分析了上述系統(tǒng)在同一電磁環(huán)境下的不同效應(yīng),其復(fù)雜度等級分別為III級,V級,IV級和II級。結(jié)果顯示,面向?qū)ο蟮碾姶怒h(huán)境要素測量可有效地獲取與電子信息系統(tǒng)相關(guān)的電磁環(huán)境分量;相同電磁環(huán)境下不同通信設(shè)備可產(chǎn)生不同效應(yīng),這充分驗證了電磁環(huán)境的復(fù)雜度具有明顯的相對性。
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關(guān)鍵詞:
- 電磁環(huán)境 /
- 復(fù)雜度圖譜 /
- 根源表征量 /
- 信干噪比 /
- 系統(tǒng)設(shè)計
Abstract: To improve the objectivity of evaluation for electromagnetic environment complexity and its influence on electronic information system, taking communication system as an example, the springhead characters of electromagnetic environment complexity, namely signal to interference and noise ratio, is analyzed. The mapping relation between electromagnetic environment grades and the performance, for different systems including 2FSK, BPSK, QPSK, MSK, and QAM is reconstructed. By putting forward electromagnetic environment margin and signal margin, the atlas of electromagnetic environment complexity for typical data communication system is provided. The atlas provides a direct conversion way from signal intensity, interference and noise intensity to the complexity of the electromagnetic environment. Based on this, polarization information extraction and real time spectrum analysis technique for electronic information system are researched. Then, the system composition for measuring and evaluating electromagnetic environment is presented and the operating principle is also analyzed. Based on computer simulation technique, different effects of four communication systems are given: the electromagnetic environment complexity for communication system using MSK and vertical monopole is III grade; that for 64-QAM and horizontal dipole is V grade; that for QPSK and horn antenna is IV grade; that for 2FSK and aperture antenna is II grade. Simulation results indicate that electromagnetic environment component for different communication systems can be effectively obtained by the above-mentioned measuring system, and electromagnetic environment has different effects on the different communication systems just as electromagnetism complexities for different targets are distinct. -
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