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<title cf:type="text"><![CDATA[Editorial department of the Journal of National University of Defense Technology -->陆军工程大学]]></title>
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<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Effect of microwave pulse on the carrier-to-noise ratio of navigation receiver tracking loops]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202304019]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[To clarify the optimal interference parameters of microwave pulses to navigation receivers, by analyzing theoretically the tracking loop correlation processing of navigation receiver under microwave pulse interference, a interference classification method was proposed on the basis of the relationship between microwave pulse spectral lines, spread spectrum code spectral lines and coherent integration time, the correlation output power and carrier-to-noise ratio under microwave pulse interference with different parameters was further derived, finally experimental verification was carried out. Theoretical analysis and experimental results show that when the microwave pulse width is greater than or equal to the spreading code period and less than the coherent integration time, a spreading code spectral line is interfered with multiple microwave pulse spectral lines which enters the bandwidth of the coherent integrator, the microwave pulse has the best interference effect on navigation receivers, and is better than continuous wave interference; with the increase of the number of interference spectral lines, the correlation output power is increased, the carrier-to-noise ratio is decreased, and the interference effect is enhanced.]]></description>
<pubDate>2023/7/20 16:28:59</pubDate>
<category><![CDATA[陆军工程大学]]></category>
<author><![CDATA[ZHAO Min, ZHOU Xing, CHEN Yazhou]]></author>
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<atom:name>ZHAO Min, ZHOU Xing, CHEN Yazhou</atom:name>
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<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Online evolution method of parallel simulation model for equipment life prediction]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202304020]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[Based on the research of parallel simulation technology for equipment remaining life prediction, the state equations under different degradation states was unified, the construction method of prediction model library and the selection algorithm of predictive model morphological were proposed, and the online model evolution workflow of “model morphology library construction—model selection—data assimilation—model evolution” was designed. Using extended Kalman filter and maximum likelihood estimation algorithm, the online dynamic evolution of parallel simulation model for equipment remaining life prediction was realized. The effectiveness of the model morphology selection algorithm and the model online evolution workflow is verified by simulation experiments, and good simulation results are obtained.]]></description>
<pubDate>2023/7/20 16:28:59</pubDate>
<category><![CDATA[陆军工程大学]]></category>
<author><![CDATA[DI Yanqiang, LI Ting, FENG Shaochong, LIU Qiongyao]]></author>
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<atom:name>DI Yanqiang, LI Ting, FENG Shaochong, LIU Qiongyao</atom:name>
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