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<title cf:type="text"><![CDATA[Editorial department of the Journal of National University of Defense Technology -->Control Science and Engineering·Aeronautical and Astronautical Science and Technolog]]></title>
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<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Integrated assignment of satellite-station/inter-satellite links for the BDS]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/20250419]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[In order to solve the problem of lacking of time and space references of the autonomous navigation satellite constellation relying on inter-satellite links, the BeiDou satellite navigation system has introduced ground anchor stations which jointly constitute an integrated satellite-station network with the space satellites. With the constraints of inter-satellite link system, visibility and load quantity, the integrated assignment model of satellite-station/inter-satellite links was established. The shortest information transfer link assignment algorithm based on network layers, and the multi-objective optimization algorithm of ranging link PDOP（position dilution of precision）and network connectivity based on the simulated annealing algorithm were proposed. According to the simulation results, the reference information from the anchor station can be distributed to satellites with the fewest link hops. The PDOP of satellite ranging links is less than 1.4 and close to the lower limitation. The connectivity of the integrated network is better than 3. It is demonstrated that the integrated assignment algorithm can satisfy the requirements of fast information distribution from the anchor station to satellites, ranging for space reference maintenance and network robustness.]]></description>
<pubDate>2025/7/23 0:00:00</pubDate>
<category><![CDATA[Control Science and Engineering·Aeronautical and Astronautical Science and Technolog]]></category>
<author><![CDATA[WANG Nan, SUN Leyuan, NIU Yifeng, HUANG Wende]]></author>
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<atom:name>WANG Nan, SUN Leyuan, NIU Yifeng, HUANG Wende</atom:name>
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<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Effect of mechanical properties and temperature on impact ignition of PTFE/Al reactive material]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/20250420]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[To investigate the mechanical properties of PTFE/Al (polytetrafluoroethylene/aluminum) reactive materials and temperature effects on their impact ignition behavior, eight PTFE/Al reactive material specimens were fabricated through controlled sintering conditions. Stress-strain curves of eight samples at varying temperatures were obtained by using a universal testing machine, while impact ignition thresholds of eight samples under corresponding temperatures were determined through drop-weight experiments. Experimental results demonstrated that sintering duration significantly influenced the elastic modulus of PTFE/Al composites, with elevated temperatures inducing material softening. At high-temperature conditions, specimens sintered for 40 min exhibited enhanced yield strength and demonstrated higher reactivity under drop-weight loading. Further analysis revealed a linear negative correlation between material strength and impact ignition thresholds under isothermal conditions, with the slope of this linear relationship exhibiting exponential decay as temperature increased. The findings of this study provide a significant theoretical foundation for the performance optimization and engineering applications of PTFE/Al reactive materials.]]></description>
<pubDate>2025/7/23 0:00:00</pubDate>
<category><![CDATA[Control Science and Engineering·Aeronautical and Astronautical Science and Technolog]]></category>
<author><![CDATA[ZHOU Jingyuan, LEI Siyang, RAN Xianwen, TANG Wenhui]]></author>
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<atom:name>ZHOU Jingyuan, LEI Siyang, RAN Xianwen, TANG Wenhui</atom:name>
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<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Partial-CLEAN integration algorithm for aeroacoustics source region]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/20250421]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[Source region integration algorithm is a kind of data processing method to extract noise characteristics of each component in wind tunnel test model. To solve the interference problem of integration results caused by sound source sidelobe outside the target integration, a partial-CLEAN integration algorithm was proposed. This algorithm divided the model region into target and non-target regions, and used the CLEAN algorithm to find the strongest sound source positions at each frequency point in the non-target region. It iteratively removed interference from non-target region sound sources on the target region, thereby achieving more accurate integral results. Through simulation and wind tunnel test data analysis, the algorithm can effectively separate mutually interfering noise sources, especially sound sources of 3 kHz and below, extract more accurate target sound sources, and provide a new tool for aerodynamic noise analysis.]]></description>
<pubDate>2025/7/23 0:00:00</pubDate>
<category><![CDATA[Control Science and Engineering·Aeronautical and Astronautical Science and Technolog]]></category>
<author><![CDATA[ZHAO Jiashan, FAN Zhenglei, ZHANG Junlong]]></author>
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<atom:name>ZHAO Jiashan, FAN Zhenglei, ZHANG Junlong</atom:name>
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<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Improve NSGA-Ⅲ algorithm for optimizing equipment utilization]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/20250422]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[Considering the practical needs of equipment utilization, equipment preparedness, and the efficiency of equipment maintenance, the relationship between equipment utilization and maintenance was analyzed. A multi-objective optimization model aimed at maximizing equipment presence rate, equipment motor-hour reserve compliance rate, equipment availability rate, and minimizing equipment maintenance costs was established, with the constraint of balancing the revenue and expenditure of motor hours. Given the high-dimensional and large-scale difference characteristics of the established models objectives, an improved NSGA-Ⅲ algorithm was designed, which proposed the crossover and mutation evolutionary operations based on DNA, to enhance the evolutionary efficiency of the population. An adaptive normalization method was improved to enhance the population diversity and algorithm convergence speed. Taking the annual equipment utilization optimization as an example, comparative experiments were conducted, which verified the feasibility and efficiency of the proposed model and algorithm. By analyzing the trend of objective function values for a large number of equipment utilization plans and the detailed indicators of plans that achieve extreme values for single objectives, different preference-based equipment utilization optimization plans were proposed.]]></description>
<pubDate>2025/7/23 0:00:00</pubDate>
<category><![CDATA[Control Science and Engineering·Aeronautical and Astronautical Science and Technolog]]></category>
<author><![CDATA[SONG Weixing, WU Gaiyin, MENG Lingzhou]]></author>
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<atom:name>SONG Weixing, WU Gaiyin, MENG Lingzhou</atom:name>
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