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36th Chinese Control and Decision Conference (CCDC)

作者： Wang, Linbo Wang, Mengyi Liu, Haopeng Zhan, Ziyi Jiang, Yong Beijing Inst Elect Syst Engn Beijing Peoples R China Changfeng Electromech Technol Design Acad Beijing Peoples R China

ISBN: (纸本)9798350387780;9798350387797

Swarm maneuverable target allocation stands as one of the most pivotal techniques in group cooperative confrontations. This article, grounded in the coverage function, employs an enhanced particle swarm algorithm to investigate the allocation and encirclement strategy for multiple aerial vehicles in cooperative counteraction against a group of mobile targets. Initially, based on the design of the encircling zone, a coverage function for multiple aerial vehicles targeting mobile objectives is crafted. Subsequently, a comprehensive objective function, incorporating threat indices and damage effectiveness, is formulated to address the collective mobile targets. Leveraging the improved particle swarm optimization algorithm, this approach allocates the group of mobile targets, effectively transforming group cooperative confrontations into a multitude of group-to-one and one-to-one challenges. Simultaneously, real-time dynamic allocation is triggered based on the coverage function, ensuring continuous target coverage by multiple aerial vehicles up to the terminal moment. Ultimately, through numerical simulations, the efficacy of this allocation and encirclement strategy is demonstrated.

关键词： coverage-based Multi-Target Dynamic Allocation Cooperative Encirclement

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Feverfew: a scalable coverage-based hybrid overlay for Internet-scale pub/sub networks

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Science China(Information Sciences) 2014年第5期57卷 51-64页

作者： MA XingKong WANG YiJie SUN WeiDong National Key Laboratory for Parallel and Distributed Processing School of ComputerNational University of Defense Technology

The publish/subscribe(pub/sub)paradigm is a popular communication model for data dissemination in large-scale distributed ***,scalability comes with a contradiction between the delivery latency and the memory *** one hand,constructing a separate overly per topic guarantees real-time dissemination,while the number of node degrees rapidly increases with the number of *** the other hand,maintaining a bounded number of connections per node guarantees small memory cost,while each message has to traverse a large number of uninterested nodes before reaching the *** this paper,we propose Feverfew,a coverage-based hybrid overlay that disseminates messages to all subscribers without uninterested nodes involved in,and increases the average number of node connections slowly with an increase in the number of subscribers and *** major novelty of Feverfew lies in its heuristic coverage mechanism implemented by combining a gossip-based sampling protocol with a probabilistic searching *** on the practical workload,our experimental results show that Feverfew significantly outperforms existing coverage-based overlay and DHT-based overlay in various dynamic network environments.

关键词： publish/subscribe coverage-based data dissemination topic-based gossip

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On species richness and rarefaction: size- and coverage-based techniques quantify different characteristics of richness change in biodiversity

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JOURNAL OF MATHEMATICAL BIOLOGY 2018年第5期77卷 1363-1381页

作者： Shimadzu, Hideyasu Loughborough Univ Technol Dept Math Sci Loughborough LE11 3TU Leics England

Changes in biodiversity today shape the future patterns of biodiversity. This fact underlines the importance of understanding changes in biodiversity through time and space. The number of species, known as species richness, has long been studied as a key indicator that quantifies the state of biodiversity, and standardisation techniques, called rarefaction, have also been used to undertake a fair comparison of the richness observed at different times or locations. The present study asks whether utilising different rarefaction techniques attains comparable results when investigating changes in species richness. The study framework presents the statistical nature of two commonly adopted rarefaction techniques: size-based and coverage-based rarefaction. The key finding is that the rarefied richness results calculated by these two different rarefaction methods reflect different aspects of biodiversity change, the shift in community size and/or composition. This fact illuminates that richness analyses based on different rarefaction techniques can reach different conclusions that may be contradictory. The study also investigates the mechanism creating such divergence. As such, special care is required when evaluating biodiversity change using species richness as an indicator.

关键词： coverage-based Rarefaction Richness Size-based Sampling Species abundance distribution (SAD)

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A 2-D coverage-based Guidance Algorithm for the Multi-stage Cooperative Interception 38

A 2-D Coverage-based Guidance Algorithm for the Multi-stage ...

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38th Chinese Control Conference (CCC)

作者： Ma, Longbiao He, Fenghua Yao, Yu Harbin Inst Technol Control & Simulat Ctr Harbin 150080 Heilongjiang Peoples R China

ISBN: (纸本)9789881563972

In this manuscript, a multi-stage cooperative interception problem is investigated in which the flight vehicles are launched successively to intercept a high maneuvering target cooperatively. We first provide the formulation of the multi-stage cooperative interception problem. Then, a coverage-based guidance algorithm is developed to obtain the expected locations of the flight vehicles by maximizing the interception probability. Moreover, the interception probability is analyzed which is related to the number of the flight vehicle and the information accuracy of the target.

关键词： 2D multi-stage cooperative coverage-based guidance algorithm

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coverage-based cooperative guidance law for intercepting hypersonic vehicles with overload constraint

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AEROSPACE SCIENCE AND TECHNOLOGY 2022年第0期126卷

作者： Liu, Shuangxi Yan, Binbin Zhang, Tong Zhang, Xu Yan, Jie Northwestern Polytech Univ Unmanned Syst Res Inst Xian 710072 Shaanxi Peoples R China Northwestern Polytech Univ Sch Astronaut Xian 710072 Shaanxi Peoples R China

This paper studies the problem of multiple interceptors with low velocity, weak maneuverability, and limited overload constraint to cooperatively intercept hypersonic vehicles under a nonlinear interception model. First, a coverage-based cooperative guidance (CBCG) law is proposed based on three concepts, i.e., interceptor reachable area, interceptor feasible area, and hypersonic vehicle escape area. Then, the relationship among the initial location of the interceptors, the parameters of the CBCG law, and the coverage area of the interceptor for intercepting the hypersonic vehicle is analyzed. Next, an allocation algorithm is designed to assign the coverage area and the initial locations of multiple interceptors. Finally, simulations are performed for intercepting the hypersonic vehicle with different maneuverabilities and maneuvering modes, and the proposed CBCG law is compared with the proportional navigation guidance (PNG) and sliding mode control guidance (SMCG) laws. The simulation results show that the proposed CBCG law can ensure that at least one interceptor can accurately intercept the hypersonic vehicle, giving full play of the scale advantage of low-cost interceptors. And the guidance robustness can be guaranteed in the presence of measurement errors. (C) 2022 Elsevier Masson SAS. All rights reserved.

关键词： coverage-based Cooperative guidance law Overload constraint Hypersonic vehicles

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Semantic Sensitive coverage-based Fuzzing

Semantic Sensitive Coverage-based Fuzzing

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2017 2nd International Conference on Communications, Information Management and Network Security (CIMNS2017)

作者： Jun LI Chao ZHANG Tsinghua University

coverage-based fuzzing is widely used in finding program bugs. While state-of-the-art coverage-based fuzzers, either ignore the differences between newly discovered edges or consider only control flow features(e.g., depth) when prioritizing seeds for mutation. In this paper, we propose a semantic sensitive coverage-based fuzzing solutions, SSFuzzer. When new edges are discovered during fuzzing, it evaluates the semantic features of the new edges and update the weights of testcases. Seeds with heavier weights will first be picked to mutate and be given more energy to mutate(i.e., more testcases will be generated). We evaluate not only positive semantic features(e.g., memory access) but also negative ones(e.g., error handling) of edges. We implemented a prototype based on AFL. Experiment results demonstrate that SSFuzzer can discover vulnerabilities faster.

关键词： Fuzzing coverage-based Semantic sensitive Software security

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A 2-D coverage-based Guidance Algorithm for the Multi-stage Cooperative Interception

A 2-D Coverage-based Guidance Algorithm for the Multi-stage ...

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第三十八届中国控制会议

作者： Longbiao Ma Fenghua He Yu Yao Control and Simulation Center Harbin Institute of Technology

关键词： 2D multi-stage cooperative coverage-based guidance algorithm

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