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21.
基于动态贝叶斯网络的弹道导弹态势评估模型研究   总被引:1,自引:0,他引:1  
针对弹道导弹态势评估的特点,分析了弹道导弹的作战过程和弹道导弹主动段作战特点。在此基础上,给出了动态贝叶斯网络用于弹道导弹态势评估的建模过程,建立了基于动态贝叶斯网络的弹道导弹态势评估模型,并依据观测到的数据对模型进行了仿真,结果表明,将动态贝叶斯网络应用于弹道导弹的态势评估模型是可行的,该模型能够对飞行中的弹道导弹态势快速准确作出评估。  相似文献   
22.
为发挥鱼雷的作战效能,提出潜射鱼雷有利相遇态势的概念,指出当一次转角射击不能满足鱼雷以有利相遇态势接近并发现目标时,各种自导方式的鱼雷均需要二次转角射击。在给出二次转角射击时机、解算模型的基础上,着重对预定相遇态势射击的关键----二次转向点的选择问题进行了系统研究,引入基于鱼雷自导探测距离的二次转向点与预定相遇点之间距离的选择方法,使得二次转向点的选择更具合理性和针对性,且适用于包括直航鱼雷在内的各种鱼雷。  相似文献   
23.
分区协作是实现桌面协作形式的态势感知的方法之一。本文提出了分区协作的实现模式,描述了三类分区:存储区、私人区与公共区,然后给出了分区协作的实现机制,包括多触摸点处理机制、显示管理机制和冲突处理机制,最后实现了基于分区协作的态势感知平台,并进行了对比试验验证。  相似文献   
24.
Many manufacturers sell their products through retailers and share the revenue with those retailers. Given this phenomenon, we build a stylized model to investigate the role of revenue sharing schemes in supply chain coordination and product variety decisions. In our model, a monopolistic manufacturer serves two segments of consumers, which are distinguished by their willingness to pay for quality. In the scenario with exogenous revenue sharing ratios, when the potential gain from serving the low segment is substantial (e.g., the low‐segment consumers' willingness to pay is high enough or the low segment takes a large enough proportion of the market), the retailer is better off abandoning the revenue sharing scheme. Moreover, when the potential gain from serving the low (high) segment is substantial enough, the manufacturer finds it profitable to offer a single product. Furthermore, when revenue sharing ratios are endogenous, we divide our analysis into two cases, depending on the methods of cooperation. When revenue sharing ratios are negotiated at the very beginning, the decentralized supply chain causes further distortion. This suggests that the central premise of revenue sharing—the coordination of supply chains—may be undermined if supply chain parties meticulously bargain over it.  相似文献   
25.
In complex operations such as the interventions in Iraq and Afghanistan, where multiple government ministries are involved in putting together a state’s contributions, the use of national-level coordination bodies has become more widespread. Research has taken for granted that the rationale behind these bodies reflects their declared aim – enhanced coordination as a means to improve mission effectiveness. However, they appear to have had modest effect on coordination. That notwithstanding, they seem to remain popular. This prompts us to ask why such bodies are actually established. This article – based on in-depth interviews and archival records – critically explores the establishment of Norway’s ad hoc, inter-ministerial, political-level Afghanistan Forum. Distinguishing between a structural-instrumental, a cultural-institutional and an environmental perspective from organizational theory to structure the analysis, this article shows that the declared purpose of the forum, inter-ministerial coordination, proved less important than showcasing coordination efforts and keeping the coalition together. In addition, national traditions in handling coordination challenges in the central government apparatus and powerful international reforms helped bring the forum about. This has implications for research on the rationale and effectiveness of these bodies, and also for understanding their policy relevance.  相似文献   
26.
谷康  李亚明  刘平 《国防科技》2018,39(2):078-081,090
当前,智能化武器装备成为世界各国发展的重点,而电子对抗作为新型作战力量将直接影响战争的胜负。文章分析当前电子对抗装备存在的显著不足,论证发展智能化电子对抗装备的迫切性和必要性,明确提出发展智能化电子对抗装备的若干关键技术,阐述智能化电子对抗装备对未来信息化战争的直接影响,以及智能化电子对抗装备未来的发展方向。  相似文献   
27.
Considering a supply chain with a supplier subject to yield uncertainty selling to a retailer facing stochastic demand, we find that commonly studied classical coordination contracts fail to coordinate both the supplier's production and the retailer's procurement decisions and achieve efficient performance. First, we study the vendor managed inventory (VMI) partnership. We find that a consignment VMI partnership coupled with a production cost subsidy achieves perfect coordination and a win‐win outcome; it is simple to implement and arbitrarily allocates total channel profit. The production cost subsidy optimally chosen through Nash bargaining analysis depends on the bargaining power of the supplier and the retailer. Further, motivated by the practice that sometimes the retailer and the supplier can arrange a “late order,” we also analyze the behavior of an advance‐purchase discount (APD) contract. We find that an APD with a revenue sharing contract can efficiently coordinate the supply chain as well as achieve flexible profit allocation. Finally, we explore which coordination contract works better for the supplier vs. the retailer. It is interesting to observe that Nash bargaining solutions for the two coordination contracts are equivalent. We further provide recommendations on the applications of these contracts. © 2016 Wiley Periodicals, Inc. Naval Research Logistics 63: 305–319, 2016  相似文献   
28.
随着无人机装备的快速普及,自主控制技术越来越成为提高无人机系统生存能力、适应能力和任务完成能力的重要因素。通过对无人机实战场景和使用需求的分析,提出近期对自主控制技术应用的重要需求是提高无人机感知能力和对故障及飞行状态的适应性。分析了当前自主控制技术在外部态势、内部态势和适应性飞行控制方面的研究和应用现状。最后,根据对应用需求的分析和当前相关技术的发展应用情况的考察,提出了无人机适应性自主控制的技术框架。  相似文献   
29.
战场态势是控制作战节奏、把握战斗进程的重要手段。借鉴组件化建模的思想,采用组件组合描述态势要素的方式,提出了一种崭新的战场态势表达模型。该模型构建了以态势图层为中心的管理机制、以“态”表达组件和“势”表达组件进行组合描述态势要素的建模机制和以图层服务为手段的功能扩展机制,可以显著增强战场态势显示的灵活性和提高系统功能的可扩展性。  相似文献   
30.
联合作战是现代战争的主要作战形式,参与联合作战的平台之间需要进行情报共享,形成协同一致的战场态势图。重点研究了Link16在分布式多平台之间实现态势一致性的机制,分析了其总体思路、采用的处理流程和方法、使用的消息种类、存在的问题和不足,并结合我军实际,提出了分布式多平台态势一致性的系统架构和实现方法。  相似文献   
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