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本文提出了一种基于目标斜距两次测量值之差和方位角信息的定位跟踪算法,详细分析了该技术的定位原理和可行性。在辐射源匀速直线运动的条件下,如果能够不测俯仰角而只用方位角和距离差实现对目标的定位与跟踪,将不仅可以简化接收站的设备,而且还能够增强其独立性能,因此本文讨论的算法对于单站被动定位跟踪系统的实用性具有重要意义。本文通过典型目标航迹的计算机仿真,对算法的性能做了评估. 相似文献
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基于文[10]中的理论,我们用Turbo─prolog编程,在386微机上成功地实现了命题时态逻辑定理的证明器。该证明器在处理next幂次、归纳、归结、◇(x∧y)、until 等方面,均有独到之处。这些方面,克服了以往工作的不足。证明器界面友好、速度快、能力强。 相似文献
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根据弹性薄板微分方程的一般解和边界条件的配点法来求四边搁支板的弯曲问题,并以对称荷载作用下的正方形板为例进行了分析计算。 相似文献
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文中给出了计算空间目标和诱饵表面温度场的方法,比较了目标和诱饵表面温度特性的差异,指出了这些差异对点目标自动识别的重要意义。 相似文献
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The assignment of personnel to teams is a fundamental managerial function typically involving several objectives and a variety of idiosyncratic practical constraints. Despite the prevalence of this task in practice, the process is seldom approached as an optimization problem over the reported preferences of all agents. This is due in part to the underlying computational complexity that occurs when intra-team interpersonal interactions are taken into consideration, and also due to game-theoretic considerations, when those taking part in the process are self-interested agents. Variants of this fundamental decision problem arise in a number of settings, including, for example, human resources and project management, military platooning, ride sharing, data clustering, and in assigning students to group projects. In this article, we study an analytical approach to “team formation” focused on the interplay between two of the most common objectives considered in the related literature: economic efficiency (i.e., the maximization of social welfare) and game-theoretic stability (e.g., finding a core solution when one exists). With a weighted objective across these two goals, the problem is modeled as a bi-level binary optimization problem, and transformed into a single-level, exponentially sized binary integer program. We then devise a branch-cut-and-price algorithm and demonstrate its efficacy through an extensive set of simulations, with favorable comparisons to other algorithms from the literature. 相似文献
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针对全球定位系统在信号失锁条件下与航位推算组合导航的系统误差快速累积问题,提出一种基于压缩扩展卡尔曼滤波的同时定位与制图的辅助的全球定位系统/航位推算组合导航方法。该方法利用同时定位与辅助实现运动平台在全球定位系统信号无效时连续稳定导航,抑制航位推算定位误差的累积,并利用全球定位系统定位结果校正同时定位与辅助制图误差,减小地图的不确定性。设计基于压缩扩展卡尔曼滤波的同时定位与辅助/全球定位系统组合滤波器,实现大尺度环境下同时定位与辅助/全球定位系统的实时解算。真实实验数据计算结果分析表明,相对于同时定位与辅助定位结果,同时定位与辅助的全球定位系统/航位推算组合导航可有效提高系统定位性能,使得制图精度提高10m。 相似文献
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Why should deployment affect re‐enlistment? In our model, members enter the military with naïve beliefs about deployment and use actual deployment experience to update their beliefs and revise their expected utility of re‐enlisting. Empirically, re‐enlistment is related to the type and number of deployments, consistent with the learning model. Non‐hostile deployment increases first‐term re‐enlistment but hostile deployment has little effect except for the Army, where the effect is positive. Both types increase second‐term re‐enlistment. Interestingly, first‐term members with dependants tend to respond to deployment like second‐term members. In addition, deployment acts directly to affect re‐enlistment, not indirectly through time to promotion. 相似文献
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Jean‐Paul Azam † 《Defence and Peace Economics》2013,24(4):343-364
We model an oppressor aiming at victimizing an excluded group in his country, with two main variants. A foreign power affects his behaviour using either conditional aid, subject to the dictator’s participation constraint, or the threat of sanctions, broadly defined, subject to the credibility constraint. The choice between the two is either determined by the latter, or by their relative cost. Aid is preferred when the threat of sanctions is ineffective, and sanctions are too expensive. Sanctions might be imposed, if the threat is ineffective. A case study of the Iraqi Kurds after Iraq was subject to sanctions is presented. 相似文献