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For the case that two pursuers intercept an evasive target, the cooperative strategies and state estimation methods taken by pursuers can seriously affect the guidance accuracy for the target, which performs a bang For the case that two pursuers intercept an evasive target, the cooperative strategies and state estimation methods taken by pursuers can seriously affect the guidance accuracy for the target, which performs a bang-bang evasive maneuver with a random switching time. Combined Fast multiple model adaptive estimation (Fast MMAE) algorithm, the cooperative guidance law takes detection configuration affecting the accuracy of interception into consideration. Introduced the detection error model related to the line-of-sight (LOS) separation angle of two interceptors, an optimal cooperative guidance law solving the optimization problem is designed to modulate the LOS separation angle to reduce the estimation error and improve the interception performance. Due to the uncertainty of the target bang-bang maneuver switching time and the effective fitting of its multi-modal motion, Fast MMAE is introduced to identify its maneuver switching time and estimate the acceleration of the target to track and intercept the target accurately. The designed cooperative optimal guidance law with Fast MMAE has better estimation ability and interception performance than the traditional guidance law and estimation method via Monte Carlo simulation. 相似文献
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Satellite constellation design for forest fire monitoring via a stochastic programing approach 下载免费PDF全文
There is significant value in the data collected by satellites during and after a natural disaster. The current operating paradigm in practice is for satellites to passively collect data when they happen to fly over a disaster location. Conversely, this article considers the alternative approach of actively maneuvering satellites to fly directly overhead of the disaster site on a routine basis. Toward this end, we seek to compute a satellite constellation design that minimizes the expected maneuver costs for monitoring an unknown forest fire. In this article, we present a 2‐stage stochastic programing model for this problem as well as a accelerated L‐shaped decomposition approach. A comparison between our approach and the current operating paradigm indicates that our solution provides longer duration data collections and a greater number of data collections. Analysis also shows that our proposed solution is robust over a wide array of scenarios. 相似文献
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破损潜艇应急起浮操纵控制研究 总被引:2,自引:1,他引:2
在建立高压气应急吹除模型的基础上,通过计算机模拟仿真对高压气吹除过程中计算型潜艇应急上浮的主要参数进行计算和分析,给出了艏部破损和舯部破损时操纵安全界限图中的进水限制线,提高了潜艇应急上浮操纵的安全性. 相似文献
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本文详细地讨论了再入机动弹头的速度控制问题。根据优化原理找到了对固定目标进行攻击的最优制导规律,讨论了理想速度曲线的设计方法,以及具体实施减速控制的方法。仿真计算表明,对落速控制的精度是较高的。 相似文献