共查询到16条相似文献,搜索用时 10 毫秒
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微分代数控制问题的数值计算方法 总被引:3,自引:0,他引:3
费景高 《系统工程与电子技术》1992,(6)
描述许多轨道控制问题的方程通常构成非线性半显式的微分代数系统。本文提出一些数值方法来计算这些控制问题的控制规律。对于一个模型问题,本文进行了稳定性分析,并且给出了稳定性区域。文中估计了这些方法的全局误差,它们给出控制误差与计算步长的关系。 相似文献
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Parallel Digital Simulation for the Control Problem in Differential Algebraic System 总被引:2,自引:0,他引:2
《系统工程与电子技术(英文版)》1996,(4)
Parallel Digital Simulation for the Control Problem in Differential Algebraic SystemChenLirong&LiuDegui(BeijingInstituteofCom... 相似文献
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运动目标的红外成像模型及其绘制 总被引:2,自引:0,他引:2
运动目标红外图像的真实感生成一向是红外场号生成中的难点。首先提出了一个运动目标的红外成像模型,它不仅结合了各种环境影响、目标表面几何形状、结构、热特性等因素,还考虑到内部热状态、以及目标在高速运动状态下的气动加热效果。另外,还设计了适用于红外图像的绘制方法,以提高红外图像的真实感效果并简化程序。在考虑到大气传输和传感器噪声对红外成像的影响后,给出了不同视点的运动目标的红外图像。从实验结果看,该模型及方法模拟效果真实,算法可靠。 相似文献
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Chen Huaming Sun Guangfu Lu Huanzhang & Chang Qing ATR Lab. National University of Defense Technology Changsha P. R. China 《系统工程与电子技术(英文版)》2002,13(4)
This paper describes a new method of small moving target detection and analyzes the performance of this algorithm. The method is based on multi-level threshold decision-making and sliding trajectory confidence testing technology. The parameters of the algorithm are also given. Experiments have been conducted, the results show that the algorithm has advantages of high detection probability, simple structure, and excellent real-time performance. 相似文献
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Li Qinghua 《系统工程与电子技术(英文版)》1996,(3)
SearchAlgorithmforDeterminingtheRangeofthePossibleCollisionofConverPolygons¥LiQinghua(DepartmentofComputerScienceandEngineeri... 相似文献
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研究建立一套快速可靠的双目标自动狩猎决策系统,并从可靠性和实用性角度讨论此系统的实际运行方法. 相似文献
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本文针对上层为单目标,下层为多目标的两人两层决策问题,建立了它的数学模型和决策机制,然后将其转化为单层的非凸优化问题。采用外部逼近算法求解此非凸优化问题的全局最优解,这为两层决策问题提供了一种求解的途径,同时为该类问题的决策支持系统的研究是有意义的。 相似文献
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Kin Keung LAI Jun MA Shouyang WANG 《系统科学与复杂性》2006,19(3):340-351
This paper studies one managerial decision problem of the auction sites: how to combine penalties with commissions? It is shown that when there exists secondary auction market, the auction whose penalty is a linear function of the seller's commission will be more efficient than the auction with only commissions but no penalties. It has also been proven that using this strategy can maximize the expected revenue for the seller, the auction site and their total expected revenues. 相似文献
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QIU Qiusheng Department of Mathematics Physics Wuyi University Jiangmen Guangdong 《系统科学与系统工程学报(英文版)》1998,(2)
1IntroductionTheconceptoftheeficientpointplaysanimportantroleinstudyingvectoroptimiza-tionproblem.AsobservedbyKuhnandTuckeran... 相似文献
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Qian LIU Changyu WANG Xinmin YANG 《系统科学与复杂性》2006,19(3):423-430
For unconstrained optimization, a new hybrid projection algorithm is presented m the paper. This algorithm has some attractive convergence properties. Convergence theory can be obtained under the condition that Δ↓f(x) is uniformly continuous. If Δ↓f(x) is continuously differentiable pseudo-convex, the whole sequence of iterates converges to a solution of the problem without any other assumptions. Furthermore, under appropriate conditions one shows that the sequence of iterates has a cluster-point if and only if Ω* ≠ θ. Numerical examples are given at the end of this paper. 相似文献
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本文针对红外自动寻的末制导系统提出了一种适合于检测星空背景下的远距离点目标的快速算法,它可用于检测静止不动、匀速运动和机动运动的点目标。该算法通过构造一个关于3D空间中数据集的轨迹表达的总代价函数将点目标轨迹提取问题转化成为总代价函数对目标参量的最优化问题,通过迭代算法实现这个最优化,文章证明了算法的收敛性,并估算了该检测算法的检测性能,实验表明该方法适合于小SNR时的点目标检测。 相似文献
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Song Liuping Sun ZhongkangDept. of Electronic Eng.. National Univ. of Defense Technology Changsha P.R.China 《系统工程与电子技术(英文版)》1993,(3)
: Three-dimensional (3-D) matched filtering has been suggested as a powerful processing technique for detecting weak, moving IR point target immersed in a noisy Held. Based on the theory of the 3-D matched filtering and the optimal linear processing, the optimal point target detector is being analyzed in this paper. The performance of the detector is introduced in detail. The results provide a standard reference to evaluate the performance of any other point target detection algorithms. 相似文献
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本文在第一部分的基础上进一步介绍稀布阵综合脉冲孔径雷达(SIAR)在强干扰背景下对目标的距离、方位和仰角进行精确测量与跟踪的方法,通过计算机模拟证明了该方法的有效性。 相似文献