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排序方式: 共有236条查询结果,搜索用时 31 毫秒
1.
Investigations were performed on a group utilizing (General Purpose Unit) GPU and executions were evaluated for the utilization of the created parallel
usages to process satellite pictures from satellite Landsat7.The usage on a realistic group gives execution change from 2 to 18 times. The nature of the
considered techniques was assessed by relative dimensionless global error in synthesis (ERGAS) and Quality Without Reference (QNR) measurements. The
outcomes demonstrate execution picks ups and holding of value with the bunch of GPU contrasted with the outcomes and different analysts for a CPU and
single GPU. The errand of upgrading the view of a scene by combining data caught from various picture sensors is usually known as multisensor picture
combination. This paper displays a territory based picture combination calculation to consolidate SAR (Synthetic Aperture Radar) and optical pictures. The
co-enlistment of the two images is first led utilizing the proposed enrollment method prior to picture combination. The paper displays a parallel execution of
existing picture combination techniques on a graphical group. Parallel executions of techniques in view of discrete wavelet changes are created. Division
into dynamic and motionless regions is then executed on the SAR surface picture for particular injection of the SAR picture into panchromatic (PAN) picture.
An integrated image in view of these two pictures is produced by the novel region based combination plot, which forces diverse combination rules for each
fragmented region. At long last, this picture is melded into a multispectral(MS) picture through the half breed skillet honing technique proposed in past
research. Exploratory outcomes exhibit that the proposed strategy demonstrates preferred execution over different fusion algorithms and can possibly be
connected to the multisensory combination of SAR and optical pictures. 相似文献
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纯方位单站目标被动跟踪需要观测站作机动才能满足可观测条件,导致跟踪算法收敛时间较长。基于纯方位多站被动跟踪算法可以解决算法收敛时间较长的问题,文中提出了一种约束最小二乘算法用于纯方位多站被动跟踪,它首先为最小二乘算法引入约束条件,利用矩阵最小特征值所对应的特征向量,解决了EKF 算法需要初值的问题,避免了滤波的发散,同时也极大地减小了最小二乘估计的偏置。仿真表明,这种算法能够渐进地逼近估计误差的下限,并且其精度有所增加,是一种渐进、稳定以及近似无偏的估计算法。 相似文献
4.
Yuan Gao Chen‐Jian Ran Xiao‐Jun Sun Zi‐Li Deng 《International Journal of Adaptive Control and Signal Processing》2010,24(11):982-1004
For the multisensor linear discrete time‐invariant stochastic systems with unknown noise variances, using the correlation method, the information fusion noise variance estimators with consistency are given by taking the average of the local noise variance estimators. Substituting them into two optimal weighted measurement fusion steady‐state Kalman filters, two new self‐tuning weighted measurement fusion Kalman filters with a self‐tuning Riccati equation are presented. By the dynamic variance error system analysis (DVESA) method, it is rigorously proved that the self‐tuning Riccati equation converges to the steady‐state optimal Riccati equation. Further, by the dynamic error system analysis (DESA) method, it is proved that the steady‐state optimal and self‐tuning Kalman fusers converge to the global optimal centralized Kalman fuser, so that they have the asymptotic global optimality. Compared with the centralized Kalman fuser, they can significantly reduce the computational burden. A simulation example for the target tracking systems shows their effectiveness. Copyright © 2010 John Wiley & Sons, Ltd. 相似文献
5.
Shu‐Li Sun Jing Ma Nan Lv 《International Journal of Adaptive Control and Signal Processing》2008,22(10):932-948
Based on the optimal fusion estimation algorithm weighted by scalars in the linear minimum variance sense, a distributed optimal fusion Kalman filter weighted by scalars is presented for discrete‐time stochastic singular systems with multiple sensors and correlated noises. A cross‐covariance matrix of filtering errors between any two sensors is derived. When the noise statistical information is unknown, a distributed identification approach is presented based on correlation functions and the weighted average method. Further, a distributed self‐tuning fusion filter is given, which includes two stage fusions where the first‐stage fusion is used to identify the noise covariance and the second‐stage fusion is used to obtain the fusion state filter. A simulation verifies the effectiveness of the proposed algorithm. Copyright © 2008 John Wiley & Sons, Ltd. 相似文献
6.
在对序贯Kalman滤波在多传感器多目标跟踪中的应用情况进行分析之后,提出了一种基于费歇信息增量的多传感器对多目标的分配方法.该方法较好地解决了传感器的组合分配问题,并能对目标的跟踪精度实施控制,仿真结果证明了该方法的有效性. 相似文献
7.
目前公共场所的电器设备多、使用时间长、缺乏控制、耗电大,为此设计了一种基于多传感器信息融合的节能控制系统.从目前存在的问题、系统总体框架、实现及实验结果几方面进行了探讨.系统采用闭环控制,以传感器检测的信号为反馈信息,并行输入CPU中进行决策层的信息融合,再并行输出多路信号动态控制设备的运行,达到了节能目的,具有较高的准确性、快速性和稳定性.实验表明,该节能控制系统满足设计要求,已在某客运站房的节能控制中得到应用. 相似文献
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多传感器信息融合测控体系在温室测控中的应用研究 总被引:1,自引:0,他引:1
对农作物生长环境的温度、湿度和光照等参数的实时监测和远程控制是农业生产现代化的重要手段,为此设计了一种以ARM嵌入式微处理器2410为硬件平台,结合Linux操作系统和ADS1.2集成开发环境,同时采用D-S证据理论和BP神经网络相结合算法的多传感器信息融合测控系统。BP神经网络提供一定数量的证据,D-S证据理论降低证据的不确定性,将这种基于二者的多传感器信息融合算法应用于农作物生长环境监控中,最终得到了在S1(T>30°)温度区间内93.47%的可信度,可见设计的基于多传感器信息融合的测控体系具有良好的应用前景。 相似文献