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当突发公共事件(如雨雪、地震、洪水等)时,公众通信网络可能会遭受损害,网络局部可能出现过大流量,这会造成通信网络承载能力下降,进而造成应急响应能力下降。车载应急通信系统是应急通信体系中的一个重要组成部分,它可以在移动通信基站陷入瘫痪或者网络出现拥塞后,迅速提供有效的应急通信保障,加强突发公共事件发生时党政军等重要部门的通信能力,保障对突发灾害和紧急事件的应急通信指挥调度。 相似文献
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严昊平徐友根王亚昕史树理苟晓鸣 《计算机与数字工程》2014,(2):304-307
以地球为背景的飞机航迹动态演示模型已经被广泛应用于航迹监控、目标定位、航空管理等众多领域.论文利用OpenGL开放图形库和Visual C++开发环境进行了以地球为背景的飞机航迹建模与仿真.详细介绍了将飞机位置始终保持在视野中心的实现方法和三维坐标转换、视角调整等主要步骤,并由此开发了一款飞机航迹动态仿真软件. 相似文献
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Spatially smoothed quaternion-Capon beamforming in the presence of coherent interferences 总被引:1,自引:0,他引:1
The performance the quaternion-Capon (Q-Capon) beamformer degraded when suppressing the interferences that are coherent with the signal of interest (SOI). To tackle the problem, the spatial smoothing technique is adopted in quaternion domain to decorrelate the interferences by using linearly and uniformly spaced two-component electromagnetic vector-sensors. By averaging several translational invariant subarray quaternion covariance matrices, the quaternion spatial smoothing is performed to prevent the SOI cancellation phenomena caused by the presence of coherent interferences. It is demonstrated that the quaternion spatial smoothing Q-Capon beamformer can suppress the coherent interferences remarkably while the computational cost is lower than the complex domain long vector spatial smoothing counterpart. Theoretical analyses and simulation results validate the efficacy of the spatially smoothed Q-Capon beamformer in terms of coherent interference suppression capability. 相似文献
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