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2篇 您的检索式:作者名="Z.Bi"
    题名 作者 年代 出处 被引量
1Experimental study of compressible boundary layer on a cone at angles of attack显示文摘Experimental study was conducted for boundary-layerson a sharp 5°half-angle cone of 400 mm length atangles of attack. The model was tested in the T-326 hypersonicwind tunnel (ITAM) at freestream Mach numberM = 5.95. Mean and fluctuation wall characteristics of theboundary layer are measured at 0°2°3°and 4°angles ofattack for different stagnation pressures. Pulsation measurementsare carried out by means of ALTP sensor. Pressureand temperature distributions along the model are obtained,and transition beginning and end locations have been found.Boundary layer stabilization with the increase of angle ofattack and the decrease of stagnation pressure is observed.High frequency pulsations inherent to hypersonic boundarylayer (second mode) have been detected.A.Maslov D.Bountin A.Shiplyuk A.Sidorenko Q.Shen Z.Bi 2009Acta Mechanica Sinica2009,25,3:2
2联合实施超分辨率动目标特征提取及静态杂波抑制显示文摘对于许多涉及到杂波背景下的动目标探测和分类的军事与民事应用,高距离分辨率(HRR)动目标显示雷达正变得日益重要,对于地面高距离分辨率雷达,当目标慢动或沿近正侧向运动且相干处理间隔或驻留时间不太长时,距离徒动和距离特征失真的影响可忽略不计。基于这种假设,建议对存在静态杂波时由距离向间距很近的散射体组成的动目标的HRR特征提取采用稳健且计算简单的基于松驰的算法。数值仿真实例表明这种算法具有超分辨率和良好的估计性能。Z.Bi 武德琼 等 2001空载雷达2001,,4:0
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