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B-IFDMA pdf document

一些PMF-FFT GPS信号捕获的有关论文(Some PMF-FFT signal acquisition related papers)

he energy generated using a photovoltaic (PV) are depends mainly on meteorological factors such as temperature and solar radiation. Considering the high cost and the low efficiency of a PV system, it must operate at maximum power point (MPP) which changes with the load variations and weather conditions. This article presents the conception of a nonlinear controller for the DC-DC converter to retrieve a maximum power from photovoltaic systems (PV). This is affected via the control of duty cycle of the converter. The backstepping control is used to design the controller. The incremental conductance algorithm provides the output reference voltage PV to the backstepping controller. An integral Action is added in order to render the controller robust against changes of parameters and perturbations. The proposed controller performance is assessed by numerical simulations under changing atmospheric conditions(efficiency of a PV system, it must operate at maximum power point (MPP) which changes with the load variations and weather conditions. This article presents the conception of a nonlinear controller for the DC-DC converter to retrieve a maximum power from photovoltaic systems (PV). This is affected via the control of duty cycle of the converter. The backstepping control is used to design the controller. The incremental conductance algorithm provides the output reference voltage PV to the backstepping controller. An integral Action is added in order to render the controller robust against changes of parameters and perturbations. The proposed controller performance is assessed by numerical simulations under changing atmospheric conditions)

A model object containing contact data.

this is very very book. thank you

将大地坐标转换到大地空间直角坐标，即将大地纬度，大地经度，大地高转换到X,Y,Z,采用的是克拉索夫斯基椭球(Will the earth coordinate transformation to the space rectangular coordinate, the earth is the latitude and longitude of the earth, the earth high transition to the X, Y, Z, USES a carat SuoFuSi ellipsoid)

一个简单的DEM格式数据读入，opengl三维显示演示程序。(A simple to read DEM data format, opengl demo of three-dimensional display.)

很好的qt资料，是qt4的，不是qt3的(good)

基于多相滤波宽带信道化数字接收机，对多相滤波器进行了深入介绍。(Digital Receivers Using Polyphase Filter )

采用全波电磁仿真软件，仿真设计了超宽带缝隙结构的平面等角螺旋天线和阿基米德螺旋天线，两种天线都采用同轴电缆直接馈电的方式。(this paper proposes an idea about experimental teaching mode reforming of microwave technology and antenna courses by introducing the full wave elect.)