GPS_acquisition

气象要素文件（hdf）读取详细说明，适合MATLAB初学者借鉴(Meteorological element file (hdf) read details)

实现LTE下行信道估计，有LS、LMMSE、SVD-MMSE和线性插值、二阶插值、三次样条插值等算法(LTE downlink channel estimation, LS, LMMSE, SVD-MMSE and linear interpolation, second order interpolation, cubic spline interpolation algorithm)

将压缩感知应用于基于训练序列的信道估计中，代码展示了压缩和估计过程。(Will be used in compressed sensing training sequence based channel estimation, the code shows the compression and estimation process.)

差分GPS整周模糊度的的经典解算算法——LAMBDA算法及基线的实时解算(Classic Differential GPS ambiguity of the solver algorithm and real-time solution algorithm LAMBDA baseline count)

使用dsp f2812完成DFT复数波束形成，先是在matlab上进行仿真，再在ccs上进行实现的程序(Dsp f2812 complete DFT complex beamforming, first in matlab simulation program to achieve in ccs)

由中频信号捕获到跟踪、解算等一系列处理GPS接收机链路实现(Implementation of GPS receiver link)

GPS 的地球卫星运转情况仿真 还可以生成GPS信号(GPS satellite functioning of the simulation can also generate GPS signals)

可以在MATLAB中对三维点云数据进行中值滤波。(The median filtering of 3D point cloud data can be carried out.)

说明：  传统的高分辨波达方向（DOA）估计算法中，一般都假设信号位于远场，此时入射到阵列的信源波前为平面波前，空间信号的定位参数可由DOA来确定。然而，当信源处于阵列的Fresnel区域时，信号波前需用球面波来描述，每个信源的定位信息要用DOA和距离联合描述。因此，远场情况下的一些线性理论推导已不再成立，传统的远场算法的估计不再适用(In traditional high resolution direction of arrival (DOA) estimation algorithms, it is generally assumed that the signal is located in the far field, where the source wavefront incident to the array is plane wavefront, and the location parameters of the spatial signal can be determined by DOA. However, when the source is in the Fresnel region of the array, the wavefront of the signal needs to be described by spherical wave, and the location information of each source needs to be described by DOA and distance. Therefore, some linear theoretical deductions are no longer valid in the far-field case, and the estimation of the traditional far-field algorithm is no longer applicable.)

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