GPS的自主完善性算法 RAIM

绘制三维矢量图， 收集自网络并做了改进， 非常适合科研人员使用(plot a 3D arrow figure)

An Invitation to 3d vision 一书的配套源代码，对3d视觉和3d重建感兴趣的可以看看(Source code accompany <An Invitation to 3d vision >, anyone who is interested in 3d vision and reconstruction should see this.)

LS,MMSE理论性能比较,经测试与理论曲线吻合(LS, MMSE performance comparison theory, tested in line with the theoretical curve)

Douglas Peucker算法的matlab实现，应用于地图制图中的综合制图。其中有中国地图数据加以验证。可以自设threshold。(The matlab implementation of Douglas Peucker algorithm is applied to cartographic generalization in cartography. Among them, the map data of China is verified. You can set threshold yourself.)

说明：  GPS伪距动态单点定位的计算公式,分析单点定位误差与几何强度因子GDOP之间的关系,并研究了当观测卫星数仅为必要的4颗时定位精度的降低情况,画出了GDOP与平面定位精度之间的等值线关系图,并研究了GDOP与定位精度之间的相关性。(the kinematic positioning formula using GPS pesudorange is given. The relationshipbetween error of single point positioning and geometry dilution of positioning(GDOP) is analysed. The worse situation in which only 4 pesudoranges are used in positioning is introduced. The relation contour between plane error of positioning and GDOP is given. Also studied is the correlation between positioning accuracy and GDOP. )

BPSK信号的仿真，包括随机信号产生、数字基带信号、已调信号、加噪声，解调等(BPSK signal simulation, including the random signal generator, a digital baseband signal, the modulated signal, plus noise, the demodulation)

连 续 投 影 算 法(SPA)是 一 种 使 矢 量 空 间 共 线 性最小化的前向变量选择算法， 它的优势在于提取全波段的几个特征波长， 能够消除原始光谱矩阵中冗余的信息，可用于光谱特征波长的筛选(Continuous projection to calculate method (SPA) is a kind of minimizing vector spatial collinear prior to variable selection algorithm, and it has the advantage of extract all band several characteristics of wavelength, can eliminate redundant information in the original spectral matrix, can be used for spectral characteristic wavelength filter)

ieee 39 节点，用于电力系统网络测试(ieee 39-bus test system, used to test the electricity system)

matlab环境下的残留边带条幅信号的调制与解调，绘出频率密度(matlab environment vestigial sideband modulation and demodulation signal banners, frequency density plot )

64QAM调制gray码映射在高斯信道下的误比特率和理论误比特率(64QAM modulation gray code mapping in Gaussian channel bit error rate and the theoretical bit error rate)