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一些关于GPS导航的ppt文件，希望对大家的学习有帮助(Some ppt files on GPS navigation, we hope to learn helpful)

c#开发，用于接收远程gprs模块发送来的数据，安装于服务器端，可用于gps数据是采集。(c# development, for receiving the data sent to remote gprs module, installed on the server side)

利用wifi信号进行精准的定位，mit代码(locolizing using wifi)

说明：  二维图像的小波分解与重构，并画图显示。通过多分辨率分析实现。(2D image wavelet decomposition and reconstruction, and drawing show. Through multiresolution analysis to achieve.)

运用matlab仿真实现多相滤波结构，带有中文注释，简单易懂。可以运行直接观察波形(Using MATLAB simulation to achieve polyphase filter structure, with Chinese annotation, easy to understand. Direct observation waveforms can be run)

非聚焦型光场相机成像模拟，光线追迹，成像分析(light field camera)

TDOA算法包括泰勒，最小二乘法，chan算法及改进算法等(TDOA algorithm includes Taylor, least square method, Chan algorithm and improved algorithm)

MPSK QAM MASK MPSK信号载频估计matlab程序(matlab program of estimating Carrier Frequency of MPSK QAM MASK MPSK signal )

最大类间方差法是由日本学者大津(Nobuyuki Otsu)于1979年提出的,是一种自适应的阈值确定的方法,又叫大津法,简称OTSU。它是按图像的灰度特性,将图像分成背景和目标2部分。背景和目标之间的类间方差越大,说明构成图像的2部分的差别越大,当部分目标错分为背景或部分背景错分为目标都会导致2部分差别变小。(The largest between-class variance method was proposed by the Japanese scholar Nobuyuki Otsu in 1979. It is an adaptive threshold determination method, also known as the Otsu method, or OTSU for short. It is based on the grayscale characteristics of the image and divides the image into two parts: the background and the target. The larger the variance between the background and the target, the greater the difference between the two parts that make up the image. When the part of the target is wrongly divided into backgrounds or part of the background is mis-divided into goals, the difference between the two parts will be smaller.)

gps tracker protocol of uniguard