查尔默斯理工大学硕士论文项目，2021年春。这项工作是......一个更大项目的一部分...
Master s thesis project at Chalmers University of Technology, spring 2021. The work was a part of a larger project at Chalmers to develop a prototype of an autonomous railway vehicle that can be used for inspection and maintenance of railway infrastructure. (2021-06-01, C++, 109522KB, 下载0次)
这是一个运动健身类app,纺大夜跑团 ,能够根据gps或网络定位来实时绘制跑步轨迹,并计算速度距离, 并且还加入社交功能 , 可以和附近的跑步用户打招呼加好友, 并加入了排行榜组团跑步等
This is a sports and fitness app, which can map the running track in real time according to gps or network positioning, calculate the speed and distance, and also add social functions. It can greet nearby running users, add friends, and join the leaderboard group running (2018-12-29, Java, 24661KB, 下载0次)
针对基于GPS／GIS的浮动车数据特点，总结其中无效的数据类型，并给出数据有效处理的方法。以支持向量机原理、交通状态预测方法为基础，分析了常用支持向量回归机、核函数及模型参数的性能，以及各核函数及模型参数对支持向量机性能的影响及作用。针对路段平均速度预测中的小样本、非线性、高维回归等特点，将支持向量回归机方法引入基于浮动车数据的路段车辆速度预测，构建了路段平均速度短时预测模型。并以杭州市某路段的实际数据为例，详细阐述了支持向量回归机预测模型的具体建模和求解过程。运用LibSVM2．84软件包，进行预测模型的参数选择、样本训练以及预测求解，并通过预测结果的对比分析，验证了预测模型的可用性和有效性。
Characteristics of the GPS/GIS-based floating car data, summary of which types of invalid data, and gives the effective data processing method. Support vector machine, the traffic state prediction method based on analysis of commonly used support vector regression machines, nuclear function and performance of the model parameters, as well as the kernel function and model parameters on the performance of SVM and effect. Small sample, nonlinear, high dimensional regression for the prediction of average speed characteristics, the support vector regression machine to the introduction of prediction based on floating car data section of the speed of vehicles, build a short-term forecasting model of average speed. In Hangzhou section of the actual data, for example, elaborated on the specific modeling and solving process of the support vector machine for regression prediction model. Use LibSVM2.84 package forecast model parameter selection, sample training, and forecasting solution, and verif (2012-06-24, Others, 2156KB, 下载32次)
姿态信息是飞行控制中最关键的参数之一,因此姿态测量成为飞行控制系统首要解决的问题。利用多MEMS传感器研制了一种微型姿态测量系统。利用三轴MEMS加速度计和三轴MEMS陀螺数据,由方向余弦矩阵的姿态表示形式推导了扩展Kalman滤波方程,解算出飞行器的俯仰角和横滚角 设计专家系统判断飞行器的运动状态,并根据该状态调整滤波算法中的测量噪声矩阵,使系统可同时满足静态情况和动态情况的使用 利用空速和高度数据对俯仰角进行修正,利用GPS解算航向角。将实验结果与国外最新
的商用自动驾驶仪的姿态结果进行了比较,二者在静态情况下非常吻合,在动态情况下基本吻合。
The attitude information is one of the most important
parameters in flight control systems. This paper describes an
attitude measurement system based on a MEMS multi-sensor. The
data from 3-axis MEMS accelerators and 3-axis MEMS gyros is used
to determine the pitch angle and the roll angle of the air vehicle using
an extended Kalman filter (EKF) equation deduced from the
direction cosine matrix. An expert system was designed to estimate
the vehicle motion to adjust the measurement noise matrix of the
extended Kalman filter equation so that the system can be used in
dynamic as well as static environments. The measured airspeed and
altitude are also used to revise the pitch angle. The heading is
determined from GPS information. Test results compare well with
an imported commercial autopilot in a static test with less accurate
results in a dynamic test.
(2011-04-07, C++, 49KB, 下载158次)
1. VC++6.0串口操作实现GPS数据提取
2. VC++串口实现双机互联，包含视窗加代码
3. VC++编写的实时读写串口数据，并用VC画出相应的数据波形
4. VC++串口控件实现温度数据的采集并显示，做出曲线
1. VC++6.0 serial operation to achieve GPS data extraction 2. VC++ Serial Port Dual Internet, including Windows add code 3. VC++ written in real-time read and write serial data, and with the VC to draw the appropriate data waveform 4. VC++ Serial control implementation Temperature data acquisition and display, to make curve (2011-03-10, Visual C++, 2142KB, 下载72次)
GPS系统接收数据坐标转换
GPS接收的数据往往是三维坐标，而在科学研究中我们通常用二维坐标。因此必须
进行坐标转换，下面我们介绍一种坐标转换，即把WGS84坐标转换为高斯—克吕
格坐标系。数字地图投影的方法很多，而我国采用了高斯—克吕格投影，它是一
种横轴椭园柱面等角投影，用一个椭球柱面与地球椭球在某一子午圈L0上相切，
这条子午线通常称做投影轴子午线。也就是高斯-克吕格投影直角坐标系的x 轴，
地球的赤道与椭圆柱面相交, 成一直线,这条直线与轴子午线正交,就是平面直角坐
标系的y轴，把椭球柱面展开，就得到以（x,y）为坐标的平面直角坐标系。为减少
投影变形，按经度把椭球分为许多带，各带分别投影，经常采用的是3度和6度带。
为使y值不为负值，通常在y轴上加上500km。
已知WGS84坐标（B，L），B为GPS定位输出成果的纬度，L为GPS定位输出成果的经度。
由WGS84到高斯-克吕格坐标(x,y)的转换成高斯投影正算，详见本软件
err (2008-06-11, C#, 34KB, 下载520次)