深入理解Android之Gradle

SIM800C 原理图,带电源处理和SIM卡槽，兼容两种天线座子(SIM800C schematic with power handling and SIM card slot, compatible with two antenna holders)

说明：  there's a clock divider for DE2 altra board clock (50MHz)

说明：  Flash-as 3.0-Common Code-Collection Edition

说明：  介绍了linux的基础知识，包括linux进程 各种linux命令(This paper introduces the basic knowledge of linux, including various linux commands of Linux process.)

室内行人航迹推算程序 MTI绑在实验人员的脚上，按照预先在设计的路线行走，以IMU采样频率分别为100HZ、50HZ和25HZ采集数据，并进行数据处理和比较(Indoor pedestrian dead reckoning program MTI feet tied laboratory personnel, travel routes previously designed according to the sampling frequency, respectively IMU 100HZ, 50HZ 25HZ and data acquisition, and data processing and comparison of)

一个很不错的vc4000捕捉卡视频捕捉程序开发包。-a very good vc4000 capture video capture card program development package.

说明：  熟悉IIC协议总线协议，采用IIC总线对图像采集传感器寄存器进行配置，并转换为RGB565格式。 利用异步FIFO完成从摄像头输出端到SDRAM 和SDRAM 到VGA 接口各跨时钟域信号的传输和处理。 利用 SDRAM 接口模块的设计，实现了刷新、读写等操作；为提高SDRAM 的读写带宽，均采用突发连续读写数据方式；并采用乒乓操作实现 CMOS 摄像头与VGA的帧率匹配。 利用双线性插值方法实现对图像640×480到1024×768的放大操作。 完成VGA显示接口设计。(Familiar with IIC protocol bus protocol, IIC bus is used to configure the register of image acquisition sensor and convert it into RGB565 format. Asynchronous FIFO is used to transmit and process signals across clock domain from camera output to SDRAM and SDRAM to VGA interface. With the design of SDRAM interface module, refresh, read and write operations are realized. In order to improve the read and write bandwidth of SDRAM, burst continuous read and write data mode is adopted, and table tennis operation is used to achieve frame rate matching between CMOS camera and VGA. The bilinear interpolation method is used to enlarge the image from 640*480 to 1024*768. Complete the VGA display interface design.)

重力异常的向上延拓程序，很实用，推荐地球物理学生学习-Gravity anomaly upward extension procedure is very useful, recommended geophysics students

使用暴力方法，寻找并输出一定范围内的amicable pair.(Violent methods used to find and output a range of amicable pair.)

InSAR是一种极具潜力的新型空间大地测量方法，但它也有其固有的限制，特别是受到大气层延迟（对流层延迟、电离层延迟等）、卫星轨道误差、地表状况和时变去相关性等影响，很容易导致InSAR图像解释错误，而InSAR数据本身无法解决所存在的上述问题。而GPS可以精密定位，可以较为精确地确定电离层、对流层参数，是当前应用最广泛的一种空间大地测量手段。-InSAR is a potential new space geodetic methods, but it also has its inherent limitations. in particular by the delay in the atmosphere (troposphere delay, ionospheric delay, etc.), satellite orbit errors, Surface conditions and time-varying correlation to the impact of such very easily lead to wrong interpretation of InSAR image, InSAR data and by itself can not solve the above problems. GPS precision positioning can be more accurately determine the ionosphere, troposphere parameters, is the most widely used as a means of space geodesy.