根据椭球大地坐标求正常重力

32×32的寄存器堆，它有32个32位的寄存器、两个读端口和一个写端口。该寄存器堆由3个层次共5个模块构成，最低层次的模块是D触发器，中间层次的模块包括32位寄存器、5位地址译码器、32选1多路选通器，顶层模块是寄存器堆模块。设计采用行为建模和结构建模相结合的方法，先用行为建模方法建立低层模块，然后再用结构建模方法搭建高层模块。-32 × 32 of the register file, it has 32 32-bit registers, two read ports and one write port. The register file by the three levels of a total of five modules, the lowest level module is the D flip-flop, middle-level module including 32-bit register, address decoder 5, 32 election more than one way strobe, and top-level module is Register File module. Design using behavioral modeling and structural modeling method of combining the first act of modeling methods used to establish low-level modules, then the structural modeling method to build high-level module.

数字摄影测量学中的后方交会，使用三个以上的控制点坐标求出外方位元素-digital photographic surveying the resection, the use of three over the control point coordinates obtained exterior orientation elements

vc++ MapX二次开发中问题较多的中文标注的解决。在地图上标绘图标，可输入经纬度精确定位，并显示最多可输入50个汉字的标注，图标在地图上拖动移位，图标删除等，附带缩放、漫游、归心、状态栏显示当前鼠标位置经纬度等基本功能。-vc++ MapX secondary development of the Chinese are more marked resolved. Drawing on the map superscript superscript, enter the latitude and longitude accurate positioning, and display up to 50 Chinese characters input tagging, drag the icon on the map shift, delete the icon, etc., with zoom, roam, in the heart, the status bar displays the current mouse and other basic functions of latitude and longitude position.

一个非常好的MapX开发实例，首先要制作.gst文件，在上传的实例中以有“bigchina.gst-a very good example of MapX development, the first production. Aging documents in the case were uploaded to a "bigchina.gst

采用ArcGIS9.0 中的ArcServer加VB开发的程序。可进行联接、网上信息发布等。- Uses in ArcGIS9.0 ArcServer to add the VB development the procedure. May carry on the joint, the on-line information issue and so on.

GIS数据格式转换器(Mapinfo tab to ESRI shapefile)（VC++程序）-GIS data format converters (Mapinfo tab to ESRI shapefile) (VC++ Procedure)

Princeton Shape 的模型库..其中的文件是.off格式的...对做三维模型的朋友有帮助-Princeton Shape model library .. which documents are. Off format ... to do three-dimensional model of a friend has to help

MapObjects的VB二次开发源码，用于GPS导航-MapObjects secondary development VB source for the GPS navigation

WebGIS的实现和应用-WebGIS Implementation and Application

在VC环境中利用MAPX实现在地图中的直线测量与折线测量。-in VC Connection use the map to achieve the linear measurement and measurement dogleg.