GPS测量直接提供的坐标（B,L,H）是1984年世界大地坐标系(Word Geodetic System 1984即WGS-84)的坐标，其中B为纬度，L为经度，H为大地高。而在实际应用中，我国采用的是1954北京坐标系或者1980西安坐标系下的高斯投影坐标（x ,y）。如何实现WGS-84坐标系与北京54坐标系或者1980西安坐标系的转换，一直是GPS应用中关心的热点。
Abstract. A quantitative global sensitivity analysis (SA) is applied to the non-linear inversion of gravity changes and displacement data which measured in an active volcanic area.
PART I – 概览.........................................................................................................................11 第 1章 – DB2 Express-C是什么?..........................................................................................
PART I – 概览.........................................................................................................................11 第 1章 – DB2 Express-C是什么?..........................................................................................
最新官方资料 Contents About this book ............................................................................................................... 11 Notices and trademarks ...............................................................................
PART I – 概览.........................................................................................................................11 第 1章 – DB2 Express-C是什么?..........................................................................................
Truly revolutionary: now you can write geolocation applications directly in the browser, rather than develop native apps for particular devices. This concise book demonstrates the W3C Geolocation API in action, with code and examples to help you bui
This technical report defines the Department of Defense (DoD) World GeodeticSystem 1984 (WGS 84). This third edition reflects improvements which have been made to theWGS 84 since the second edition. The present WGS represents the National Imagery an
A collection of geodetic functions that solve a variety of problems in geodesy. Supports a wide range of common and user-defined reference ellipsoids. Most functions are vectorized. Most recent version can be found at . Functions include: Angle Conv
