The Need to Autonomous Radiosounding System
The Need to Autonomous Radiosounding System作者机构：The Egyptian Meteorological Authority Koubry El-Quobba Cairo 11784 Egypt
出 版 物：《Journal of Geodesy and Geomatics Engineering》 (测绘与测绘工程（英文版）)
年 卷 期：2015年第2卷第1期
页 面：53-58页
学科分类：070801[理学-固体地球物理学] 07[理学] 08[工学] 0708[理学-地球物理学] 0816[工学-测绘科学与技术]
主 题：Global positioning system inertial navigation system upper air observation.
摘 要：In recent years, the upper air radiosounding system based on GPS （global positioning system） is used as an effective method resulting to improving observation accuracy and helping in simplification of the ground equipment. GPS is used to calculate the pressure and wind speed and direction. The NAVSTAR GPS has been developed by the Department of Defense of the United States, and the main purpose is to provide the military forces of the USA and its allies with a means to accurately determine their position, velocity and time, anywhere on the earth, at any time. Europe is now developing its own GPS, known as Galileo, which is independent of the USA GPS. As a result, many countries now are developing their own GPS system like Russia （GLONASS）, China （Compass）, India, and Japan. As a direct result, we can face the fact that each and every country will have its own GPS system and finally we come up with a crowded space. The INS （inertial navigation system） is a system that, once initialized （by acquiring the initial position, velocity, and orientation information）, becomes an autonomous navigation system providing 3-D position, velocity, and attitude information. So upper air observation can take advantage of this emerging technology by using this stand alone system （INS） in measuring wind speed and direction as well as measuring the altitude we can calculate the pressure.
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