In the past few years many countries has rapidly developed and adopted Upper-air operational system, GPS sounding systems. We S S Micro Electronics Technology (P) Ltd. has also developed Indigenous Upper-air operational system, GPS sounding systems. This system is used to measure the meteorological elements as temperature, air pressure, humidity, wind direction, wind speed and altitude etc. from ground to around 40 Km in the aerological atmosphere directly and accurately. Radar tracking on ground is not used in this system, but it employs a high precision GPS to automatically track the sounding of the balloon. As a result of this automaticity the accuracy of the system improves significantly.
