The Automatic Weather Station (AWS) is a compact, modular, rugged, low-cost system for collecting meteorological data. The AWS data logger, at the heart of the system, consists of an LCD, keypad, GPS-based real-time clock, sensor interface, sensor power control, local data

storage, USB drive for data backup, and GSM / GPRS / CDMA modem communication interface. 
The AWS can be installed in the field. The data logger, atmospheric pressure sensor, power supply, modem and battery are housed in a portable, self-contained, weatherproof enclosure, suitable for outdoor use. The system typically operates in a low-power mode; it becomes active during data acquisition or transmission, user interaction, or

related events. The system’s low power requirements allow extended field use from a DC voltage source. A single **-volt rechargeable SMF battery is charged by a solar panel.

The data logger automatically collects observation data from all attached sensors at every user-selected time interval, stores the data in its memory, and periodically transmits the data to a server through the GSM / GPRS communication link, thus providing the data to users through the server. 
At a central station, the PC-based Network Management Software can communicate with each AWS system in the field and retrieve meteorological data through a secure protocol. A user management module restricts unauthentic information or configuration access. The module includes quality checks per the WMO standard, data displays in table or graphic format, generation of analysis reports, and

automatic data backup at intervals. 

The system is suitable for several applications, including weather monitoring, flood monitoring, pollution monitoring, irrigation scheduling, water management, transport support, defense support, and energy monitoring. Users include national centers for weather forecasting, research organizations, airport authorities, military and coast guard

authorities, media organizations, and agricultural universities.