LabVIEW Based Radiosonde Telemetry System in RF Communication

Measurement of atmospheric parameters can be conducted using radiosonde for various purposes such as for weather prediction and atmospheric research. The radiosonde design working in real-time with high connectivity certainly can optimize device performance and data accuracy. This research aims to design radiosonde working at 433 MHz UHF frequency to measure the parameters of atmosphere in realtime. The designed radiosonde is using DHT11 as temperature and humidity sensors, BMP085 as pressure sensors and GPS to measure radiosonde positions and 3DR radio modules as data transmitter from radiosonde to Ground Segment (GS) devices. The designed radiosonde is able to measure data up to 4.9km height with parameters measured in the form of temperature, humidity and pressure with error rate of 82%. The data of temperature, humidity and pressure tend to decrease with the increasing of altitude in which matched with the atmospheric characteristics.