Real-Time Data Transmission Design of Unmanned Aerial Vehicle Gamma Spectrometer

Unmanned aerial vehicle gamma spectroscopy is an important method for conducting nuclear emergency and rapid geological prospecting, and the design of real-time data transmission is a key technical difficulty. In this paper, four 2L large volume NaI(TL) gamma spectrometers are designed to improve the sensitivity of ground detection. GPS second pulses are used for time synchronization and added as time stamp markers to the measured energy spectrum data. The spectral line data is transmitted to the airborne industrial computer under the TCP/IP transmission protocol, and the spectral line data is packed together with other information, and then the LZMA compression algorithm is used to reduce the volume of the packed data. The packaged data and the high-definition HDMI image are sent to the ground through the digital transmission and transmission machine. The self-written RTCP transmission protocol is used in the transmission process to ensure the reliability and real-time performance of the data. Finally, the line display and the radionuclide analysis are realized on the ground receiving end, thereby ensuring the time precision and the real-time performance of long-distance transmission. The real-time data transmission method designed and developed in this paper can be widely applied to the UAV radiation measurement occasion, which can solve the problem of real-time transmission of radiation measurement data.