Experimental research of THz radiation’s characteristics of atmospheric transmission

The paper focuses on experiments and testing researches on the attenuation of THz electromagnetic radiation due to atmospheres absorption. The difference system with double light paths is designed to minimize systemic errors caused by the instability of THz radiation sources output power, and to measure changes of transmission power at multiple THz frequency points in the simulated atmospheric environment, so as to explore the law of attenuation of THz waves in different frequency bands. Moreover, a dynamic database of the characteristics of THz atmospheric transmission is established to analyze abundant atmospheric data and provide support for experimental data processing and theoretical research.