Abstract:The paper provides a brief overview of the development of terahertz technology and its advantages in various application scenarios, including high resolution and strong anti-stealth characteristics in radar. Regarding terahertz atmospheric transmission characteristics, the paper focuses on the basic principles of the MPM and provides an overview and comparison of mainstream atmospheric transmission models like the ATM model and AM model. At the same time, this paper also introduces recent research developments and progress on terahertz atmospheric transmission characteristics domestically and internationally. Finally, this paper summarizes the development of terahertz technology and offers prospects for its applications.