MODELING OF INFRARED SIGNAL TRANSMISSION IN FIREARMS COMBAT SIMULATION SYSTEMS

Abstract

The author investigates mathematical methods for modeling communication channels using infrared (IR) technology to improve the reliability and efficiency of data transmission in military systems. Infrared communication channels are a specific class of wireless communications that find applications in various fields, including small arms fire simulation systems. The author describes the main mathematical models, such as the ideal channel model, where the signal completely coincides with the transmitted one, and the additive Gaussian white noise (AWGN) channel model, which takes into account thermal noise in communication systems. The Rayleigh and Ritchie models are also considered to describe signal transmission conditions with and without line-ofsight (LOS). The article presents a mathematical model of packet transmission in Lasertag systems and the results of numerical experiments conducted using a rifle with a TSAL6100 IR LED. The experiments were conducted at different LED modulation powers to determine the zone of reliable signal reception. The results showed that the zone of reliable reception increases with increasing power: at 100 mW it was up to 50 meters, at 200 mW – up to 65 meters, and at 900 mW – up to 125 meters. This indicates that increasing the modulation power significantly improves the quality of communication at long distances. In addition, the author emphasizes the importance of taking into account external interference, such as sunlight and fluorescent lamps, which can degrade the quality of communication. The article also discusses the influence of the angle of divergence of the rays on the communication range and resistance to interference. The conclusions of the study may be useful for further optimization of systems for simulating small-arms combat and improving data transmission technologies in real combat conditions. The use of mathematical models allows not only to improve the efficiency of data transmission, but also to ensure the reliability of communications in hard conditions of simulated combat operations.