광역 센서 네트워크를 위한 센서 노드의 높이 선택 방법

Long distance transmission is advantageous in environment monitoring system using wireless sensor networks. When this system is applied in reality, there are many kinds of obstacles, noises, reflections, refractions, and so on. To maximize the transmission distance, we need LOS (line of sight). For sensor node installation only the distance between each sensor. However, it has been considered not good enough to describe the communication space , because there is ground reflection. In this paper, we analyze the optimized distance and height of sensor node using two-ray ground model and considering environment variable. The distance and height in sensor network is decided to be 200 m and 3 m respectively for the environment variable of 3.