GIS METHOD AND APPARATUS FOR CALCULATING PATH LOSS BASED ON GIS

摘要

The GIS (Geographic Information System)-based path loss calculation device generates a topographical cross-sectional view for each angle by extracting an elevation point at a predetermined distance interval for each angle with the corresponding point as the origin for each point having elevation data in the analysis area, and For a point, information of an obstacle is extracted by analyzing the topographical cross-sectional view generated for each angle, and then, in response to the altitude data of each point, the topographical cross-sectional view preprocessing data including information of the obstacle for each angle is stored in the storage unit. After that, when the positions of the transmitter and the receiver in the analysis area are generated, the total path loss between the transmitter and the receiver is calculated by checking whether there is an obstacle in the azimuth direction between the transmitter and the receiver from the topographical cross-sectional preprocessing data stored in the storage unit. do.