SYSTEM AND METHOD FOR MEASURING DISTANCE

摘要

PURPOSE: A distance measurement system and a method are provided to minimize a distance error by calculating a separation distance in consideration of an RSSI value. CONSTITUTION: A distance measurement system comprises one or more target node(10) and a reference node(20). The target node transmits a distance measurement acknowledge message according to a received ranging require-message. According to the strength of a radio signal about the distance measurement acknowledge message, the reference node checks whether the separation distance from the target node is lower than a fixed critical short distance or not. The reference node decides the error correction in a CSS mode in consideration of the radio signal strength and measures the separation distance.