Radio wave identification device, radio wave identification method and radio wave environment visualization system

摘要

PROBLEM TO BE SOLVED: To compensate individual difference of time information in each receiving node. SOLUTION: Of the first and second received signal sequences received by the first and second receiving nodes, the first reception while expanding and contracting the scale of the time axis of the second received signal sequence at the time expansion / contraction rate. The correlation value with the signal sequence is calculated, the second received signal sequence is offset by the time offset on the time axis to determine the time expansion / contraction rate and the time offset at which the correlation value becomes the maximum value, and the correlation value becomes the maximum value. By applying the time expansion / contraction rate and the time offset to the time information of the second received signal series, each packet of each of the first and second received signal series is compared with each other, and each packet is transmitted. Packets with similar start time, packet length, and signal strength are linked one-to-one, and when the maximum correlation value exceeds the threshold value, the linked packets receive the first and second receptions. Outputs the radio wave identification result determined to be the received signal sequence of radio waves received by the node from the same source. [Selection diagram] Fig. 5