| 摘要 |
PROBLEM TO BE SOLVED: To provide a reception analysis device capable of analyzing high frequency signals that are received from transmission devices and automatically (also partially manually) individually identifying (identifying a difference even in the same devices), classifying and specifying the transmission devices.SOLUTION: High frequency signals transmitted from transmission devices are received while being divided into a wide band and a narrow band and states of the high frequency signals in a time domain are divided into five states of a rising state, a normal state (transmission state), a silent state (in the case of voice communication), a falling state and an abnormal state. The modulated high frequency signal is separated into a carrier and a modulation wave and converted into a time axis and a frequency axis (also including a phase change) as needed and a result is parameterized. While defining a combination of the parameters as input, approaches of machine learning are combined and from among the received signals, the transmission devices are individually identified, classified and specified automatically while including properties, fluctuation ranges and fluctuation speeds of the parameters.SELECTED DRAWING: Figure 2 |
