Abstract: A detecting system for an unauthorized device having a movable locator is disclosed. The movable locator includes a location positioning unit, a signal sniffing unit, a signal collecting unit, and a device positioning unit. The location positioning unit detects a locator position of the movable locator. The signal sniffing unit detects Wi-Fi signal of an unauthorized device and generates a sensing report message. The signal collecting unit adds multiple sensing report messages to a sensing report record collection. The device positioning unit organizes multiple positioning combinations based on the content of the sensing report record collection, generates multiple positioning results respectively based on the multiple positioning combinations, and performs a weighting process to the multiple positioning results to generate a final positioning result of the unauthorized device.

Abstract: An intrusion detection system and intrusion detection method are provided. The intrusion detection system includes multiple IoT devices and a central control device. The central control device is configured to obtain multiple sensing pairs from a paired combination of the multiple IoT devices; create a sensing-pair list including the multiple sensing pairs and features of each sensing pair; obtain multiple first pairs whose features satisfy a first feature condition from the sensing-pair list; dynamically schedule the multiple IoT devices to send and receive signals in a time sharing fashion to obtain a first sensing signal of each first pair; and based on a paired node of the multiple first pairs, count a first status code and a second status code of the multiple first pairs to which each paired node belongs, to determine whether any intrusion condition occurs.

Abstract: A detecting system for an unauthorized device having a movable locator is disclosed. The movable locator includes a location positioning unit, a signal sniffing unit, a signal collecting unit, and a device positioning unit. The location positioning unit detects a locator position of the movable locator. The signal sniffing unit detects Wi-Fi signal of an unauthorized device and generates a sensing report message. The signal collecting unit adds multiple sensing report messages to a sensing report record collection. The device positioning unit organizes multiple positioning combinations based on the content of the sensing report record collection, generates multiple positioning results respectively based on the multiple positioning combinations, and performs a weighting process to the multiple positioning results to generate a final positioning result of the unauthorized device.

Abstract: An electronic device and a method for detecting apnea are provided. The method includes: transmitting a wireless signal to a human subject, receiving an echo corresponding to the wireless signal, and obtaining channel state information (CSI) from the echo; generating a detection result according to the CSI; outputting the detection result. Here, the detection result indicates whether an apnea event has occurred on the human subject.

Abstract: A system and a method for signal sensing are provided. The system for signal sensing includes a sensing device, a processor and a time server coupled to the sensing device. The sensing device includes a plurality of receivers and an oscillator coupled to the receivers. The receivers are synchronized by receiving a time synchronization signal from the time server. The receivers monitor a plurality of signals of an object according to a clock generated by the oscillator and obtains a plurality of channel state information (CSI) according to the signals. The processor calculates an angle of arrival of the signals according to the CSI.

Abstract: A system and a method for signal sensing are provided. The system for signal sensing includes a processor, a transmitter, a receiver, and an oscillator. The oscillator is coupled to the transmitter and the receiver. The oscillator generates a clock signal. The transmitter transmits a plurality of output signals according to the clock signal. The receiver receives a first output signal reflected by an object according to the clock signal and obtains a channel state information according to the first output signal. The processor identifies a state of the object according to the channel state information and outputs the state of the object.

Abstract: Provided is a wireless positioning calibration system, including a plurality of transmission base stations, at least one sniffer base station and a positioning server. The at least one sniffer base station receives a plurality of channel state information (CSI) transmitted by the plurality of transmission base stations. The positioning server receives the plurality of CSI transmitted by the at least one sniffer base station. The positioning server calculates a phase error and an antenna spacing error generated by the at least one sniffer base station by means of the plurality of CSI, and compensates the phase error and the antenna spacing error. A wireless positioning calibration method is also provided.

Abstract: The disclosure provides a channel-based positioning device, a channel-based positioning system and a channel-based positioning method. The channel-based positioning method includes: calculating a plurality of angles of arrival (AoA), a plurality of angles of departure (AoD) and a plurality of time of flight (ToF) of signals according to a plurality of channel state information transmitted from a terminal apparatus to a base station; determining a path type of the signals according to the plurality of AoA, AoD and ToF of the signals; and calculating a position information of the terminal apparatus relative to the base station through a specific algorithm.

Abstract: Provided is a wireless positioning calibration system, including a plurality of transmission base stations, at least one sniffer base station and a positioning server. The at least one sniffer base station receives a plurality of channel state information (CSI) transmitted by the plurality of transmission base stations. The positioning server receives the plurality of CSI transmitted by the at least one sniffer base station. The positioning server calculates a phase error and an antenna spacing error generated by the at least one sniffer base station by means of the plurality of CSI, and compensates the phase error and the antenna spacing error. A wireless positioning calibration method is also provided.

Abstract: The disclosure provides a channel-based positioning device, a channel-based positioning system and a channel-based positioning method. The channel-based positioning method includes: calculating a plurality of angles of arrival (AoA), a plurality of angles of departure (AoD) and a plurality of time of flight (ToF) of signals according to a plurality of channel state information transmitted from a terminal apparatus to a base station; determining a path type of the signals according to the plurality of AoA, AoD and ToF of the signals; and calculating a position information of the terminal apparatus relative to the base station through a specific algorithm.