The aerial drone is widely loved by many consumers. Although such devices allow users to capture the angle and breadth of different scenery from the past, the drones fly into sensitive areas such as airports, and the governments of all countries try to find ways. To guard against these high-altitude intruders. For example, the Dutch police have come up with training "feather police officers" - eagle to ban illegal drones; or use electromagnetic interference guns, sonic interference guns, or directly destroy anti-UAV systems . However, these methods do not have the function of detecting and monitoring the drone, and still have to find the drone device and then counter it. To this end, the Electrical Engineering Department of Taiwan University has developed itrack tracking technology to detect unmanned vehicles in the restricted area by means of radio wave detection. Mao Shaogang, a professor of electrical engineering and telecom engineering at National Taiwan University, explained that most of the common unmanned vehicle monitoring used in the past was to install image monitoring devices in high-rise buildings near the restricted area, or to detect them by radar.
The biggest pain point of the former is that the ambient light will greatly affect the recognition. The latter's construction cost is as high as tens of millions of dollars. In addition, the use of radar detection must emit a considerable amount of radio waves, which is not friendly to the surrounding environment. . The detection method of itrack is not to transmit radio waves, but to detect the position of unmanned vehicles by receiving radio waves. Therefore, there is no doubt that electromagnetic interference and exposure are harmful to the human body.
Mao Shaogang explained that to control the unmanned vehicles currently on the market, users must use their mobile devices and joysticks to wirelessly connect and control them. The itrack technology is to detect wireless signals (Wi-Fi, Bluetooth, The way of the mobile network) is to determine whether there is an intrusion of the drone in the restricted area; therefore, the trace of the unmanned vehicle can be detected whenever and wherever, even in the weather.
The user may think that "What should I do if there are other electromagnetic interferences in the same area?" In this case, the itrack system is also equipped with artificial intelligence technology to distinguish the types of radio waves from unmanned vehicles and mobile phones. What is the target and what is the interference, as long as the device in the area emits electromagnetic signals, this technology can be located and discriminated.
In addition, itrack can also identify the detected drone label to determine whether the unmanned vehicle is legally flying in the area. It is understood that itrack can detect a straight line distance of up to 150 meters, and close-range detectives also reach the level of centimeters.
Mao Shaogang said that the technical characteristics of itrack can also be used for indoor positioning; although the industry can use existing infrastructure to support indoor positioning systems, the error value of such a way is large; but if it is desired to locate accurately, the cloth for the infrastructure The construction will be upgraded more, and the cost of construction and maintenance will be increased.
Even some users will want to introduce machine learning to enhance the benefits of indoor positioning. Then the owner must first collect environmental information to import into the system to learn, and the cost of front-loading will generate another expense.
The itrack technology can be set up immediately, used immediately, without the pre-training of machine learning, and the hardware deployment is not too intensive; far more efficient than the introduction of iBeacon and the cost is lower, Mao Shaogang said that itrack and iBeacon technology Compared with the same accuracy standard, the team's technology import cost can be 30% less than iBeacon.
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