According to one embodiment, a system includes a radar device, a storage device and a controller. The radar device is configured to transmit a first radio wave to an object in a direction of a first angle of the object. The storage device is configured to store first information capable of specifying that a radio wave is transmitted to the first angle of the object by the radar device. The controller is configured to control a direction of a second radio wave to be transmitted by the radar device after the transmission of the first radio wave to a second angle of the object different from the first angle.