The invention provides a
radio frequency positioning method, device and
system. The
radio frequency positioning method comprises the following steps that radio-frequency signals sent out by an electronic tag of a detected object are received at different
azimuth angles and
pitch angles in a first position; the radio-frequency
signal with the
maximum intensity value is screened out from the received radio-frequency signals, and the
azimuth angle and the
pitch angle which correspond to the radio-frequency
signal with the
maximum intensity value are determined as the
azimuth angle and the
pitch angle, relative to the first position, of the detected object; the relative distance, relative to the first position, of the detected object is obtained according to the radio-frequency
signal with the
maximum intensity value at the first position; according to the geographical coordinates of the first position, the azimuth angle and the
pitch angle, relative to the first position, of the detected object, and the relative distance, relative to the first position, of the detected object, the geographical coordinates of the detected object are generated.