Vehicle electronic identifier identification method and system

The invention discloses a vehicle electronic identifier identification method and system, and the method comprises the steps: a reader transmits a Query instruction to stipulate a frame length, a tag in the identification range of the reader randomly selects a time slot in the frame length range to respond to the instruction of the reader, and returns an information packet; if the collision time slot exists, obtaining an observation value in the previous frame, and obtaining a label number according to the observation value in the previous frame and a preset label estimation algorithm; obtaining the time slot number of the next frame according to the number of the labels and the number of the antennas; and if the number of the antennas is not greater than the number of the tags in the next frame time slot, separating tag signals by adopting a second preset separation method, and performing vehicle identification according to the separated signals. And a proper separation method is selected to separate out the