Patent ID: 11668827

Abstract:
Implementations of the present invention disclose an unmanned aerial vehicle ranging method, apparatus and an unmanned aerial vehicle. The method includes: controlling, by the unmanned aerial vehicle, to transmit, to a ground, a first modulated light whose frequency is a first modulation frequency, acquiring a first phase deviation between a received first modulated light and the transmitted first modulated light, and calculating a first to-ground distance of the unmanned aerial vehicle according to the first phase deviation and the first modulation frequency; controlling to transmit, to the ground, a second modulated light whose frequency is a second modulation frequency, acquiring a second phase deviation between a received second modulated light and the transmitted second modulated light and a second modulated frequency, and calculating a second to-ground distance of the unmanned aerial vehicle according to the second phase deviation; and calculating a final to-ground distance of the unmanned aerial vehicle according to the first to-ground distance and the second to-ground distance.