DIRECTION ESTIMATION USING SINGLE GPS ANTENNA AND MEASURED SIGNAL STENGTH

摘要

A method of estimating the azimuthal orientation of a camera having an attached antenna. The antenna has a predetermined directional radiation pattern which is anisotropic in the azimuthal plane when the camera is held in a normal orientation for photography. The method comprises: measuring the strength of signals received at the antenna from each of a plurality of transmitters; obtaining the position of each of the plurality of transmitters; obtaining the position of the camera; predicting the expected strength of each of the received signals; and estimating the azimuthal orientation of the camera based on the obtained positions of the camera and the plurality of transmitters, the measured signal strengths, the antenna radiation pattern, and the predicted signal strengths.