Patent ID: 8717232

Claim:
An apparatus for determining position data for a point of interest, comprising: a display screen configured to display image data and orientation data to assist a user in positioning the apparatus; a GNSS antenna configured to receive position data from a plurality of satellites; at least one communication antenna configured to receive positioning assistance data related to the position data from a base station; at least one receiver coupled to the GNSS antenna; orientation circuitry configured to generate orientation data of the apparatus based upon a position of the apparatus related to the horizon; a camera configured to obtain image data concerning the point of interest for display on the display screen; and positioning circuitry, coupled to the at least one receiver, the camera, and the orientation circuitry, configured to: determine a GNSS antenna height estimation based on a size of the point of interest in the image data; determine an alignment error between an optical axis of the camera and the point of interest based on the image data; and determine a position for the point of interest based on at least the position data, the positioning assistance data, the orientation data, the GNSS antenna height estimation, and the alignment error between the optical axis of the camera and the point of interest.