Portable positioning devices and methods for obtaining a geospatial position

A portable positioning device for obtaining a geospatial position of a point of interest, said portable positioning device comprising:

• an antenna adapted to receive satellite information signals from a global navigation satellite system, GNSS, said antenna having a phase center and an antenna axis being an axis passing through said phase center and perpendicular to a plane in which said antenna extends;
• a levelling detector arranged relative to said antenna for detecting whether said antenna is positioned horizontally;
• an imaging device having an optical axis, wherein the imaging device is inclined with respect to the antenna such that the optical axis intersects the antenna axis and wherein a projection center of the imaging device, through which the optical axis passes, is located on the antenna axis;
• a display unit for assisting in sighting said point of interest using a sighting axis and for assisting in identifying whether said antenna is horizontally levelled based on an input from said levelling detector, wherein said sighting axis passes through said projection center and a fiducial marker provided in a field of view of the imaging device for assisting in sighting the point of interest, said fiducial marker being located on the antenna axis;
• and
• a processing unit for triggering computation of the geospatial position of said point of interest based on the information satellite signals received at said antenna for a position of the positioning device for which an indication that said antenna is horizontally levelled and that said point of interest is along said sighting axis is received.