Methods, systems, and apparatus, including medium-encoded computer program products, for 3D flight tracking of objects includes, in at least one aspect, a method including obtaining (from a camera) two dimensional image data of a golf ball in flight; obtaining radar data (originating from a Doppler radar device) of the golf ball in flight; fitting a curve to the radar data to generate a continuous function of time for the radar data of the golf ball in flight; determining three dimensional location information of the golf ball in three dimensional space including, for each of multiple camera observations, finding a radial distance using the continuous function and a time of the camera observation, finding a depth distance, finding a horizontal distance and finding a vertical distance to the golf ball; and providing the three dimensional location information of the golf ball in three dimensional space to augment other data before display.