The angle of shadows in the image was used to ... it was possible to infer the azimuth and elevation of the camera. Positions of military satellites aren’t made public, but amateur tracking ...

The azimuth axis rotates on a rear wheel bearing from a Chevy, the elevation axis uses cheap pillow blocks, and the frame is welded from scrap angle iron and tubing. A NEMA-23 stepper with 15:1 ...

In order to obtain intersection angles (azimuth: longitude and elevation: latitude) independently from the overall body's movements, the sphere was considered attached to trunk. Humerus intra-extra ...