A celestial guidance system uses radio imaging of celestial bodies including the galactic plane received by an interferometric antenna array to provide robust navigation during times of cloud cover or interrupted GPS service.

A star map identification method based on a composite calibration star grid pattern is provided, which includes obtaining an observation star map, selecting a host star to be identified based on the observation star map; constructing the grid pattern featu...

A system and method of determining a position of an electronic device is presented herein. An image is displayed having at least one celestial object and a celestial object indicator for selecting a celestial object. The celestial object indicator is overl...

Device has second telescope (2) with third line of sight (L3) parallel to first or second line of sight (L1, L2) of first telescope (1), and second optical module (6) for collecting third light beam from stars and parallel to third line of sight and delive...