Sourceless orientation sensor

摘要: A sourceless orientation sensor having an azimuthal which determines the relative to a planetary magnetic field, and tilt direction magnitude of displacement from vertical using gravitational field. The includes transparent gas viscous fluid in spherical shell, light emitting diode (LED) mounted at top four photodetectors bottom shell. As is rotated path cone emanating LED refracting gas/fluid interface altered, thereby altering intensity incident on photodetectors. processed provide angles. thin disk floats damp surface waves caused by reorientation device. time sequence orientations may be interpreted provided gesture sensing