Circuit schematic
for the half-plane horizon detector. Each side of the tilt detector uses this
horizon detector—comprising of 33 photodetector elements, and 32 edge detector
cells—sequentially interrogated until the horizon (i.e., edge) is detected.
The address is then asserted onto a precharged bus to encode a digital position
output. The shaded region is repeated so as to form a 32-element array.
