An analog differential triangulation system reaches nanometer depth precision at 1.42 m standoff with a 10 cm baseline, improving several orders over camera-only methods while remaining two orders above the shot-noise limit.
Farina, Signal Processing78, 61 (1999)
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Shot Noise Limited Triangulation
An analog differential triangulation system reaches nanometer depth precision at 1.42 m standoff with a 10 cm baseline, improving several orders over camera-only methods while remaining two orders above the shot-noise limit.