%0 Journal Article %T Improvement in airborne position measurements based on an ultrasonic linear-period-modulated wave by 1-bit signal processing %A Thong-un, Natee %A Hirata, Shinnosuke %A Kurosawa, Minoru K. %J Japanese Journal of Applied Physics %V 54 %N 7S1 %P 6 %@ 0021-4922 %D 2015-07-01 %~ DeepDyve