Speed Enhancement Technique for Pulsed Laser Rangefinders Based on Lagrange's Theorem Using an Undersampling Method. - Masahiro Ohishi; Fumio Ohtomo; Masaaki Yabe; Mitsuru Kanokogi; Takaaki Saito; Yasuaki Suzuki; Chikao Nagasawa (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2011)