NON-ITERATIVE CALIBRATION FOR ACCELEROMETERS WITH THREE NON-ORTHOGONAL AXES AND CROSS-AXIS INTERFERENCE THOMAS FORSBERG 1 , NIKLAS GRIP 2 , AND NATALIA SABOUROVA 1 1 Department of Civil, Environmental and Natural Resources Engineering Division of Structural and Construction Engineering Lule˚ a University of Technology SE-971 87 Lule˚ a, Sweden E-mail : Thomas.Forsberg@ltu.se,Natalia.Sabourova@ltu.se 2 Department of Engineering Sciences and Mathematics Division of Mathematics Lule˚ a University of Technology SE-971 87 Lule˚ a, Sweden E-mail : Niklas.Grip@ltu.se