An approach to minimize aircraft motion bias in multi-hole probe wind measurements made by small unmanned aerial systems

Abstract. A multi-hole probe mounted on an aircraft provides the air velocity vector relative to aircraft, requiring knowledge of spatial orientation (e.g., Euler angles), translational and angular translate this information Earth-based reference frame determine wind vector. As is typically order magnitude higher than velocity, extracted very sensitive multiple sources error including misalignment coordinate system axes, sensor in time measurements addition aerodynamic distortion field by aircraft. Here, we present approach which can be applied after a flight identify correct biases may introduced into final measurement. The was validated using ground reference, different same at times. results indicate significant reduction variance frequencies correspond motion.