This invention discloses one method based on Big double star system rapid measurement pose, which comprises the following steps: at initial time t0, putting antenna one and two along the measurement direction needed to get the vector r(t0) length L and t0 first set load wave phase observation values; changing the original moving base line length as k1 times along base line direction to get the new vector k1r(t0) to get second set of load wave phase valuesDeltphi<1</SUP>12(t1),Deltphi<2</SUP>12(t1); getting several groups of observations to get the direction angle phi and pitching angle thetato fulfill the measurement. |