The invention discloses a large-sized
underwater hoisting structure position posture real-time measuring device, which belongs to the field of
underwater engineering. To be specific, the device adopts a short-base-line acoustic location principle, the time
delay of a
signal transmitted from three to four acoustic beacons which are fixed on stationary points of the underground hoisting structure to four receiving points of a location matrix is measured so as to calculate the distance from the underground acoustic beacons to the receiving points, the location of the underground
beacon can be realized through a circular intersection method, the position and posture of the underground structure relative to the location matrix can be measured through the positions of three to four beacons, then the location matrix is measured through
real time kinematic (RTK), so that the position and posture of the
underwater structure under a ground coordinate
system can be obtained, and the underwater construction can be effectively instructed. Due to adopting the device, different defects by the traditional underwater measuring method adopting a measuring
tower way can be effectively solved, the construction time can be effectively shortened while the
engineering quality is improved, and the construction range is enlarged.