FIELD: geophysical research methods.
SUBSTANCE: in order to install a marine range of bottom stations, three bottom stations are lowered simultaneously from the stern of the vessel and from different sides, in which two more bottom stations are additionally lowered to the seabed. The carrier vessel is made in the form of an autonomous unmanned underwater vehicle, equipped with a receiver-indicator of satellite navigation systems, hydroacoustic navigation equipment and a scanning sonar. The bottom stations are installed from the depth horizon as close as possible to the seabed, taking into account the safety of navigation of the underwater vehicle, determined by scanning sonar, which also determines the installation depth of the bottom station and selects a bottom section with a uniform and homogeneous profile; when installing the first bottom station it is positioned by mutual direction finding on the hydroacoustic communication channel when the underwater vehicle moves to the sea surface, upon reaching which the coordinates of the underwater vehicle are determined by means of the receiver-indicator of satellite navigation systems; when the underwater vehicle moves to the sea surface, the sound velocity propagation time is measured, which are all broadcast in the memory of the bottom station. By means of bottom stations, a square is formed on the seabed, at the intersection of the diagonals of which the fifth bottom station is installed, when seismic signals are recorded, the underwater vehicle is placed on the sea surface, mutual direction finding is performed by forming a paired parallax spherical coordinate system.
EFFECT: increased accuracy while ensuring an equal distance between bottom stations.
