METHOD FOR NAVIGATION-INFORMATION SUPPORT OF AUTONOMOUS UNMANNED UNDERWATER VEHICLE OF LARGE AUTONOMY PERFORMING EXTENDED UNDERWATER CROSSING Russian patent published in 2019 - IPC G01S3/808 

FIELD: ocean engineering.

SUBSTANCE: invention relates to underwater engineering and, in particular, to technologies for creation of navigation and information exchange means for autonomous unmanned underwater vehicle (AUUV) with high autonomy and range of action, for example, when performing missions under ice, in the absence of an accompanying carrier vessel (CV) and the need to minimize additional external navigation equipment. Technical result is achieved due to use of a rare network of reference beacons with a long range of action and absence on board of the AUUV of the overall and power consuming equipment for transmission of the low-frequency channel of hydroacoustic communication. Method of navigation-information support of autonomous unmanned underwater vehicle of large autonomy, performing extended underwater transition, at which coordinates of start point of AUUV are established. Support beacons are equipped with high-frequency (HF) short-range action and low-frequency (LF) long range of action of hydroacoustic transceiving and transmitting means of data exchange with AUUV. Besides, AUUV is equipped with HF hydro-acoustic means of reception and transmission and low-frequency hydroacoustic reception means for information exchange with reference beacon. Besides, AUUV is equipped with software for its onboard control system implementing AUUV output to reference beacon based on reception and processing of data received from reference beacon in low-frequency range. Thereafter, the long-range reference beacons are placed along the route of the planned observations, and the period of observations is determined by the time during which the generated coordinate calculation error will be comparable with the range of the low-frequency communication channel. Correction of the counted coordinates is carried out by comparing said coordinates with the calculated coordinates of the nearest reference beacon with known coordinates based on reception and processing of data received from the reference beacon in the high-frequency range. Control commands are received from the remote CP on board of the AUUV by receiving and processing data transmitted from the reference beacon in the high frequency range. Performing telemetry data transmission to remote CP from AUUV board by receiving and processing data received by reference beacon in high-frequency range, as well as satellite navigation and communication with remote control station.

EFFECT: providing navigation and information support for large autonomy of an AUUV performing an extended underwater crossing, and reducing weight and size and power consumption of navigation hydroacoustic equipment placed aboard the AUUV.

1 cl, 2 dwg