Architecture of a Hydroacoustic Navigation System with a Cotton Basis for Conversion of the Underwater Apparatus to the Docking Module

The  object of the study are the principles and methods  of hydroacoustic  reduction  of an autonomous  underwater  vehicle to a carrier. When solving the problem of constructing a hydroacoustic  navigation  system (HNS), the main  systemic issues are the choice of an acceptable method for locating an object in the reduction zone and estimating the options of the proposed navigation system from the point of view of technical implementation. The  feasibility of constructing the equipment  of a highfrequency hydroacoustic  reduction system in the form of a combined  information  and navigation antenna  system combined  in base, in which hydroacoustic  navigation systems with a short base can be used, is justified; as navigation it is suggested to use data signals exchanged  between the docking module  and the autonomous  underwater  vehicle based on the results of measuring the mutual  navigation  options. The  developed  sample of equipment  is part of a multifunctional network  of hydroacoustic communication and should ensure that in a near zone at distances not exceeding 300 m, an autonomous  underwater  vehicle is brought into contact  with the carrier. For this purpose, mutual  determination  of the distance  and  angular  position of the docking module  of the carrier and the autonomous  underwater  vehicle relative to each other is carried out. Determination  of the distance and angular position of the docking module of the carrier and the autonomous  underwater vehicle relative to each other is accompanied  by the transfer of data  between  them  along the hydroacoustic  communication channel.  The  proposed sample of high-frequency hydroacoustic  reduction system (HHRS) equipment  of short-range action is intended  for operation as part of a complex of technical  means  providing underwater  docking of an autonomous  underwater  vehicle with a carrier. The  obtained  quantitative  options of short-based  HNS are the  initial  indicators  of the  first approximation  when  selecting the necessary parameters of the navigation  signal and developing the structure of the AGSS  designed to solve the problem of automatically bringing the autonomous  underwater  vehicle (AU V ) to the docking module  (DM)  of the given carrier.

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