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Navigation and location method based on utilization of signal strength in underwater acoustic communication network

An underwater acoustic communication network and signal strength technology, applied in the field of navigation and positioning, can solve the problems of relying on synchronous clocks and high power consumption of equipment, and achieve the effects of reducing power consumption of equipment, reducing required time, and improving positioning speed

Active Publication Date: 2018-11-23
HARBIN ENG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method can realize the rapid positioning process in the network, but it needs to continuously send time interval signals between nodes, the device consumes a lot of power, and still relies on the synchronous clock

Method used

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  • Navigation and location method based on utilization of signal strength in underwater acoustic communication network
  • Navigation and location method based on utilization of signal strength in underwater acoustic communication network
  • Navigation and location method based on utilization of signal strength in underwater acoustic communication network

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Embodiment Construction

[0032] Embodiments of the present invention will be further described below in conjunction with the accompanying drawings:

[0033] The invention aims to propose a positioning method using signal strength positioning in a distributed underwater communication network, and the nodes can be divided into fixed nodes and cooperative target nodes. The network of the present invention includes no less than three fixed nodes receiving underwater acoustic signals, and one positioning entity whose position is unknown. Wherein, each node includes a signal receiving module, a power amplifier module, a transmitting module, and a transceiving and displacing transducer; the positioning entity carries a distance calculation program and a positioning calculation program. The positioning entity sends a communication signal with known signal strength in water, compares the signal strength received by the node with the transmitted signal strength, and calculates the signal propagation loss during...

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Abstract

The invention discloses a navigation and location method based on signal strength in a communication network, which is mainly applied to underwater location. The invention proposes a method for measuring distance by using signal propagation loss between a location entity and a node; by receiving the signal strength of the signal of the location entity between the nodes, the propagation loss coefficient and the background environment noise are measured in a target marine environment; a received signal can be used for quickly obtaining the distance between the location entity device and the fixed node and quick location is carried out. The method is free from the dependence of the traditional time location method on the clock and the synchronization process, reduces the demand of the networkfor the location entity device and the node, can use the communication signal to carry out strength calculation; in the communication process, the distance between the location entity and the node ismeasured in real time; and low-power-consumption quick location in the underwater communication network is achieved.

Description

technical field [0001] The invention relates to the field of underwater acoustic positioning, in particular to a navigation and positioning method using received signal strength of network communication signals. Background technique [0002] After decades of development, the underwater communication network has reached a certain scale, and the positioning technology in the underwater communication network is widely used in submarines, underwater unmanned underwater vehicles UUV, and underwater autonomous underwater vehicles AUV. The traditional underwater positioning methods mainly include the AOA positioning method based on the signal angle of arrival, the TOA method based on the signal time of arrival, and the TODA positioning method based on the signal time difference of arrival. In the underwater communication network, the volume space and the For equipment power consumption and other requirements, a single transducer is usually used to receive / send signals, and the posi...

Claims

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Application Information

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IPC IPC(8): H04W4/024H04W4/029H04W64/00H04B13/02
CPCH04B13/02H04W4/024H04W4/029H04W64/006Y02D30/70
Inventor 乔钢赵晨周峰刘凇佐孙宗鑫
Owner HARBIN ENG UNIV
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