Node localization with AoA assistance in multi-hop underwater sensor networks

Underwater Wireless Sensor Networks (UWSNs) offer a huge number of applications, most of which require tagging the sensed data with location information. This makes localization algorithms an essential part of UWSN design. This paper presents a comprehensive survey of the recently proposed literature on localization in UWSNs. The surveyed algorithms are evaluated based on a wide-ranging set of parameters which constitute the elementary features of a localization algorithm. Moreover, in order to familiarize the readers with the basic design of the surveyed algorithms, brief description of the mode of operations of each algorithm is presented along with its strengths and weaknesses. The algorithms are divided into two categories based on their computational design i.e., centralized and distributed. Each category is further subdivided into the algorithms that consider node mobility, and those that do not. Towards the end, we present our view on the future research directions in the area of localization in UWSNs.

Section: ) Distributed Localization Schemes Without Mobility Considementioning

confidence: 99%

A Comprehensive Survey of the Recently Proposed Localization Protocols for Underwater Sensor Networks

Islam

Park

2020

“…Combining (10), (16), and 17, the measurement equation of the method localization on the mobile node is…”

Section: Localization Modelmentioning

confidence: 99%

“…In the range-based localization technology, the unknown node realizes the estimation of the relative distance and azimuth between itself and the reference node via acoustic signals, and then uses the relevant algorithm to calculate the position [5]. Commonly used measurement methods for range-based localization include time of arrival (TOA) [6], time difference of arrival (TDOA) [7], [8], received signal strength (RSS) [9], angle of arrival (AOA) [10], and combinations of these methods.…”

Section: Introductionmentioning

confidence: 99%

A Hybrid Localization Algorithm Based on Doppler Shift and AOA for an Underwater Mobile Node

Hao

Xue

et al. 2020

To solve the problem of low accuracy of a mobile node localization in an underwater sensor network, this paper proposes a hybrid localization algorithm based on Doppler shift and angle of arrival (AOA) for the underwater mobile node (DAHL). This algorithm utilizes the Doppler frequency shift between the different signals received from the anchor node and the mobile node and the AOA measurement of the signal reflected by the mobile node to estimate the instantaneous position and velocity information of the mobile node through a two-stage algebraic method. In view of the existing measurement errors in the actual situation, the position and velocity estimation errors of the mobile node are optimized by introducing auxiliary parameters. Theoretical analysis and simulation experiments show that the DAHL method can effectively improve the localization accuracy of the mobile node. The localization accuracy of this algorithm can be close to the Cramér-Rao Lower Bound (CRLB) with the condition of small measurement errors.

“…Network topology control is one of the key technologies in UWSN research field. Due to the complicated underwater environment, the transmission of underwater acoustic signals are subject to such uncertain factors as high bit error rate, extended propagation time, intermittent interruption of links, which result in frequent changes of network topology and poor energy efficiency of UWSN [1]- [3].Therefore, considering the effects of energy consumption balance and energy efficiency on UWSN with High Performance, further study of the optimized network topology control algorithm can not only improve the communication efficiency of UWSN sensor nodes, but also prolong the network life cycle. It is also the basis of key technologies such as location of underwater sensor nodes, clock synchronization, Mac protocol and so on.…”

Section: Introductionmentioning

confidence: 99%

Topology Control Algorithm of Underwater Sensor Network Based on Potential-Game and Optimal Rigid Sub-Graph

Wei

Han

2020

Aiming at the problems of unbalanced energy consumption, redundant links, short life cycle in underwater sensor networks, a topology control algorithm for underwater wireless sensor networks based on potential-game and optimal rigid sub-graph is proposed. Firstly, based on the potential game theory, the topology control model of underwater sensor network is constructed, which considers network coverage, connectivity, transmission energy consumption, end-to-end delay, transmission success rate, node residual energy and so on. It is proved that the model is an ordinal potential game and has a Nash equilibrium solution. Then, the link weight function of node load and node residual energy is introduced, and the redundant links in the network are eliminated by using the principle of optimal rigid sub-graph.Simulation experiments and contrast analysis show that compared with other network models, the network topology model constructed in this paper has lowed node load and stronger energy balance, prolongs the life cycle of the network and more conforms to the underwater environment. INDEX TERMS redundant links, topology control, potential-game, optimal rigid sub-graph, life cycle.