Improved 2-Ray Model for Overwater Propagation Channels: Modeling the Instantaneous Variations in the Received Signal Strength

Dahman, Ghassan; Couillard, Denis; Grandmaison, Marie-Eve; Poitau, Gwenael; Gagnon, François

doi:10.1109/lwc.2019.2897664

Cited by 7 publications

(3 citation statements)

References 6 publications

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“…The model is suitable for different carrier frequencies, transmission distances, and sea states [89]. More recently, in [90], the authors performed ship-to-shore propagation measurements at the 1.39 GHz band and the 4.5 GHz band, and proposed a model to capture the behaviour of small-scale fading at different frequency bands.…”

Section: A Characteristics and Models Of Maritime Channelsmentioning

confidence: 99%

Hybrid Satellite-Terrestrial Communication Networks for the Maritime Internet of Things: Key Technologies, Opportunities, and Challenges

Wei

Feng

Chen

et al. 2021

IEEE Internet Things J.

194

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Section: A Characteristics and Models Of Maritime Channelsmentioning

confidence: 99%

Hybrid Satellite-Terrestrial Communication Networks for the Maritime Internet of Things: Key Technologies, Opportunities, and Challenges

Wei

Feng

Chen

et al. 2021

IEEE Internet Things J.

194

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“…These variations in received signal strength mainly arise from the constructive or destructive interference between the LOS and water-reflected paths that have different lengths. This constructive/destructive interference patterns are often modelled using the two-ray propagation model [3,8]. The raw RSSI data presented in Figs.…”

Section: Aggregated Resultsmentioning

confidence: 99%

Empirical evaluation of short-range wifi vessel-to-shore overwater communications

d’Orey

Gaitán

Santos

et al. 2022

Proceedings of the 16th ACM Workshop on Wireless Network Testbeds, Experimental Evaluation &Amp; CHaracterization

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Unmanned vehicles used in ocean science, defense operations and commercial activities collect large amounts of data that is further processed onshore. For real-time information exchange, the wireless link between the unmanned vehicle and onshore devices must be reliable. In this work, we empirically evaluate a WiFi link between an autonomous underwater vehicle on the surface and an onshore device under real-world conditions. This work allowed i) collecting a large-scale realistic dataset and ii) identifying major factors impairing communication in such scenarios. The TX-RX antenna alignment, the operation mode (manual vs automatic) and varying reflecting surface induced by AUV mobility lead to sudden changes (e.g. nulls) in the received signal strength that can be larger than 20 dB. This study provides useful insights to the design of robust vessel-to-shore short-range communications.

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“…The authors in [ 23 ] measured a near-shore wireless channel at 5 GHz, where the evaporation duct layer is assumed to be horizontally homogeneous. The authors in [ 24 ] conducted a 30 km maritime communication experiment and proposed a ray-tracing model to analyze large-scale fading. In [ 25 ], an 87 km maritime microwave measurement demonstrated that atmospheric ducts can enhance the received signal by more than 40 dB and revealed that the evaporation duct communication is feasible.…”

Section: Introductionmentioning

confidence: 99%

A Sliced Parabolic Equation Method to Characterize Maritime Radio Propagation

Wang

Zhou

et al. 2023

Sensors

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For maritime broadband communications, atmospheric ducts can enable beyond line-of-sight communications or cause severe interference. Due to the strong spatial–temporal variability of atmospheric conditions in near-shore areas, atmospheric ducts have inherent spatial heterogeneity and suddenness. This paper aims to evaluate the effect of horizontally inhomogeneous ducts on maritime radio propagation through theoretical analysis and measurement validation. To make better use of meteorological reanalysis data, we design a range-dependent atmospheric duct model. Then, a sliced parabolic equation algorithm is proposed to improve the prediction accuracy of path loss. We derive the corresponding numerical solution and analyze the feasibility of the proposed algorithm under the range-dependent duct conditions. A 3.5 GHz long-distance radio propagation measurement is utilized to verify the algorithm. The spatial distribution characteristics of atmospheric ducts in the measurements are analyzed. Based on actual duct conditions, the simulation results are consistent with the measured path loss. The proposed algorithm outperforms the existing method during the multiple duct periods. We further investigate the influence of different duct horizontal characteristics on the received signal strength.

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Improved 2-Ray Model for Overwater Propagation Channels: Modeling the Instantaneous Variations in the Received Signal Strength

Cited by 7 publications

References 6 publications

Hybrid Satellite-Terrestrial Communication Networks for the Maritime Internet of Things: Key Technologies, Opportunities, and Challenges

Hybrid Satellite-Terrestrial Communication Networks for the Maritime Internet of Things: Key Technologies, Opportunities, and Challenges

Empirical evaluation of short-range wifi vessel-to-shore overwater communications

A Sliced Parabolic Equation Method to Characterize Maritime Radio Propagation

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