Development and calibration of an underwater acoustic data collection system for monitoring coarse bedload transport

Goodwiller, Bradley T.; Wren, Daniel G.; Surbeck, Cristiane Q.

doi:10.1016/j.apacoust.2019.06.019

Cited by 7 publications

(4 citation statements)

References 15 publications

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“…Data fusion theory studies the optimal fusion of related data, unrelated data, definite data, uncertain data, and nonlinear data and applies it to control problems [18][19][20]. Data fusion methods include centralized and sequential methods.…”

Section: Basic Way Of Data Fusionmentioning

confidence: 99%

Tracking Control of the Dynamic Input-Output Economic System Based on Data Fusion

Chen

Dai

2022

Security and Communication Networks

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In recent years, under the background of stable economic operation, people's research on economic systems has become increasingly popular. The dynamic input-output model reflects the change and development process of the input-output relationship of the economic system over a period of time. The main purpose of tracking control is to design a suitable controller so that the output of the control system can track the output of the reference system as much as possible. In the economic system, data is an important factor. Based on this, this paper mainly studies the tracking control of dynamic input-output economic system based on data fusion. This research takes the data fusion of the dynamic input-output economic system as the starting point and takes the optimal control and tracking of the economic system as the research object of this research. Based on data fusion technology, a new dynamic input-output economic system tracking and control is proposed. This paper studies the finite-time optimal tracking control of linear systems. Through numerical examples, comparing the finite-time and infinite-time optimal control simulation results, it is proved that the algorithm can achieve good tracking control. Experimental data shows that the optimal and suboptimal performance indicators for a limited time are 0.7729412 and 1.5687310, respectively. Therefore, compared with the infinite-time optimal control, the performance loss and the final tracking error of the suboptimal control proposed in this study are reduced.

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Section: Basic Way Of Data Fusionmentioning

confidence: 99%

Tracking Control of the Dynamic Input-Output Economic System Based on Data Fusion

Chen

Dai

2022

Security and Communication Networks

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“…However, such traps are often rapidly filled, they affect the hydraulic conditions and provide no detail on the temporal (within events) and spatial (across the section) variations of bedload transport [ 20 , 32 ]. Progress with passive acoustic sensors over the past 20 years opened new perspectives for the continuous monitoring of bedload transport [ 33 , 34 , 35 , 36 ]. Bedload produces acoustic (in the water column) and elastic (in media such as the riverbed) waves that are measurable with acoustic sensors.…”

Section: Introductionmentioning

confidence: 99%

Bedload Transport Monitoring in Alpine Rivers: Variability in Swiss Plate Geophone Response

Antoniazza

Nicollier

Wyss

et al. 2020

Sensors

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Acoustic sensors are increasingly used to measure bedload transport in Alpine streams, notably the Swiss plate geophone (SPG) system. An impact experiment using artificial weights is developed in this paper to assess the variability in individual plate response and to evaluate the extent to which calibration coefficients can be transferred from calibrated plates to non-calibrated plates at a given measuring site and/or to other measuring sites. Results of the experiment over 43 plates at four measuring sites have notably shown (a) that the maximum amplitude (V) recorded by individual plates tends to evolve as a power law function of the impact energy (J), with an exponent slightly larger than 1, for all the plates at all measuring sites; (b) that there is a substantial propagation of energy across plates that should be taken into account for a better understanding of the signal response; (c) that the response of individual plates is in most cases consistent, which suggests that calibration coefficients are comparable within and in between measuring sites, but site-specific and plate-specific variabilities in signal response have to be considered for a detailed comparison.

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“…Mao et al (2016) also presented the design for a steel plate sensor that was tested both in the laboratory flume and in the field. Goodwiller et al (2019) have presented detailed design and construction of a robust microphone housing system that they field-tested in Colorado, USA, and also refer to the challenge of eliminating extraneous noise sources, including recreational watercraft. Of course, remote field locations should suffer less disturbance of this kind.…”

Section: III Recording Bedload Movement In Riversmentioning

confidence: 99%

Acoustic methods in physical geography: Applications and future development

Dunkerley

2022

Progress in Physical Geography: Earth and Environment

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Sound is produced by many geomorphic and hydrological processes, such as rockfalls and landslides, ocean waves, fluvial flood flows and collisions among moving bedload clasts. In these and other areas of study, acoustic methods have found useful application to detect and quantify the operation of important landscape processes. In some, such as the recording of river discharge, the occurrence of rare events such as exfoliation or the presence and movement of dust devils (willy-willies), the use of acoustic methods is still in a relatively early stage of development and testing. The use of acoustic methods in the recording of rainfall occurrence and intensity is also developing and has the capacity to yield data with higher temporal resolution than can be achieved using conventional rain gauges. Novel acoustic methods include the analysis of the sound recorded by security cameras, which potentially form a vast network of observing stations. The frequencies of sound generated by land-surface processes include audible sound, ultrasound and infrasound at frequencies below the human hearing range. All appear to provide opportunities for further development of useful research tools and methodologies.

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Development and calibration of an underwater acoustic data collection system for monitoring coarse bedload transport

Cited by 7 publications

References 15 publications

Tracking Control of the Dynamic Input-Output Economic System Based on Data Fusion

Tracking Control of the Dynamic Input-Output Economic System Based on Data Fusion

Bedload Transport Monitoring in Alpine Rivers: Variability in Swiss Plate Geophone Response

Acoustic methods in physical geography: Applications and future development

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