Bistatic optoelectronic communication systems. Field experiments in artificial and natural water reservoirs

Bistatic optoelectronic communication systems: Field experiments in artificial and natural water reservoirs

Atmospheric and Oceanic Optics ◽

10.1134/s1024856017040042 ◽

2017 ◽

Vol 30 (4) ◽

pp. 366-371 ◽

Cited By ~ 6

Author(s):

V. V. Belov ◽

V. N. Abramochkin ◽

Yu. V. Gridnev ◽

A. N. Kudryavtsev ◽

M. V. Tarasenkov ◽

...

Keyword(s):

Natural Water ◽

Communication Systems ◽

Field Experiments ◽

Water Reservoirs

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Atmospheric bistatic optoelectronic communication systems: field experiments

10.1117/12.2074768 ◽

2014 ◽

Author(s):

Vladimir V. Belov ◽

Mikhail V. Tarasenkov ◽

Vladimir N. Abramochkin

Keyword(s):

Communication Systems ◽

Field Experiments

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Application of a Mise-à-la-Masse approach to detect the leak of water reservoirs

10.5194/egusphere-egu2020-7736 ◽

2020 ◽

Author(s):

Chengpeng Ling ◽

Andre Revil

Keyword(s):

Water Resources ◽

Inverse Modeling ◽

Field Experiments ◽

Inversion Method ◽

Inversion Algorithm ◽

Water Reservoirs ◽

Weighting Matrix ◽

Potential Electrode ◽

Reference Potential ◽

Source Current

<p>Water reservoirs with synthetic geomembranes are widely used for storing water resources and chemical solutions in the agricultures and industries, respectively. Leakages of water reservoirs are respondible for the loss of water resources and the spread of contaminants. It is usually difficult to perceive and localize the leakage of water reseroirs. As a cheap, non-invasive, and non-destructive geophysical technique, the mise-&#224;-la-masse method is used to detect leaks of water reservoirs. In principle, the positive (A) and negative (B) current electrodes are placed inside and outside the reservroir, respectively. A number of voltage electrodes are located around the reservoir and potentials relative to a remote reference potential electrode are measured. In the data processing, a method silimar to the self-potential inversion method is proposed to inverse the voltages recorded around the reservoir. Forward modeling was first carried out to simulate the mise-&#224;-la-masse measurement. A kernel matrix (i.e., the collection of Green&#8217;s funstions) from forward modelings was imported to the inverse modeling. In inverse modeling, a global objective function with a data misfit term and regularization term is minimized to invert the measured voltages. An initial model based on the distribution of root mean square values between the observation and the simulation data is first given to the inversion algorithm. A weighting matrix and a minimum support function is used to strengthen the detection resolution of the leak of reservoirs. The distributions of source current density from the inverse modeling are used to provide the best estimated of the positions of leaks. Two laboratory and one field experiments are used to verify the effectiveness and reliability of the mise-&#224;-la-masse method. The results show that the proposed method and inversion algorithm can localize a single leak. For a leak with a crack shape, the inversion algorithm detects the location of the leak with a small bias. Effects of the leak size and an undetected condutive zone on the inversion results are further analyzed. For the side leakage, the inverse algorithm overestimated the depth for a small-size leak, while is slightly underestimated the depth of big leaks. For the bottom leakage, effects of the leak size on inversion results are negligable. An undetected conductive zone could significantly distort the inversion results. This study provides an efficient approach to detect the leakage of reservoirs. In addtion, for the leakage of leachate in landfills or mine tailings, the mise-&#224;-la-masse method is also a promising method.</p>

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Use of cambrian clay in cementing radioactive sludge deposits from natural water reservoirs

Atomic Energy ◽

10.1007/s10512-010-9336-6 ◽

2010 ◽

Vol 109 (2) ◽

pp. 143-147

Author(s):

M. S. Oleinik ◽

V. N. Epimakhov ◽

E. B. Pankina

Keyword(s):

Natural Water ◽

Water Reservoirs

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Methodological approach to characterizing pollution of natural water bodies using satellite data with account of aggregation of finely dispersed mineral processing waste

Горная промышленность ◽

10.30686/1609-9192-2021-6-110-116 ◽

2022 ◽

pp. 110-116

Author(s):

S.P. Ostapenko ◽

S.P. Mesyats

Keyword(s):

Natural Water ◽

Methodological Approach ◽

Diffraction Method ◽

Raw Material ◽

Satellite Monitoring ◽

Observation Data ◽

Water Reservoirs ◽

Mineral Particles ◽

Murmansk Region ◽

By Products

The level of the environmental impact of the mining industry specifies the urgency of ecological management of the natural resources based on the satellite monitoring data. The high content of the suspended mineral particles in the industrial waters and the requirement to reduce their access to the natural water reservoirs determine the need to characterize the mininginduced pollution that can be carried out correctly with due account of the aggregate stability of dispersions. In spite of the theoretical concepts, prediction of the particles aggregation is limited by a lack of data on their interaction parameters. In order to parametrize the interactions in the mineral-water-mineral system it is proposed to use experimental data on aggregation of finely dispersed particles, obtained by the laser diffraction method in the equilibrium conditions. For this purpose the procedure of the experimental appraisal of the effective Hamaker constants has been elaborated using ores of developed deposits of the Kola mining complex as an example. The authors have studied the conditions of the surface layer of natural water reservoirs in the most industrially developed central part of the Murmansk region and defined characteristics of pollution with finely dispersed by-products of the mineral raw material treatment, according to the satellite observation data of the spatial distribution of the normalized difference turbidity index. The authors have established that the least propagation of the pollution into the natural water reservoirs is observed in the case of the apatite-nepheline ores processing by-products, which is explained by the effective aggregation of the finely dispersed nepheline particles. The proposed approach to apply data on mineral particles aggregation for interpretation of the satellite observations does not require carrying out in-situ observations and makes it possible to identify the mining-induced pollution of natural water reservoirs in industrial territories using suspended particles.

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Bistatic Underwater Optical-Electronic Communication: Field Experiments of 2017-2018

Light & Engineering ◽

10.33383/2018-033 ◽

2019 ◽

pp. 97-102

Author(s):

Vladimir V. Belov ◽

Vladimir N. Abramochkin ◽

Yuri V. Gridnev ◽

Andrei N. Kudryavtsev ◽

Mikhail V. Tarasenkov ◽

...

Keyword(s):

Laser Radiation ◽

Lake Water ◽

Communication Systems ◽

Electronic Communication ◽

Field Experiments ◽

Field Conditions ◽

Valid Signal ◽

Source Of Information

The article describes the results of experiments with underwater bistatic optoelectronic communication systems with scattered laser radiation as the source of information and the valid signal. The information reception distance of up to 40 m was gained in field conditions of lake water.

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