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Laser Remote Sensing of Vegetation Cover Using Reflection Coefficients Measurement Data
Radiooptics # 03, May 2016
DOI: 10.7463/rdopt.0316.0840843
Remote Sensing Method of Petroleum Film Detection Using Two Laser Beams for Sounding a Sea Surface
Radiooptics # 06, November 2015
DOI: 10.7463/rdopt.0615.0817268
pp. 27-37
Laser Gas-Analyser for Monitoring a Source of Gas Pollution
Engineering Education # 10, October 2015
DOI: 10.7463/1015.0813348
pp. 221-234
Laser Altimeter Error for Measuring Ocean Surface Slopes
Radiooptics # 04, July 2015
DOI: 10.7463/rdopt.0415.0793187
pp. 36-46
Field Measuring Statistical Properties of Atmospheric Aerosol Inhomogenuity in Optical Spectral Band
Radiooptics # 05, September 2015
DOI: 10.7463/rdopt.0515.0793200
pp. 115-127
Laser Meter of Atmospheric Inhomogenuity Properties in UV Spectral Band
Radiooptics # 02, March 2015
DOI: 10.7463/rdopt.0215.0782060
pp. 32-46

Engineering Bulletin # 12, December 2014
УДК: 621.378:551.508
Detection Range Estimation of UV Spectral Band Laser Radar
Engineering Education # 11, November 2014
DOI: 10.7463/1114.0731582
pp. 482-496
Estimating a Wind Shear Detection Range for Different Altitude Levels in the Troposphere
Engineering Education # 06, June 2014
DOI: 10.7463/0614.0715345
The paper presents estimation of a sounding range of the airborne lidar in ultraviolet, visible, and near infrared spectral bands to solve a problem of wind shear detection for different altitude levels in the troposphere. It is shown that with the flying altitude rise there is a decrease of the sounding range, most of all, within the altitude of 5-10 km. This dependence is explained by the fact that in this range of altitudes there is a substantial decrease of aerosol scattering and extinction coefficients in the earth atmosphere with the increase of altitude. In  the lowest atmospheric layer the sounding range reaches maximum for  the wavelengths of 0.532 µm. With increase of flying altitude a difference between the sounding ranges for the wavelengths of 0.355, 9.532, and 1.54 µm decreases.
Сomparison of calculation procedure of minimum detectable energy for photomultiplier tube
Engineering Bulletin # 04, April 2014
УДК: 551.501
In this paper comparative analysis of calculation procedure of minimum detectable energy for photomultiplier tube in ultraviolet, visible and near infrared bands is considered. It is shown that calculation data of minimum detectable energy for photomultiplier tube in UV, visible band and near IR bands may be not equal for various calculation procedure. The difference in that calculation data the more, the more signal-to-noise ratio. As the spectral filter bandwidth, field of receiver or detection time are increased then minimum detectable energy for photomultiplier tube is increased and difference in that calculation data for various calculation procedure is decreased.
Experimentally Studied Laser Fluorescence Method for Remote Sensing of Plant Stress Situation Induced by Improper Plants Watering
Engineering Education # 04, April 2014
DOI: 10.7463/0414.0707937
The paper concerns a laser fluorescence method for vegetation monitoring. It presents the experimental study results of laser-induced fluorescence spectra of plants in stress situations caused by improper watering. It is shown that at 532 nm wavelength of fluorescence excitation a stress factor impact may cause both a magnification of fluorescent signal and a deformation of fluorescence spectrum profile.  An identifying factor to characterize deformation of laser-induced fluorescence spectrum profile can be a relationship of fluorescence intensities at two wavelengths, i.e. 685 and 740 nm. Measurement of fluorescent signal intensity and fluorescence spectrum profile can be a basis of the laser fluorescence method to detect the plant stress situations.
Сomparative analysis of wind correlation lidar sounding range in UV, visible band and near IR bands
Engineering Education # 02, February 2014
DOI: 10.7463/0214.0696580
The paper presents a comparative analysis of the sounding range of wind correlation lidar in ultraviolet, visible, and near infrared spectral bands. It shows that a visible spectral band is the most advanced one to provide a maximum sounding range of wind correlation lidar in earth atmosphere. If there are specific requirements for wind correlation lidar, for example, a requirement is that a wind correlation lidar should operate at the eye-safe laser sounding wavelength then the efficient work of wind correlation lidar may be maintained in ultraviolet and near infrared spectral bands with the sounding range reduced a little bit.
Laser fluorescent method for monitoring leaks from petrol pipes based on the neural network algorithm
Engineering Education # 01, January 2014
DOI: 10.7463/0114.0676410
УДК: 535.338.41
Current systems for monitoring leaks from petrol pipes can detect large leaks only, and their sensitivity limit is about 1% of the whole petrol pipe’s capacity. In this paper, a problem of remote detection of small leaks (less than 1%) from petrol pipes was considered. One of possible variations of such a system is a monitoring system of oil pollution at the earth surface along the petrol pipe. In this paper experimentally obtained data such as fluorescence spectra of oil products (crude oil, light-end oil products, heavy oil products), various earth surfaces (soil, vegetation, water, asphalt) and oil products spilled over various earth's surface were used for the excitation wavelength of 266 nm. It was shown that use of the laser method based on detection of fluorescence radiation within three narrow spectral bands and a neural network algorithm of measured data processing allowed one to detect oil pollution on the earth surface with a probability of correct classification close to 1 and low probability of false alarm.
Remote control of plant stress at fluorescence excitation within the blue spectral range
Engineering Education # 01, January 2014
DOI: 10.7463/0114.0636811
УДК: 504.064.36
The authors analyzed laser-induced fluorescence spectra of healthy vegetation and vegetation under stress at fluorescence excitation within the blue spectral range. It was shown that a use of fluorescence excitation within the blue spectral range and the registration of fluorescent radiation in three narrow spectral ranges with central wavelengths of 680, 690 and 740 nm allowed one to detect reliably whether the vegetation is under stress. Ratios of the intensity of fluorescence radiation at the wavelengths of 680, 740 nm and at the wavelengths of 690, 740 nm were used as the identifying factors of plant stress.
Quantitative gas analysis of complex multicomponent mixtures
Engineering Education # 10, October 2013
DOI: 10.7463/1013.0615247
This paper deals with a comparative analysis of algorithms for regenerating concentration of gases in complex multicomponent mixtures by means of multispectral laser measurements. Signal processing methods for complex multicomponent mixtures based on the Bayesian assessment of a solution and the projective method are described in this work. The results of the mathematical simulation show that usage of the Bayesian assessment for a solution of the laser gas analysis system of equations allows to solve a problem of regenerating concentration of gases for complex multicomponent mixtures with smaller errors than usage of the projective method. 
Comparative analysis of input signal power of laser systems for target location and ultraviolet vision
Engineering Education # 08, August 2013
DOI: 10.7463/0813.0587120
This paper presents results of a comparative analysis of input signal power of laser systems for target location and ultraviolet vision. It was shown that the spectral band of 300-400 nm is promising for laser systems of the ultraviolet range operating in the earth atmosphere. Within the spectral band of 300-400 nm coefficients of ground reflection have greater values, and coefficients of atmospheric attenuation have smaller values then they do within the spectral band of 200-300 nm. The closer the wavelength gets to the value of 300 nm, the less background sun noise becomes.
Experimental studies of laser fluorescence method for remote control of plant stress situation induced by soil pollution
Engineering Education # 05, May 2013
DOI: 10.7463/0513.0565060
The article describes an experimental setup for studying the laser fluorescence method for control of stress situations for plants. Fluorescence spectra of lawn grass are presented in normal and various stress conditions during fluorescence excitation at the wavelength of 532 nm induced by anthropogenic soil pollution. It is shown that influence of stress factors induced by soil pollution on plants transforms the fluorescence spectrum significantly; these results could be used as a basis for a new laser method for remote control of plants’ condition.
Experimental studies of the remote correlation laser method for measuring instantaneous wind speed
Engineering Education # 04, April 2013
DOI: 10.7463/0413.0565048
The authors describe a laser lidar model for remote measurement of instantaneous speed and direction of atmospheric winds. The authors provide the results of experimental studies in the surface layer of the remote correlation laser method for measuring instantaneous wind speed and characteristics of aerosol backscatter coefficient heterogeneities of the atmosphere. It is shown that the measurement of aerosol size heterogeneities and adaptive selection of size measurement framework in accordance with the found criterion can increase determination accuracy of instantaneous wind speed by correlation lidars.
Method of classification of oil slicks on the earth surface, based on detection of fluorescent radiation in five narrow spectral ranges
Engineering Education # 03, March 2013
DOI: 10.7463/0313.0539554
The article deals with classification of oil slicks on the earth surface. The authors provide experimentally obtained fluorescence spectra of pure oil and petroleum products; of various earth surfaces that are not polluted with oil; of oil and petroleum products spilled on various earth surfaces. It is shown that the use of the method based on detection of fluorescent radiation in five narrow spectral ranges allows to detect and classify oil slicks on the earth surface with probability of correct detection and correct classification close to one.
Laser gas analysis for multicomponent gas mixtures with essentially different gas concentration
Engineering Education # 02, February 2013
DOI: 10.7463/0213.0539070
The paper describes the problem of gas reconstruction in laser analysis of multicomponent gas mixtures with essentially different gas concentration. Signal processing procedures based on the projective method are described. Usage of the projective method allowed to solve the problem of gas reconstruction efficiently for multicomponent gas mixtures in cases of distinctions in gas concentrations by one or two orders of magnitude and even more.
Laser method of determining thickness of gold nanofilms on a quartz substrate, based on measurement of the transmittance
Engineering Education # 12, December 2012
DOI: 10.7463/1212.0507361
The article covers a laser method of measuring thickness of thin metal films on a transparent insulating substrate, based on the measurement of transmittance of a four-layer system "air (vacuum) - metal film - insulating base - air (vacuum)." Mathematical modeling results show that when measuring transmittance of a four-layer system "air (vacuum) - metal film - insulating base - air (vacuum)" at the wavelength of 515 nm, thickness determination of gold nanofilms on a quartz substrate is possible to a precision of  not more than 2% in the film thickness range  of 5 – 70 nm.
Laser fluorescence detection method of plant stress conditions caused by insufficient nutrients or contaminants in soil
Engineering Education # 12, December 2012
DOI: 10.7463/1212.0506199
The authors analyzed fluorescence spectra of healthy vegetation and greenery under stress caused by lack of nutrients or presence of contaminants in soil. It is shown that use of fluorescence emission in the green or blue-green regions of spectrum and registration of fluorescent radiation in three narrow spectral ranges with central wavelengths of 680, 740 and 700 nm allows reliable detection of vegetation stress.
Monopulse location sounding method for natural fossils
Engineering Education # 12, December 2012
DOI: 10.7463/1212.0482683
In this paper the authors study capabilities of the monopulse optical location method of measuring reflection coefficient of natural fossils. It was shown that use of quadrature formulae and a regularization method allows to reconstruct spatial distribution of smooth varying reflectivity under the conditions of measurement noise in a wide coverage area of the optical locator
Experimental studies of laser fluorescence method for remote sensing of plants in stressful situations due to mechanical injuries
Engineering Education # 11, November 2012
DOI: 10.7463/1112.0480063
Experimental setup for studying the condition of plants by laser fluorescence method is described in this article. Fluorescence spectra of lawn grass in normal and stressful situations is also presented. It is shown that influence of stress factor on plants could lead to increase in fluorescent signal.
Laser gas analysis of multicomponent gas mixtures in case of rough known matrix of gas absorption coefficients
Engineering Education # 08, August 2012
DOI: 10.7463/0812.0428796
The paper describes the problem of gas reconstruction in laser gas analysis in case of rough known matrix of gas absorption coefficients. Signal processing procedures based on the projective method were described for the differential absorption method. It was shown that use of projective method allows to solve the problem of gas reconstruction for multicomponent gas mixtures in case of rough known matrix of gas absorption coefficients efficiently.
Laser method of detection of oil pollution on rough sea surface using angle scanning
Engineering Education # 07, July 2012
DOI: 10.7463/0712.0413496
In this paper the authors describe a laser method of detecting oil pollution on rough sea surface by means of angle scanning. It was shown that the laser method allows to detect oil pollutions in a broad band on sea surface with high probability of correct detection and low probability of false alarm.
Laser photo-acoustic analysis of multicomponent gas mixtures
Engineering Education # 06, June 2012
DOI: 10.7463/0612.0368798
The authors describe the problem of recovery of gas concentration in laser photo-acoustic analysis. Signal processing procedures based on projective method are described for the differential absorption method. Usage of the projective method was proved to be efficient for solving the problem of recovery of gas concentration for multi-component gas mixtures.
77-48211/361977 Laser gas analysis for complex low-component mixtures
Engineering Bulletin # 05, May 2012
The paper describes the problem of gas reconstruction in laser gas analysis.Signal processing procedures based onmethod of Bayesian estimator were describedfor the differential absorption method. It was shown that usage ofBayesian estimator allowed to solve the problem of gas reconstruction for complex low-component gas mixtures efficiently.
77-30569/361884 Laser fluorescence method of remote control of plants state under stress
Engineering Education # 04, April 2012
 The authors consider a laser fluorescence method of detection of plants state under stress. It is shown that the laser fluorescence method is an advanced method for remote detection of plants stress states, and it requires further research and development.
77-30569/326698 Laser reflectometry method of measurement of thickness of gold nanofilms on quartz substrate
Engineering Education # 03, March 2012
 In this paper the authors consider a laser reflectometric method of measurement of thickness of metallic films on dielectric substratewas. Optimal wavelengths for measuring thickness of gold nanofilms on quartz substrate were determined; error estimation for determining film thickness from laser reflectometry measurements was obtained. Mathematical simulation shows that the method allows to measure a gold nanofilm with thickness from 1 nm to 5 nm using wavelength 1310 or 1550 nm with mean error ~ 0,15 % and with thickness from 5 nm to 50 nm using wavelength 515 nm with mean error ~ 0,25 % and the relative root-mean-square value of measurement noise 1 %.
77-30569/326277 Hierarchical method of classification of oil pollution at earth's surface based on detection of fluorescence radiation within four narrow spectral bands
Engineering Education # 02, February 2012
Laser monitoring problem of oil pollution at earth's surfaces was considered in this paper. It was shown that use of laser method based on detection of fluorescence radiation within four narrow spectral bands and hierarchical method of classification, allowed to classify oil pollution at earth's surfaces with a probability of correct classification close to one.
77-30569/256187 Experimental research of fluorescent spectrums of natural formations and oil pollution
Engineering Education # 11, November 2011
Article is devoted to experimental research of laser induced fluorescent spectrums of oil pollution on the earth’s surface. It was shown, that fluorescent spectrums of natural formations (earth’s underlying surfaces) and oil pollution had their own features which can be used to control oil pollution on the earth’s surface both right after spillage and at least a day after.
77-30569/233673 Laser method of measurement of thickness and refraction index of a nanofilm on a substrate based on determination of first-order derivative of reflection coefficient
Engineering Education # 10, October 2011
This article considers laser method of measurement of thickness and refraction index of a nanofilm on substrate. It is shown that the method based on determination of the first-order derivative of reflection coefficient allows to measure (with very few measurement errors) thickness and refraction index of a film at a measurement error of determination of reflection coefficient and first-order derivative of reflection coefficient by ~ 0,3 % in a wide range of refraction index (~ 3…7 and more) and thickness (~ 10…100 nm and more).  
 
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