Lidar, as an important tool for studying atmospheric aerosol, is widely used in studying the distribution of atmospheric aerosol pollution. In environmental monitoring, especially when using mobile lidar for measurements, it's important to know not only situations of the pollution, but also the coordinates of their sources, and their dynamics distribution. The article introduces a method for calculating the coordinates of the objects locations according to the coordinates of the lidar, the detection direction and the distance between the lidar to the objects. Finally, the programming implementation of the method and its application in the development of auxiliary lidar systems.
Lidar, as an important tool for studying atmospheric aerosol, is widely used in studying the distribution of atmospheric aerosol pollution. In environmental monitoring, especially when using mobile lidar for measurements, it's important to know not only situations of the pollution, but also the coordinates of their sources, and their dynamics distribution . The article introduces a method for calculating the coordinates of the objects locations according to the coordinates of the lidar, the detection direction and the distance between the lidar to the objects. Finally, the programming implementation of the method and its application in the development of auxiliary lidar systems.
The report discusses the results of experiments on the registration of backscattering of IR radiation from various aerosol formations. The studies were conducted on the bench for prototyping lidar measurements at a controlled route. Water and solutions in water of tryptophan, salt, alcohol, glycerin, and reduced nicotinamide adenine dinucleotide (NADH) served as model media. For the experiments, the stand was upgraded with an IR radiation source – a tunable waveguide CO2 laser, and an IR receiver – cooled with liquid nitrogen MCT. As a result of the experiments, the ability to discriminate a number of aerosols among themselves by changes in the absorption spectrum during laser wavelength tuning along the lines of a CO2 laser, which can be used in remote laser sensing, was determined.
In the report the results of experiments on the registration of IR radiation backscattering from organic aerosol are presented and discussed. The studies were conducted on the bench for prototyping lidar measurements at a controlled optical way. Water aerosol and water aerosol containing organic components like tryptophan, alcohol, glycerin, and reduced nicotinamide adenine dinucleotide (NADH) served as model media. For these experiments we have modified the experimental set up under replacing UV laser on IR one -- a tunable waveguide CO2- laser. The IR photodetector MCT cooled by liquid nitrogen was used. As a result of the study, the ability to discriminate a number of aerosols among themselves by difference of the absorption spectra under CO2- laser wavelength tuning was demonstrated. It can be used in remote sensing of the different types of organic aerosols.
This paper offers a hardware programming method to automatically collect,process,transmit and store the meteorological data and data of geopositioning on the basis of the ATmega microcontroller and soft hardware Arduino when logging LIDAR measurements and further application of the data obtained in the processing LIDAR measurements.
Measurements of the diffuse reflection coefficients of organic and inorganic materials and media in solid, granular and liquid forms were made in the UV field of 230-400 nm. A single channel spectrometer with an integrating sphere was used. Relation between diffuse reflection coefficients and the structure and composition of the samples is discussed. These data allow us to estimate the prospect of machine vision systems application for the UV range in such areas as biology, geology, remote control of materials and media.
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