Abstract: The present disclosure relates to an apparatus and method for removing noise for a weather radar and, more particularly, to an apparatus and method for removing noise for a weather radar, the apparatus and method being able to detecting a radio interference echo, which is noise due to radio interference that is generated by reception of other external radio waves to a weather radar except for a radio wave transmitted from the weather radar, separately from weather eco according to normal weather measurement, and being able to remove the radio interference echo.

Abstract: Provided are an apparatus and a method for removing noise for observation information of a weather radar, and more particularly, an apparatus and a method for removing noise for observation information of a weather radar capable of separating and removing second trip echoes corresponding to noise from precipitation echoes by simulating the reflectivity of the second trip echoes caused by a distance folding phenomenon shown in weather observation information generated using a weather radar. According to the present invention, in order to remove the second trip echo that occurs in the observation information measured in the volume observation radius during weather observation by setting the weather radar as the volume observation radius where the second trip echo occurs, the weather radar is set as a long-range observation radius in which a second trip echo exceeding the volume viewing radius does not occur.

Abstract: Disclosed are an apparatus for selecting a radar installation site for configuring a radar observation network and a method thereof. That is, according to the present invention, an optimal radar observation site is selected through a digital elevation model, GIS information, a beam shield simulation, a propagation environment survey, etc., to collect higher accurate radar data and shorten a time required for a radar installation preliminary survey, etc.

Abstract: Provided are an apparatus and a method for removing noise for observation information of a weather radar, and more particularly, an apparatus and a method for removing noise for observation information of a weather radar capable of separating and removing second trip echoes corresponding to noise from precipitation echoes by simulating the reflectivity of the second trip echoes caused by a distance folding phenomenon shown in weather observation information generated using a weather radar. According to the present invention, in order to remove the second trip echo that occurs in the observation information measured in the volume observation radius during weather observation by setting the weather radar as the volume observation radius where the second trip echo occurs, the weather radar is set as a long-range observation radius in which a second trip echo exceeding the volume viewing radius does not occur.

Abstract: An analysis system for an aviation radiation dose includes: a proton spectrum generator which generates a galactic cosmic ray incident on the Earth's atmosphere and a proton spectrum corresponding to a solar proton event; a global radiation dose map producer which generates-particle transport and produces a radiation dose map; a global radiation dose map converter which converts the radiation dose map based on a standard atmosphere into a radiation dose map corresponding to current atmosphere conditions in real time; and a database in which data necessary for operations of the proton spectrum generator, the global radiation dose map producer and the global radiation dose map converter is previously calculated and stored, thereby having an effect on estimating any radiation route dose if information about an arbitrary path and time is given.

Abstract: Disclosed is a system for estimating a snow depth including: an optical disdrometer for acquiring information on diameters of snow particles and particle number concentration; a laser snow depth gauge for measuring the height of snow accumulated through a laser beam type sensor to provide an observed stop depth; an estimated snow depth equation calculator for determining an optimal index for the diameters of the snow particles provided by the optical disdrometer, substituting the optimal index for a snow depth calculation equation as a first mathematical equation to calculate a computed snow depth, obtaining correlation between the observed snow depth and the computed snow depth, and calculating a regression equation between the observed snow depth and the computed snow depth as an estimated snow depth equation; and a snow depth estimator for estimating the snow depth on the basis of the estimated snow depth equation, and the first mathematical equation.

Abstract: Disclosed is a system for estimating a snow depth including: an optical disdrometer for acquiring information on diameters of snow particles and particle number concentration; a laser snow depth gauge for measuring the height of snow accumulated through a laser beam type sensor to provide an observed stop depth; an estimated snow depth equation calculator for determining an optimal index for the diameters of the snow particles provided by the optical disdrometer, substituting the optimal index for a snow depth calculation equation as a first mathematical equation to calculate a computed snow depth, obtaining correlation between the observed snow depth and the computed snow depth, and calculating a regression equation between the observed snow depth and the computed snow depth as an estimated snow depth equation; and a snow depth estimator for estimating the snow depth on the basis of the estimated snow depth equation, and the first mathematical equation.

Abstract: Disclosed is a remote observation system including: a radar for calculating a rain cloud profile; a GNSS for calculating total rain cloud profiles; a radiometer for calculating a light cloud profile; and a lidar for calculating an aerosol profile. The remote observation method according to the present invention includes: the first step of calculating a rain cloud profile by means of a radar; the second step of calculating total rain cloud profiles by means of a GNSS; the third step of calculating a light cloud profile by means of a radiometer; and the fourth step for calculating an aerosol profile by means of a lidar.

Abstract: Disclosed is an apparatus for calibrating and validating an MRR, the apparatus including a correlation calculation unit configured to determine a correlation between a precipitation strength value and a precipitation measurement value, a regression equation calculation unit configured to calculate a regression equation for the precipitation strength value and to calculate a result value of the regression equation, an optimum accumulation time determination unit configured to determine an optimum accumulation time based on the correlation and the result value, a rain cloud vertical sampling unit configured to sample a rain cloud example, a vertical reflectance comparison unit configured to compare a calibrated MRR at a shortest range distance with a vertical reflectance according to a wind system, and a radar constant correction unit configured to correct a constant of an MRR based on the optimum value or the sampling and a result value of the comparison.

Abstract: Disclosed is a method including a first step for executing, by a numerical simulation execution unit, numerical simulations on an artificial precipitation experiment according to a dispersed seeding material, a second step for calculating, by a spread field information calculation unit, spread field information about the seeding material from the results of the numerical simulations, a third step for calculating, by a point dispersion time range calculation unit, a spread time range of the seeding material for one or more observation points based on the calculated spread field information about the seeding material, and a fourth step for displaying, by a time-series display unit, the spread time range of the seeding material in observation data time series at each of the observation points.

Abstract: An analysis system for an aviation radiation dose according to the present invention includes: a proton spectrum generator which calculates a galactic cosmic ray incident on the Earth's atmosphere and a proton spectrum corresponding to a solar proton event; a global radiation dose map producer which calculates particle transport based on the proton spectrum and produces a radiation dose map; a global radiation dose map converter which converts the radiation dose map produced based on a standard atmosphere into a radiation dose map corresponding to current atmosphere conditions in real time; and a database in which data necessary for operations of the proton spectrum generator, the global radiation dose map producer and the global radiation dose map converter is previously calculated and stored, thereby having an effect on estimating a radiation dose of another route if another piece of information about an arbitrary path and time is given besides a previous given path.

Abstract: Disclosed are a system and method for determining whether to perform airborne glaciogenic seeding experiments through numerical simulations including analyzing weather factors of a target area for airborne glaciogenic seeding experiments, determining whether airborne experiments are possible based on the direction of the wind, the velocity of the wind, temperature and humidity in the target area, determining seeding information by taking into consideration the direction of the wind and the velocity of the wind, performing numerical simulations using the seeding information, displaying and calculating a seeding material spread and distribution field using the results of the numerical simulations, displaying a precipitation increment and a region, and calculating an area, and determining whether a seeding effect is present or not using the displayed and calculated results.

Abstract: An automatic observation apparatus of sky climate conditions is provided in which an opening and closing device is designed such that a lid moves upward and downward by an elevator so as to open and close the upper portion of an observer and thus, although it snows in winter, the lid moves upward and downward while maintaining a state in which snow is accumulated on the lid, the snow does not collapse due to movement of the lid and does not fall onto a transparent cover of the observer, and thereby obstruction of a visual field of a camera by snow is prevented.

Abstract: Provided is a low atmosphere ascent and descent observation experimental tool. Since a position of a radiosonde and a ground captive position of the radiosonde is accurately grasped using a GPS radiosonde, accurate observation results may be obtained.

Abstract: The present invention relates to a method that obtains emissivity or reflectivity based on ratios of the brightness temperature measured by a satellite and the land surface temperature, calculates two reflectivity using polarizing features of a microwave according to surface characteristics, and measures a volumetric soil water content of a land surface considering that water has different physical characteristics from those of soil. In particular, it may be possible to measure volumetric soil water contents on territories of other countries as well as regions which have many limitations and troubles in direct measurement of the volumetric soil water contents. Accordingly, valuable materials in terms of nation economy may be produced together with substantial contribution to industrial fields that have direct effects on agriculture and disaster prevention.

Abstract: Provided is a disdrometer system having a three-dimensional laser array unit, including: a plurality of laser transmitting parts which are arranged on an inner side of a cylindrical body to generate a laser beam; a plurality of laser receiving parts which are arranged on the inner side of the cylindrical body to correspond to the laser transmitting parts; and a laser control part which converts a cut-off signal of the laser beam, which is cut-off by precipitation drops flowing into the inner side of the cylindrical body, into an electrical signal, and records the converted electrical signal. Thus, the disdrometer system has an effect that the shape, volume, number, falling velocity of precipitation drops, and the intensity, density and weight of rainfall can be integrally measured.

Abstract: Systems and methods are provided that involve obtaining emissivity and reflectivity by the ratio of the radiance temperature versus the sea level temperature as observed by a satellite, and may further calculate two reflectivity values observed or simulated by the vertical or horizontal polarized channels of microwave, and then estimate a surface roughness. Further, illustrative implementations may involve obtaining the regression relation expression between the surface roughness and the wind strength and then detecting the sea-surface wind, using the information observed by the satellite again. As such, the sea-surface wind information can be obtained through satellite observation, and the information can be utilized for preventive activities against disaster including typhoon, the energy industry including wind power and the fishery in quasi-real time.

Abstract: A gauge for measuring an amount of precipitation includes first and second storage tanks each having an opened upper end and a lower end formed with a drain hole, a rainwater feeding unit to selectively feed rainwater into one of the first and second storage tanks for a predetermined time, rainwater discharge units connected to both ends of the rainwater feeding unit, respectively, to open the drain hole of one of the storage tanks into which rainwater is no longer fed, measuring devices to measure the weight of rainwater stored in the first storage tank and the second storage tank, respectively, and a data storage device to store data about the weight of rainwater measured by the measuring devices in real time.