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公开(公告)号：US20200143543A1
公开(公告)日：2020-05-07
申请号：US16470531
申请日：2018-05-16
Inventor： Sangwoo OH , Tae-Sung KIM , Won-Soo KANG , Moonjin LEE , Tae-Byung CHUN
Abstract: A multiple-wavelength image analysis electro-optical system for detecting a disabled ship and persons overboard of the present invention is a multiple-wavelength image analysis electro-optical system for detecting a disabled ship and persons overboard configured to have an input part 10 provided with an ultra-low light camera 3, a short-wavelength infrared image sensor 5, a medium-wavelength infrared image sensor 7, and a long-wavelength infrared image sensor 9; a signal processing part 20 for receiving and processing data of the input part 10; a display part 30 for receiving and displaying data of the signal processing part 20; a storage part 40 for storing data of the signal processing part 20 and the display part 30; and a control part 90 provided with a camera control board 50 and a drive control board 60 for controlling the input part 10, signal processing part 20, the display part 30 and the storage part 40.
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公开(公告)号：US20250123156A1
公开(公告)日：2025-04-17
申请号：US18807065
申请日：2024-08-16
Inventor： Moonjin LEE , Tae Sung KIM , Yong Myung KIM
IPC: G01K7/42
Abstract: A method for determining water temperature at a random water depth using a seawater temperature vertical distribution stratum simulation model includes generating a four-layer model for seawater temperature vertical distribution, setting a maximum water depth for each layer in the generated four-layer model, generating water temperature data at equal water depth intervals by processing ocean observation data, calculating a vertical gradient of water temperatures for water depths of each layer in the four-layer model by using the generated water temperature data at equal water depth intervals, calculating a water temperature at the maximum water depth of each layer by using the set maximum water depth of each layer and the calculated vertical gradient, and calculating a model water temperature at a random water depth by using the set maximum water depth of each layer, the calculated vertical gradient, and the water temperature at the maximum water depth of each layer.
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公开(公告)号：US20240354976A1
公开(公告)日：2024-10-24
申请号：US18604107
申请日：2024-03-13
Inventor： Moonjin LEE , Tae Sung KIM , Yong Myung KIM
CPC classification number: G06T7/50 , G01S13/90 , G06T5/10 , G06T2207/20056
Abstract: Provided are an apparatus and a method for measuring water depth. In order to solve a problem of water depth measurement apparatuses and methods in the related art, provided are a system and a method for measuring water depth using radar image processing, wherein an underwater environment, such as the shape of a seafloor surface, is more accurately recognized through analysis of a SAR image using synthetic-aperture radar (SAR), and thus, more efficient and accurate water depth measurement is achieved for a wide region with a relatively simple configuration and low cost.
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公开(公告)号：US20240319317A1
公开(公告)日：2024-09-26
申请号：US18680215
申请日：2024-05-31
Inventor： Moonjin LEE , Tae Sung KIM , Yong Myung KIM
CPC classification number: G01S5/18 , B63G8/001 , B63G8/14 , G01S5/0072 , G01S2205/04
Abstract: Proposed is an underwater drift tracking system based on a maritime positioning platform. The underwater drift tracking system may include a plurality of underwater drifting objects configured to transmit sound wave signals including their own water depth information by using sound wave communication while drifting underwater. The underwater drift tracking system may also include a maritime drift tracker configured to track real-time underwater locations of the underwater drifting objects by moving on the sea under its own power, receiving the transmitted sound wave signals from the plurality of underwater drifting objects, and calculating absolute location information of the plurality of underwater drifting objects using the received sound wave signals.
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Patent Agency Ranking
公开(公告)号：US20230314144A1
公开(公告)日：2023-10-05
申请号：US18193435
申请日：2023-03-30
Applicant: Korea Institute of Ocean Science &Technology
Inventor： Moonjin LEE , Yong Myung KIM , Tae Sung KIM
IPC: G01C21/20
CPC classification number: G01C21/203
Abstract: Proposed is a system and method for estimating a drift path of a marine floating body for more accurately estimating a path with a relatively simple configuration and at a relatively low cost. The system and method may achieve a quick and accurate search and contribute to minimizing damage because the system and method can consider both left drift and right drift with respect to a wind direction. The system and method may simulate drift (Leeway) of a marine floating body with respect wind in consideration of both of a Downwind Component of Leeway (DWL) and a Crosswind Component of Leeway (CWL), for example, using Monte Carlo technique, and by creating signs (+/−) by applying a uniform random number to the CWL.
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公开(公告)号：US20250138196A1
公开(公告)日：2025-05-01
申请号：US18798003
申请日：2024-08-08
Inventor： Moonjin LEE , Tae Sung KIM , Yong Myung KIM
Abstract: Provided are a system and method for supporting a return home mode of a drone used on a ship. A drone control device receives GPS reception signal strength information at a first GPS receiver, drone takeoff feasibility information is displayed on a display unit of the drone control device if the GPS reception signal strength is greater than or equal to a set strength, a drone drive motor is controlled by generating a drone drive motor control signal based on ship position information received from the drone control device and drone position information received from a second GPS receiver when a control unit installed in the drone receives return home information from the drone control device after the drone takes off, and the control unit stops the drone drive motor when the difference between the drone position and the ship position is less than or equal to a set distance.
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公开(公告)号：US20250123102A1
公开(公告)日：2025-04-17
申请号：US18809496
申请日：2024-08-20
Inventor： Moonjin LEE , Tae Sung KIM , Yong Myung KIM
IPC: G01C13/00
Abstract: Disclosed is an apparatus and method for estimating tidal fronts. The method for estimating tidal fronts includes obtaining past observation data of a sea area to be estimated, substituting and calculating the obtained past observation data into a preset whole water depth mixing discriminant for a plurality of points in the sea area to be estimated, and as a result of the calculation, regarding an area of points where a calculated value is less than or equal to a preset reference value as a whole water depth mixing sea area, regarding an area of points where the calculated value exceeds the preset reference value as a stratified sea area, and estimating a boundary between the regarded whole water depth mixing sea area and stratified sea area as a tidal front.
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8.发明公开公开(公告)号：US20240363201A1
公开(公告)日：2024-10-31
申请号：US18604072
申请日：2024-03-13
Inventor： Moonjin LEE , Tae Sung KIM , Yong Myung KIM
Abstract: Proposed is a system and method for simulations of marine pollution dispersion using a numerical tracer technique, wherein modeling is faster than conventional diffusion modeling methods by reducing computational volume and load and thereby a simulation of marine pollution dispersion with respect to the long-term continuous discharge may be performed through the numerical tracer technique by configuring to simulate the marine dispersion of suspended sediments (SS) and COD using the Quick Dispersion (Q-DISP) model, which is a diffusion model using the Monte Carlo method, in order to solve the problems of conventional marine pollution dispersion modeling systems and methods using numerical tracer techniques which have the disadvantage of requiring a high-performance computer and a large amount of memory due to the increased computation.
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9.发明申请公开(公告)号：US20190293489A1
公开(公告)日：2019-09-26
申请号：US16465079
申请日：2018-05-18
Inventor： Sangwoo OH , Tae-Sung KIM , Won-Soo KANG , Moonjin LEE , Tae-Byung CHUN
Abstract: A method for detecting a shipwrecked vessel and drown victims by using an aerial hyperspectral image, according to the present invention, comprises the steps of: (a) allowing an image reception unit to receive an observed aerial hyperspectral image, check whether the received aerial hyperspectral image is suitable for detection analysis, and extract observation information, and location information and a reflectance value for each pixel with respect to the detected shipwrecked vessel and drown victims; (b) allowing an image analysis unit to analyze spectral characteristic similarity between a spectral reflection value of a target object and an observed reflection value by using pre-constructed spectral library information and extract constituent materials and an occupation ratio for each pixel of the hyperspectral image, thereby classifying a detection result; and (c) allowing an image visualization unit to display the received hyperspectral image, locations of the detected shipwrecked vessel and drown victims, and detailed information of the detection result.
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