Abstract: The present invention relates to a method and an apparatus for continuously detecting a hazardous and noxious substance from multiple satellites, and specifically, provides a method and an apparatus for continuously detecting a hazardous and noxious substance from multiple satellites, the method and apparatus: receiving a multi-satellite image which is photographed by a multi-satellite comprising a satellite having an imaging radar (SAR), a satellite having an infrared sensor, and a satellite having an electronic optical sensor; acquiring a reference image, of the satellite having the SAR, including a ground control point of an observed region; extracting a corresponding point between the reference image and the multi-satellite image; implementing the image matching and geometric correction for the multi-satellite image by using the extracted corresponding point; confirming at least one among the brightness value of pixels of the SAR satellite image, the temperature value of pixels of the infrared satellite i

Abstract: The present invention relates to a method and an apparatus for continuously detecting a hazardous and noxious substance from multiple satellites, and specifically, provides a method and an apparatus for continuously detecting a hazardous and noxious substance from multiple satellites, the method and apparatus: receiving a multi-satellite image which is photographed by a multi-satellite comprising a satellite having an imaging radar (SAR), a satellite having an infrared sensor, and a satellite having an electronic optical sensor; acquiring a reference image, of the satellite having the SAR, including a ground control point of an observed region; extracting a corresponding point between the reference image and the multi-satellite image; implementing the image matching and geometric correction for the multi-satellite image by using the extracted corresponding point; confirming at least one among the brightness value of pixels of the SAR satellite image, the temperature value of pixels of the infrared satellite i

Abstract: A ship-collision prevention system and method for preventing a collision between ships at sea including a ship-collision avoidance guiding system using a time series graphic display, and guiding system displays, in a time series graph, depicting changes in relative distance according to time with respect to respective ships and obstacles on the basis of information provided from an electronic chart display and information system (ECDIS) and a radar system, wherein, whether other ships are on portside or starboard is displayed on the basis of radar information, and a notification through an alarm or the like if a distance to a specific ship has matched a predetermined threshold value or less, and effectively preventing a collision between ships at sea, and simultaneously, enabling a simulation for a crossing event and avoidance by inputting a random value.

Abstract: The present invention relates to a ship-collision prevention system and method for preventing a collision between a ship at sea and another ship, and according to the present invention, provided is a ship-collision avoidance guiding system using a time series graphic display, and in order to solve problems of a conventional electronic chart display and information system (ECDIS) and navigation systems using the same, which have a disadvantage of a complex and unintuitive screen display because of a simple enumeration of various pieces of information on a screen, the guiding system displays, in a time series graph, changes in relative distance according to time with respect to respective ships and obstacles on the basis of information provided from the ECDIS and a radar system, wherein, in a case of ships, whether the respective ships are on portside or starboard is displayed on the basis of radar information, and if a distance to a specific ship has a predetermined threshold value or less, the guiding system

Abstract: The present invention relates to an apparatus and a method for identifying an anomalous satellite in a multi-reference station environment.

Abstract: The present invention relates to a system for detecting ambiguities in a satellite signal for the GPS tracking of vessels, which includes: a GNSS receiving unit obtaining a vessel position using a plurality of satellites; a vessel position calculating unit calculating a second vessel position from a first vessel position after a specific amount of time elapses using dead-reckoning; a distance calculating unit calculating prediction distances between each of the satellites and the vessel and an error monitoring unit comparing the calculated prediction distances between the satellites and the vessel, and pseudoranges between the satellites and the GNSS receiving unit at the second vessel position, and monitoring for the occurrence of errors at the satellites on the basis of the existence of an increase in errors at each of the satellites.

Abstract: There is provided a three-dimensional radar system by using the combination of commercialized usual radars for vessels at relatively low price so as to enable to strengthen the surveillance capability about aircrafts flying at low altitude and strengthen the surveillance capability on the sea and in the air to protect important facilities of a port with more developed than the conventional surveillance system of monitoring only ships or vessels in a port while overcoming the operational limitation of VTS (Vessel Traffic Service).

Abstract: The present invention relates to a system for detecting ambiguities in a satellite signal for the GPS tracking of vessels, which includes: a GNSS receiving unit obtaining a vessel position using a plurality of satellites; a vessel position calculating unit calculating a second vessel position from a first vessel position after a specific amount of time elapses using dead-reckoning; a distance calculating unit calculating prediction distances between each of the satellites and the vessel and an error monitoring unit comparing the calculated prediction distances between the satellites and the vessel, and pseudoranges between the satellites and the GNSS receiving unit at the second vessel position, and monitoring for the occurrence of errors at the satellites on the basis of the existence of an increase in errors at each of the satellites.

Abstract: The present invention relates to a method of determining an anomalous satellite in a multi-reference station environment and a determination apparatus using the method, which detect an anomaly in a satellite and determine the cause of the anomaly in a multi-reference station environment, and continuously provide services in an environment in which the cause of the anomaly is removed, thus improving availability and continuity, and enhancing an integrity monitoring function.

Abstract: There is provided a three-dimensional radar system by using the combination of commercialized usual radars for vessels at relatively low price so as to enable to strengthen the surveillance capability about aircrafts flying at low altitude and strengthen the surveillance capability on the sea and in the air to protect important facilities of a port with more developed than the conventional surveillance system of monitoring only ships or vessels in a port while overcoming the operational limitation of VTS (Vessel Traffic Service).