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1. 发明授权

US11410002B2 Ship identity recognition method based on fusion of AIS data and video data 有权
公开(公告)号：US11410002B2
公开(公告)日：2022-08-09
申请号：US17097057
申请日：2020-11-13
申请人： SHANGHAI ADVANCED AVIONICS CO., LTD.
发明人： Min Yuan , Shulin Peng , Wei Qian , Kanjun Ni , Xinya Wang
IPC分类号： G06K9/62 , G06T7/00 , G06V10/44 , G06V10/80 , G06V10/75 , G06V20/54 , G08G3/02 , G08G3/00
摘要： Disclosed is a ship identity recognition method based on the fusion of AIS data and video data, comprising: collecting a ship sample to train a ship target classifier; performing, using the ship target classifier, ship target detection on a video frame collected by a gimbal camera; performing a comparison with a recognized ship library to filter a recognized ship; acquiring AIS data and filtering same across time and spatial scales; predicting the current position of an AIS target using a linear extrapolation method and converting the current position to an image coordinate system; performing position matching between a target to be matched and the converted AIS target; and performing feature extraction on the successfully matched target and storing the extracted feature, together with ship identity information, into the recognized ship library. Experimental results show that the present invention can quickly and accurately extract a surveillance video and perform identity recognition on the ship target, effectively reduces labor costs, and has a broad application prospect in the fields such as ship transportation and port management.

2. 发明授权

US11228384B2 Simulation system and testing method of AIS signals for airborne receiver 有权
公开(公告)号：US11228384B2
公开(公告)日：2022-01-18
申请号：US16894951
申请日：2020-06-08
申请人： SHANGHAI ADVANCED AVIONICS CO., LTD.
发明人： Difei Chen , Qiang Sun , Yingnan Lu
IPC分类号： H04B17/00 , H04B17/391 , G01S19/23 , H04L1/22 , H04L1/24 , H04W72/04
摘要： The present invention discloses a simulation system and testing method of AIS signals for airborne receiver. The simulation system comprises: multiple AIS receivers for receiving AIS signals of vessels, each AIS receiver being respectively connected to a timing unit, and the multiple AIS receivers being connected to a centralized processor by means of a communication network; the centralized processor for combining data of the multiple AIS receivers, deleting redundant data, and forming an AIS database; a flight simulator for manipulating an altitude and direction of an aircraft, and simulating a flight path of a real aircraft; and an AIS signal generator for incorporating the AIS database according to an aircraft position and time point sent from the flight simulator, calculating all AIS signals received by the aircraft at the time point, and sending the AIS signals to an RF signal generator to generate VHF RF signals. The present invention resolves the issue of large differences between existing airborne AIS simulation tests and actual application scenarios, and is applicable to the development of a airborne AIS signal simulation and a testing apparatus.

3. 发明申请

US20200304220A1 SIMULATION SYSTEM AND TESTING METHOD OF AIS SIGNALS FOR AIRBORNE RECEIVER 审中-公开
公开(公告)号：US20200304220A1
公开(公告)日：2020-09-24
申请号：US16894951
申请日：2020-06-08
申请人： SHANGHAI ADVANCED AVIONICS CO., LTD.
发明人： Difei CHEN , Qiang SUN , Yingnan LU
IPC分类号： H04B17/391 , H04B17/00 , H04W72/04 , H04L1/22 , H04L1/24 , G01S19/23
摘要： The present invention discloses a simulation system and testing method of AIS signals for airborne receiver. The simulation system comprises: multiple AIS receivers for receiving AIS signals of vessels, each AIS receiver being respectively connected to a timing unit, and the multiple AIS receivers being connected to a centralized processor by means of a communication network; the centralized processor for combining data of the multiple AIS receivers, deleting redundant data, and forming an AIS database; a flight simulator for manipulating an altitude and direction of an aircraft, and simulating a flight path of a real aircraft; and an AIS signal generator for incorporating the AIS database according to an aircraft position and time point sent from the flight simulator, calculating all AIS signals received by the aircraft at the time point, and sending the AIS signals to an RF signal generator to generate VHF RF signals. The present invention resolves the issue of large differences between existing airborne AIS simulation tests and actual application scenarios, and is applicable to the development of a airborne AIS signal simulation and a testing apparatus.

4. 发明申请

US20210073573A1 SHIP IDENTITY RECOGNITION METHOD BASED ON FUSION OF AIS DATA AND VIDEO DATA 有权
公开(公告)号：US20210073573A1
公开(公告)日：2021-03-11
申请号：US17097057
申请日：2020-11-13
申请人： SHANGHAI ADVANCED AVIONICS CO., LTD.
发明人： Min YUAN , Shulin PENG , Wei QIAN , Kanjun NI , Xinya WANG
IPC分类号： G06K9/62 , G06T7/00
摘要： Disclosed is a ship identity recognition method based on the fusion of AIS data and video data, comprising: collecting a ship sample to train a ship target classifier; performing, using the ship target classifier, ship target detection on a video frame collected by a gimbal camera; performing a comparison with a recognized ship library to filter a recognized ship; acquiring AIS data and filtering same across time and spatial scales; predicting the current position of an AIS target using a linear extrapolation method and converting the current position to an image coordinate system; performing position matching between a target to be matched and the converted AIS target; and performing feature extraction on the successfully matched target and storing the extracted feature, together with ship identity information, into the recognized ship library. Experimental results show that the present invention can quickly and accurately extract a surveillance video and perform identity recognition on the ship target, effectively reduces labor costs, and has a broad application prospect in the fields such as ship transportation and port management.

5. 发明授权

US11108478B2 Geographic information-based simulation test system for medium-high frequency communication channels 有权
公开(公告)号：US11108478B2
公开(公告)日：2021-08-31
申请号：US16771390
申请日：2018-12-07
申请人： SHANGHAI ADVANCED AVIONICS CO., LTD.
发明人： Difei Chen , Qiang Sun , Yao Tang
IPC分类号： H04B17/391 , H04B17/00 , G06F16/29
摘要： The present invention discloses a geographic information-based simulation test system for medium-high frequency communication channels, comprising a human-machine interface module, a geographic information processor, a ground wave signal simulation processing module, a sky wave signal simulation processing module, a digital map, an ambient noise generation module, a time generator, and an simulation signal synthesizer. A ground wave transmission signal and a sky wave transmission signal are respectively simulated according to a ground wave transmission path and a sky wave transmission path; and finally, the ground wave simulation signal, the sky wave simulation signal, and the ambient noise signal are synthesized and sent to a medium-high frequency receiver. By means of the geographic information-based simulation test system for medium-high frequency communication channels, the test cost of the medium-high frequency communication system and device can be reduced, the signals that may be actually received by the medium-high frequency receiver at any location in any period of a year can be simulated quickly, thereby greatly increasing the test speed of the medium-high frequency communication system and device.

6. 发明专利

GB2586766A Ship identity recognition method based on fusion of AIS data and video data 未知
公开(公告)号：GB2586766A
公开(公告)日：2021-03-03
申请号：GB202018957
申请日：2019-03-19
申请人： SHANGHAI ADVANCED AVIONICS CO LTD
发明人： MIN YUAN , SHULIN PENG , WEI QIAN , KANJUN NI , XINYA WANG
IPC分类号： G06K9/00 , G06K9/62
摘要： Disclosed is a ship identity recognition method based on the fusion of AIS data and video data, comprising: collecting a ship sample to train a ship target classifier; performing, using the ship target classifier, ship target detection on a video frame collected by a gimbal camera; performing a comparison with a recognized ship library to filter a recognized ship; acquiring AIS data and filtering same across time and spatial scales; predicting the current position of an AIS target using a linear extrapolation method and converting the current position to an image coordinate system; performing position matching between a target to be matched and the converted AIS target; and performing feature extraction on the successfully matched target and storing the extracted feature, together with ship identity information, into the recognized ship library. Experimental results show that the present invention can quickly and accurately extract a surveillance video and perform identity recognition on the ship target, effectively reduces labor costs, and has a broad application prospect in the fields such as ship transportation and port management.

7. 发明专利

GB2582516A Geographic information-based simulation test system for medium-high frequency communication channels 未知
公开(公告)号：GB2582516A
公开(公告)日：2020-09-23
申请号：GB202008916
申请日：2018-12-07
申请人： SHANGHAI ADVANCED AVIONICS CO LTD
发明人： DIFEI CHEN , QIANG SUN , YAO TANG
IPC分类号： H04B17/391
摘要： Disclosed is a geographic information-based simulation test system for medium-high frequency communication channels, comprising a man-machine interface module, a geographic information processor, a ground wave signal simulation processing module, a sky wave signal simulation processing module, a digital map, an ambient noise generation module, a time generator, and an simulation signal synthesizer. A ground wave transmission signal and a sky wave transmission signal are respectively simulated according to a ground wave transmission path and a sky wave transmission path; and finally, the ground wave simulation signal, the sky wave simulation signal, and the ambient noise signal are synthesized and sent to a medium-high frequency receiver. By means of the geographic information-based simulation test system for medium-high frequency communication channels, the test cost of the medium-high frequency communication system and device can be reduced, the signals that may be actually received by the medium-high frequency receiver at any location in any period of a year can be simulated quickly, thereby greatly increasing the test speed of the medium-high frequency communication system and device.

8. 发明专利

GB2581112A On-board simulation system for receiving marine AIS signals and testing method 未知
公开(公告)号：GB2581112A
公开(公告)日：2020-08-05
申请号：GB202008563
申请日：2018-12-07
申请人： SHANGHAI ADVANCED AVIONICS CO LTD
发明人： DIFEI CHEN , QIANG SUN , YINGNAN LU
IPC分类号： H04B7/185 , H04B17/391
摘要： The present invention discloses an on-board simulation system for receiving marine AIS signals and a testing method. The simulation system comprises: multiple AIS receivers for receiving AIS signals of a vessel, each AIS receiver being respectively connected to a timing unit, and the multiple AIS receivers being connected to a summary processor by means of a communication network; the summary processor for combining data of the multiple AIS receivers, deleting redundant data, and forming an AIS database; a flight simulator for manipulating a flying height and direction of a simulation aircraft, and simulating a flight path of a real aircraft; and an AIS signal generator for incorporating the AIS database according to an aircraft position and a time point sent from the flight simulator, calculating all AIS signals received by the aircraft at the time point, and sending the AIS signals to an RF generator to generate VHF RF signals. The present invention resolves the issue of large differences between existing on-board AIS simulation tests and actual application scenarios, and is applicable to the development of an on-board AIS signal simulation and a testing apparatus.

9. 发明专利

GB202018957D0 Ship identity recognition method based on fusion of AIS data and video data 未知
公开(公告)号：GB202018957D0
公开(公告)日：2021-01-13
申请号：GB202018957
申请日：2019-03-19
申请人： SHANGHAI ADVANCED AVIONICS CO LTD
摘要： Disclosed is a ship identity recognition method based on the fusion of AIS data and video data, comprising: collecting a ship sample to train a ship target classifier; performing, using the ship target classifier, ship target detection on a video frame collected by a gimbal camera; performing a comparison with a recognized ship library to filter a recognized ship; acquiring AIS data and filtering same across time and spatial scales; predicting the current position of an AIS target using a linear extrapolation method and converting the current position to an image coordinate system; performing position matching between a target to be matched and the converted AIS target; and performing feature extraction on the successfully matched target and storing the extracted feature, together with ship identity information, into the recognized ship library. Experimental results show that the present invention can quickly and accurately extract a surveillance video and perform identity recognition on the ship target, effectively reduces labor costs, and has a broad application prospect in the fields such as ship transportation and port management.

10. 发明专利

GB2582516B A geographic information-based simulation test system for medium-high frequency communication channels 未知
公开(公告)号：GB2582516B
公开(公告)日：2021-06-02
申请号：GB202008916
申请日：2018-12-07
申请人： SHANGHAI ADVANCED AVIONICS CO LTD
发明人： DIFEI CHEN , QIANG SUN , YAO TANG
IPC分类号： H04B17/391
摘要： The present invention discloses a geographic information-based simulation test system for medium-high frequency communication channels, comprising a human-machine interface module, a geographic information processor, a ground wave signal simulation processing module, a sky wave signal simulation processing module, a digital map, an ambient noise generation module, a time generator, and an simulation signal synthesizer. A ground wave transmission signal and a sky wave transmission signal are respectively simulated according to a ground wave transmission path and a sky wave transmission path; and finally, the ground wave simulation signal, the sky wave simulation signal, and the ambient noise signal are synthesized and sent to a medium-high frequency receiver. By means of the geographic information-based simulation test system for medium-high frequency communication channels, the test cost of the medium-high frequency communication system and device can be reduced, the signals that may be actually received by the medium-high frequency receiver at any location in any period of a year can be simulated quickly, thereby greatly increasing the test speed of the medium-high frequency communication system and device.

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