A study of decomposition of a group of ships for preliminary forecasting of dangerous approaching

The conducted studies of emerging situations of dangerous approaching of several ships revealed the existence of classification of ships that are target ships relative to the base ship. These target ships can be dangerous, safe, safe but dangerous under certain conditions. In turn, dangerous that require the maneuver of standard collision avoidance, as well as the targets that require the maneuver of emergency collision avoidance. It is proved that the specified classification of ships can be carried out using the belonging of target ships to different subsets, which depend on their motion parameters relative to the base ship. This made it possible to view a group of several ships as a set of targets. Experimental studies using computer simulations confirmed that decomposition of the ship approaching situation into subsets, each of which is different from the other in relative motion parameters, is possible. These parameters are relative course, bearing, maximum allowable closest point of approach for normal and emergency maneuvering, time until reaching the closest point of approach. The speed ratio between of the base and target ships, the ratio of the closest point of approach and the maximum allowable distance also affect the belonging to a certain subset. This suggests that there is a clear dependence of the collision probability of ships on their belonging to different subsets, which can be calculated for each ship participating in the collision avoidance maneuver. It is shown that when the base ship performs the collision avoidance maneuver, there are changes in relative motion parameters, and hence the belonging of surrounding target ships to different subsets. Thus, there are grounds to argue that using the specified classification of target ships, preliminary forecasted belonging of ships to different subsets can be calculated. The probability of dangerous approaching and/or collision of ships can also be calculated for each course alternation of the base ship relative to each of the surrounding target ships. Ausführliche Beschreibung

Gespeichert in:

Autor*in:	Yevgen Volkov [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch ; Russisch ; Ukrainisch

Erschienen:	2019

Schlagwörter:	navigation safety ship collision avoidance approaching hazard assessment collision avoidance strategy

Übergeordnetes Werk:	In: Eastern-European Journal of Enterprise Technologies - PC Technology Center, 2019, 3(2019), 3 (99), Seite 6-12
Übergeordnetes Werk:	volume:3 ; year:2019 ; number:3 (99) ; pages:6-12

Links:	Link aufrufen Link aufrufen Link aufrufen Journal toc Journal toc

DOI / URN:	10.15587/1729-4061.2019.165684

Katalog-ID:	DOAJ076530604

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allfields	10.15587/1729-4061.2019.165684 doi (DE-627)DOAJ076530604 (DE-599)DOAJ763b1772fa0e46e7ac802d446f0adc89 DE-627 ger DE-627 rakwb eng rus ukr T1-995 HD2321-4730.9 Yevgen Volkov verfasserin aut A study of decomposition of a group of ships for preliminary forecasting of dangerous approaching 2019 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The conducted studies of emerging situations of dangerous approaching of several ships revealed the existence of classification of ships that are target ships relative to the base ship. These target ships can be dangerous, safe, safe but dangerous under certain conditions. In turn, dangerous that require the maneuver of standard collision avoidance, as well as the targets that require the maneuver of emergency collision avoidance. It is proved that the specified classification of ships can be carried out using the belonging of target ships to different subsets, which depend on their motion parameters relative to the base ship. This made it possible to view a group of several ships as a set of targets. Experimental studies using computer simulations confirmed that decomposition of the ship approaching situation into subsets, each of which is different from the other in relative motion parameters, is possible. These parameters are relative course, bearing, maximum allowable closest point of approach for normal and emergency maneuvering, time until reaching the closest point of approach. The speed ratio between of the base and target ships, the ratio of the closest point of approach and the maximum allowable distance also affect the belonging to a certain subset. This suggests that there is a clear dependence of the collision probability of ships on their belonging to different subsets, which can be calculated for each ship participating in the collision avoidance maneuver. It is shown that when the base ship performs the collision avoidance maneuver, there are changes in relative motion parameters, and hence the belonging of surrounding target ships to different subsets. Thus, there are grounds to argue that using the specified classification of target ships, preliminary forecasted belonging of ships to different subsets can be calculated. The probability of dangerous approaching and/or collision of ships can also be calculated for each course alternation of the base ship relative to each of the surrounding target ships. navigation safety ship collision avoidance approaching hazard assessment collision avoidance strategy Technology (General) Industry In Eastern-European Journal of Enterprise Technologies PC Technology Center, 2019 3(2019), 3 (99), Seite 6-12 (DE-627)737262753 (DE-600)2705552-8 17294061 nnns volume:3 year:2019 number:3 (99) pages:6-12 https://doi.org/10.15587/1729-4061.2019.165684 kostenfrei https://doaj.org/article/763b1772fa0e46e7ac802d446f0adc89 kostenfrei http://journals.uran.ua/eejet/article/view/165684 kostenfrei https://doaj.org/toc/1729-3774 Journal toc kostenfrei https://doaj.org/toc/1729-4061 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 3 2019 3 (99) 6-12
spelling	10.15587/1729-4061.2019.165684 doi (DE-627)DOAJ076530604 (DE-599)DOAJ763b1772fa0e46e7ac802d446f0adc89 DE-627 ger DE-627 rakwb eng rus ukr T1-995 HD2321-4730.9 Yevgen Volkov verfasserin aut A study of decomposition of a group of ships for preliminary forecasting of dangerous approaching 2019 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The conducted studies of emerging situations of dangerous approaching of several ships revealed the existence of classification of ships that are target ships relative to the base ship. These target ships can be dangerous, safe, safe but dangerous under certain conditions. In turn, dangerous that require the maneuver of standard collision avoidance, as well as the targets that require the maneuver of emergency collision avoidance. It is proved that the specified classification of ships can be carried out using the belonging of target ships to different subsets, which depend on their motion parameters relative to the base ship. This made it possible to view a group of several ships as a set of targets. Experimental studies using computer simulations confirmed that decomposition of the ship approaching situation into subsets, each of which is different from the other in relative motion parameters, is possible. These parameters are relative course, bearing, maximum allowable closest point of approach for normal and emergency maneuvering, time until reaching the closest point of approach. The speed ratio between of the base and target ships, the ratio of the closest point of approach and the maximum allowable distance also affect the belonging to a certain subset. This suggests that there is a clear dependence of the collision probability of ships on their belonging to different subsets, which can be calculated for each ship participating in the collision avoidance maneuver. It is shown that when the base ship performs the collision avoidance maneuver, there are changes in relative motion parameters, and hence the belonging of surrounding target ships to different subsets. Thus, there are grounds to argue that using the specified classification of target ships, preliminary forecasted belonging of ships to different subsets can be calculated. The probability of dangerous approaching and/or collision of ships can also be calculated for each course alternation of the base ship relative to each of the surrounding target ships. navigation safety ship collision avoidance approaching hazard assessment collision avoidance strategy Technology (General) Industry In Eastern-European Journal of Enterprise Technologies PC Technology Center, 2019 3(2019), 3 (99), Seite 6-12 (DE-627)737262753 (DE-600)2705552-8 17294061 nnns volume:3 year:2019 number:3 (99) pages:6-12 https://doi.org/10.15587/1729-4061.2019.165684 kostenfrei https://doaj.org/article/763b1772fa0e46e7ac802d446f0adc89 kostenfrei http://journals.uran.ua/eejet/article/view/165684 kostenfrei https://doaj.org/toc/1729-3774 Journal toc kostenfrei https://doaj.org/toc/1729-4061 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 3 2019 3 (99) 6-12
allfields_unstemmed	10.15587/1729-4061.2019.165684 doi (DE-627)DOAJ076530604 (DE-599)DOAJ763b1772fa0e46e7ac802d446f0adc89 DE-627 ger DE-627 rakwb eng rus ukr T1-995 HD2321-4730.9 Yevgen Volkov verfasserin aut A study of decomposition of a group of ships for preliminary forecasting of dangerous approaching 2019 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The conducted studies of emerging situations of dangerous approaching of several ships revealed the existence of classification of ships that are target ships relative to the base ship. These target ships can be dangerous, safe, safe but dangerous under certain conditions. In turn, dangerous that require the maneuver of standard collision avoidance, as well as the targets that require the maneuver of emergency collision avoidance. It is proved that the specified classification of ships can be carried out using the belonging of target ships to different subsets, which depend on their motion parameters relative to the base ship. This made it possible to view a group of several ships as a set of targets. Experimental studies using computer simulations confirmed that decomposition of the ship approaching situation into subsets, each of which is different from the other in relative motion parameters, is possible. These parameters are relative course, bearing, maximum allowable closest point of approach for normal and emergency maneuvering, time until reaching the closest point of approach. The speed ratio between of the base and target ships, the ratio of the closest point of approach and the maximum allowable distance also affect the belonging to a certain subset. This suggests that there is a clear dependence of the collision probability of ships on their belonging to different subsets, which can be calculated for each ship participating in the collision avoidance maneuver. It is shown that when the base ship performs the collision avoidance maneuver, there are changes in relative motion parameters, and hence the belonging of surrounding target ships to different subsets. Thus, there are grounds to argue that using the specified classification of target ships, preliminary forecasted belonging of ships to different subsets can be calculated. The probability of dangerous approaching and/or collision of ships can also be calculated for each course alternation of the base ship relative to each of the surrounding target ships. navigation safety ship collision avoidance approaching hazard assessment collision avoidance strategy Technology (General) Industry In Eastern-European Journal of Enterprise Technologies PC Technology Center, 2019 3(2019), 3 (99), Seite 6-12 (DE-627)737262753 (DE-600)2705552-8 17294061 nnns volume:3 year:2019 number:3 (99) pages:6-12 https://doi.org/10.15587/1729-4061.2019.165684 kostenfrei https://doaj.org/article/763b1772fa0e46e7ac802d446f0adc89 kostenfrei http://journals.uran.ua/eejet/article/view/165684 kostenfrei https://doaj.org/toc/1729-3774 Journal toc kostenfrei https://doaj.org/toc/1729-4061 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 3 2019 3 (99) 6-12
allfieldsGer	10.15587/1729-4061.2019.165684 doi (DE-627)DOAJ076530604 (DE-599)DOAJ763b1772fa0e46e7ac802d446f0adc89 DE-627 ger DE-627 rakwb eng rus ukr T1-995 HD2321-4730.9 Yevgen Volkov verfasserin aut A study of decomposition of a group of ships for preliminary forecasting of dangerous approaching 2019 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The conducted studies of emerging situations of dangerous approaching of several ships revealed the existence of classification of ships that are target ships relative to the base ship. These target ships can be dangerous, safe, safe but dangerous under certain conditions. In turn, dangerous that require the maneuver of standard collision avoidance, as well as the targets that require the maneuver of emergency collision avoidance. It is proved that the specified classification of ships can be carried out using the belonging of target ships to different subsets, which depend on their motion parameters relative to the base ship. This made it possible to view a group of several ships as a set of targets. Experimental studies using computer simulations confirmed that decomposition of the ship approaching situation into subsets, each of which is different from the other in relative motion parameters, is possible. These parameters are relative course, bearing, maximum allowable closest point of approach for normal and emergency maneuvering, time until reaching the closest point of approach. The speed ratio between of the base and target ships, the ratio of the closest point of approach and the maximum allowable distance also affect the belonging to a certain subset. This suggests that there is a clear dependence of the collision probability of ships on their belonging to different subsets, which can be calculated for each ship participating in the collision avoidance maneuver. It is shown that when the base ship performs the collision avoidance maneuver, there are changes in relative motion parameters, and hence the belonging of surrounding target ships to different subsets. Thus, there are grounds to argue that using the specified classification of target ships, preliminary forecasted belonging of ships to different subsets can be calculated. The probability of dangerous approaching and/or collision of ships can also be calculated for each course alternation of the base ship relative to each of the surrounding target ships. navigation safety ship collision avoidance approaching hazard assessment collision avoidance strategy Technology (General) Industry In Eastern-European Journal of Enterprise Technologies PC Technology Center, 2019 3(2019), 3 (99), Seite 6-12 (DE-627)737262753 (DE-600)2705552-8 17294061 nnns volume:3 year:2019 number:3 (99) pages:6-12 https://doi.org/10.15587/1729-4061.2019.165684 kostenfrei https://doaj.org/article/763b1772fa0e46e7ac802d446f0adc89 kostenfrei http://journals.uran.ua/eejet/article/view/165684 kostenfrei https://doaj.org/toc/1729-3774 Journal toc kostenfrei https://doaj.org/toc/1729-4061 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 3 2019 3 (99) 6-12
allfieldsSound	10.15587/1729-4061.2019.165684 doi (DE-627)DOAJ076530604 (DE-599)DOAJ763b1772fa0e46e7ac802d446f0adc89 DE-627 ger DE-627 rakwb eng rus ukr T1-995 HD2321-4730.9 Yevgen Volkov verfasserin aut A study of decomposition of a group of ships for preliminary forecasting of dangerous approaching 2019 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The conducted studies of emerging situations of dangerous approaching of several ships revealed the existence of classification of ships that are target ships relative to the base ship. These target ships can be dangerous, safe, safe but dangerous under certain conditions. In turn, dangerous that require the maneuver of standard collision avoidance, as well as the targets that require the maneuver of emergency collision avoidance. It is proved that the specified classification of ships can be carried out using the belonging of target ships to different subsets, which depend on their motion parameters relative to the base ship. This made it possible to view a group of several ships as a set of targets. Experimental studies using computer simulations confirmed that decomposition of the ship approaching situation into subsets, each of which is different from the other in relative motion parameters, is possible. These parameters are relative course, bearing, maximum allowable closest point of approach for normal and emergency maneuvering, time until reaching the closest point of approach. The speed ratio between of the base and target ships, the ratio of the closest point of approach and the maximum allowable distance also affect the belonging to a certain subset. This suggests that there is a clear dependence of the collision probability of ships on their belonging to different subsets, which can be calculated for each ship participating in the collision avoidance maneuver. It is shown that when the base ship performs the collision avoidance maneuver, there are changes in relative motion parameters, and hence the belonging of surrounding target ships to different subsets. Thus, there are grounds to argue that using the specified classification of target ships, preliminary forecasted belonging of ships to different subsets can be calculated. The probability of dangerous approaching and/or collision of ships can also be calculated for each course alternation of the base ship relative to each of the surrounding target ships. navigation safety ship collision avoidance approaching hazard assessment collision avoidance strategy Technology (General) Industry In Eastern-European Journal of Enterprise Technologies PC Technology Center, 2019 3(2019), 3 (99), Seite 6-12 (DE-627)737262753 (DE-600)2705552-8 17294061 nnns volume:3 year:2019 number:3 (99) pages:6-12 https://doi.org/10.15587/1729-4061.2019.165684 kostenfrei https://doaj.org/article/763b1772fa0e46e7ac802d446f0adc89 kostenfrei http://journals.uran.ua/eejet/article/view/165684 kostenfrei https://doaj.org/toc/1729-3774 Journal toc kostenfrei https://doaj.org/toc/1729-4061 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 3 2019 3 (99) 6-12
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author	Yevgen Volkov
spellingShingle	Yevgen Volkov misc T1-995 misc HD2321-4730.9 misc navigation safety misc ship collision avoidance misc approaching hazard assessment misc collision avoidance strategy misc Technology (General) misc Industry A study of decomposition of a group of ships for preliminary forecasting of dangerous approaching
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title_sort	study of decomposition of a group of ships for preliminary forecasting of dangerous approaching
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title_auth	A study of decomposition of a group of ships for preliminary forecasting of dangerous approaching
abstract	The conducted studies of emerging situations of dangerous approaching of several ships revealed the existence of classification of ships that are target ships relative to the base ship. These target ships can be dangerous, safe, safe but dangerous under certain conditions. In turn, dangerous that require the maneuver of standard collision avoidance, as well as the targets that require the maneuver of emergency collision avoidance. It is proved that the specified classification of ships can be carried out using the belonging of target ships to different subsets, which depend on their motion parameters relative to the base ship. This made it possible to view a group of several ships as a set of targets. Experimental studies using computer simulations confirmed that decomposition of the ship approaching situation into subsets, each of which is different from the other in relative motion parameters, is possible. These parameters are relative course, bearing, maximum allowable closest point of approach for normal and emergency maneuvering, time until reaching the closest point of approach. The speed ratio between of the base and target ships, the ratio of the closest point of approach and the maximum allowable distance also affect the belonging to a certain subset. This suggests that there is a clear dependence of the collision probability of ships on their belonging to different subsets, which can be calculated for each ship participating in the collision avoidance maneuver. It is shown that when the base ship performs the collision avoidance maneuver, there are changes in relative motion parameters, and hence the belonging of surrounding target ships to different subsets. Thus, there are grounds to argue that using the specified classification of target ships, preliminary forecasted belonging of ships to different subsets can be calculated. The probability of dangerous approaching and/or collision of ships can also be calculated for each course alternation of the base ship relative to each of the surrounding target ships.
abstractGer	The conducted studies of emerging situations of dangerous approaching of several ships revealed the existence of classification of ships that are target ships relative to the base ship. These target ships can be dangerous, safe, safe but dangerous under certain conditions. In turn, dangerous that require the maneuver of standard collision avoidance, as well as the targets that require the maneuver of emergency collision avoidance. It is proved that the specified classification of ships can be carried out using the belonging of target ships to different subsets, which depend on their motion parameters relative to the base ship. This made it possible to view a group of several ships as a set of targets. Experimental studies using computer simulations confirmed that decomposition of the ship approaching situation into subsets, each of which is different from the other in relative motion parameters, is possible. These parameters are relative course, bearing, maximum allowable closest point of approach for normal and emergency maneuvering, time until reaching the closest point of approach. The speed ratio between of the base and target ships, the ratio of the closest point of approach and the maximum allowable distance also affect the belonging to a certain subset. This suggests that there is a clear dependence of the collision probability of ships on their belonging to different subsets, which can be calculated for each ship participating in the collision avoidance maneuver. It is shown that when the base ship performs the collision avoidance maneuver, there are changes in relative motion parameters, and hence the belonging of surrounding target ships to different subsets. Thus, there are grounds to argue that using the specified classification of target ships, preliminary forecasted belonging of ships to different subsets can be calculated. The probability of dangerous approaching and/or collision of ships can also be calculated for each course alternation of the base ship relative to each of the surrounding target ships.
abstract_unstemmed	The conducted studies of emerging situations of dangerous approaching of several ships revealed the existence of classification of ships that are target ships relative to the base ship. These target ships can be dangerous, safe, safe but dangerous under certain conditions. In turn, dangerous that require the maneuver of standard collision avoidance, as well as the targets that require the maneuver of emergency collision avoidance. It is proved that the specified classification of ships can be carried out using the belonging of target ships to different subsets, which depend on their motion parameters relative to the base ship. This made it possible to view a group of several ships as a set of targets. Experimental studies using computer simulations confirmed that decomposition of the ship approaching situation into subsets, each of which is different from the other in relative motion parameters, is possible. These parameters are relative course, bearing, maximum allowable closest point of approach for normal and emergency maneuvering, time until reaching the closest point of approach. The speed ratio between of the base and target ships, the ratio of the closest point of approach and the maximum allowable distance also affect the belonging to a certain subset. This suggests that there is a clear dependence of the collision probability of ships on their belonging to different subsets, which can be calculated for each ship participating in the collision avoidance maneuver. It is shown that when the base ship performs the collision avoidance maneuver, there are changes in relative motion parameters, and hence the belonging of surrounding target ships to different subsets. Thus, there are grounds to argue that using the specified classification of target ships, preliminary forecasted belonging of ships to different subsets can be calculated. The probability of dangerous approaching and/or collision of ships can also be calculated for each course alternation of the base ship relative to each of the surrounding target ships.
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title_short	A study of decomposition of a group of ships for preliminary forecasting of dangerous approaching
url	https://doi.org/10.15587/1729-4061.2019.165684 https://doaj.org/article/763b1772fa0e46e7ac802d446f0adc89 http://journals.uran.ua/eejet/article/view/165684 https://doaj.org/toc/1729-3774 https://doaj.org/toc/1729-4061
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A study of decomposition of a group of ships for preliminary forecasting of dangerous approaching

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