CN102565761B - Achieving method of target handoff in vessel traffic navigation system - Google Patents
Achieving method of target handoff in vessel traffic navigation system Download PDFInfo
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- CN102565761B CN102565761B CN2011104402842A CN201110440284A CN102565761B CN 102565761 B CN102565761 B CN 102565761B CN 2011104402842 A CN2011104402842 A CN 2011104402842A CN 201110440284 A CN201110440284 A CN 201110440284A CN 102565761 B CN102565761 B CN 102565761B
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Abstract
The invention discloses an achieving method of target handoff in a vessel traffic navigation system, which comprises completely converting targets of different information sources into a rectangular coordinate system with a public reference point serving as a null point; regarding maximum accuracy of two information sources in a cross connection area as the grid width, and dividing the cross connection area into a series of grids; filling the grids according to the position of the target in the cross connection area to form two topology matrixes; in the topology matrixes, selecting grids in a rectangular area with the target in the cross connection area serving as a center to form a series of templates and matching every two templates in different topology matrixes to calculate similarity; and performing multi-cycle slide window template test on several pairs of templates with highest similarity, and then obtaining the tested target pairs, namely the same target. By means of the achieving method of the target handoff in the vessel traffic navigation system, handoff failure times can be reduced, and the possibility of handoff failure can be lowered.
Description
Technical field
The invention belongs to the radar target process field, refer in particular to for the target handing-over technology in two radar station cross-connecting areas in vessel traffic navigational system (Vessel Traffic System is called for short VTS).
Background technology
In VTS, when target is navigated by water outside the zone of responsibility of surveillance radar, will cause the loss of target; Now, if this target is positioned at another surveillance radar zone of responsibility, by this radar, continued to follow the tracks of.From monitoring whole consideration, be necessary priority " two batches " target is united two into one like this, become same target.The handing-over of target that Here it is.
In the radar surveillance zone, the situation on river surface or sea is often very complicated, navigator is arranged and do not have navigator ship, AIS(Automatic Identification System is arranged, ship automatic identification system) equipment and there is no the ship of AIS equipment, large, medium and small target simultaneously, and target is often than comparatively dense.These disadvantageous factors, brought very large difficulty all for the handing-over of target.If join unsuccessfully, can on situation, have more a collection of target, impact commander judgement; In case the handing-over mistake, likely bring major accident, as the collision etc.
Therefore, the accurate handing-over of target for overall navigation, the management all tool be of great significance, this case namely is based on such consideration and produces.
Summary of the invention
Technical matters to be solved by this invention, be for the defect in aforementioned background art and deficiency, and the implementation method of target handing-over in a kind of vessel traffic navigational system is provided, and it can reduce the number of times that handing-over is failed, reduces the possibility that handing-over is failed.
The present invention is for solving above technical matters, and the technical scheme adopted is:
In a kind of vessel traffic navigational system, the implementation method of target handing-over, comprise the steps:
(1) in each cross-connecting area, select arbitrarily any as common reference point, the target of different aforementioned sources all is transformed into and take corresponding common reference point under the rectangular coordinate system at zero point;
(2) take the maximal accuracy of the flight path of two information sources in cross-connecting area under rectangular coordinate system is the grid width, and cross-connecting area is divided into to a series of grid;
(3) according to the position of target in cross-connecting area of two information sources, fill respectively grid, form two topological matrixs;
(4), in topological matrix, centered by the target in cross-connecting area, select a grid in rectangular area and form a series of templates;
(5) template in the different topology matrix is mated to the calculating similarity in twos;
(6) the highest several of similarity are carried out to sliding window template check of multicycle to template, certified target is to being namely same target.
In above-mentioned steps (6), at first set the threshold value of two target similarities in same period, during higher than predetermined threshold value, the similarity value is designated as 1, otherwise is designated as 0 when the similarity of the comparative result of two targets in a certain cycle.If continuous N is in the cycle, M is natural number, and it is all 1,0<N≤M that the similarity value in N cycle is arranged, and thinks that this is the different observed readings of two information sources to same target, and these two different flight paths can join; Otherwise, think that these two flight paths can not join.
After adopting such scheme, the present invention combines the technology of the extraction of target topology information and template matches, wherein, the target topology information is to utilize a class of the placement configurations of certain limit internal object to characterize the information of target relative position relation, this category information has the topological invariance to rotation and translation, utilize the topological invariance of target topology information, thereby effectively extract the relative position relation of regional area internal object; Template refers to the information extracted from the target topology information, so that find out corresponding information in another target topology information; By the target topology information is combined with template, have real-time is good, target joins accuracy rate and the high characteristics of stability.
The accompanying drawing explanation
Fig. 1 is invention thought schematic diagram of the present invention;
Fig. 2 is process flow diagram of the present invention.
Embodiment
Below with reference to accompanying drawing, technical scheme of the present invention is elaborated.
As shown in Figure 1, it is the invention thought schematic diagram of the implementation method of target handing-over in a kind of vessel traffic navigational system of the present invention, it is that the technology of the extraction of target topology information and template matches is combined, and the target be applied in the vessel traffic navigational system joins, concrete implementation step such as following, and can coordinate shown in Figure 2:
(1) at first, in each cross-connecting area, select arbitrarily any as common reference point, the target of different aforementioned sources all is transformed into and take corresponding common reference point under the rectangular coordinate system at zero point;
(2) take the maximal accuracy of the flight path of two information sources in cross-connecting area under rectangular coordinate system is the grid width, and cross-connecting area is divided into to a series of grid;
(3) according to the position of target in cross-connecting area of two information sources, fill respectively grid, form two topological matrixs;
(4), in topological matrix, centered by the target in cross-connecting area, select a grid in rectangular area and form a series of templates;
(5) template in the different topology matrix is mated to the calculating similarity in twos;
(6) the highest several of similarity are carried out to sliding window double threshold check of multicycle to template, certified target is to being namely same target.Example is as follows:
At first set the threshold value of two target similarities in same period, during higher than predetermined threshold value, the similarity value is designated as 1, otherwise is designated as 0 when the similarity of the comparative result of two targets in a certain cycle.N(0<N≤M) the similarity value in individual cycle is all 1 if continuous N (M is natural number), in the individual cycle, has, and thinks that this is the different observed readings of two information sources to same target, that is, these two different flight paths can join.Otherwise, think that these two flight paths cannot join.When flight path upgrades next time, if can construct a pair of new template, calculate new similarity, continue this process, be called sliding window.
Above embodiment only, for explanation technological thought of the present invention, can not limit protection scope of the present invention with this, every technological thought proposed according to the present invention, and any change of doing on the technical scheme basis, within all falling into protection domain of the present invention.
Claims (2)
1. the implementation method of target handing-over in a vessel traffic navigational system, is characterized in that comprising the steps:
(1) in each cross-connecting area, select arbitrarily any as common reference point, the target of different aforementioned sources all is transformed into and take corresponding common reference point under the rectangular coordinate system at zero point;
(2) take the maximal accuracy of the flight path of two information sources in cross-connecting area under rectangular coordinate system is the grid width, and cross-connecting area is divided into to a series of grid;
(3) according to the position of target in cross-connecting area of two information sources, fill respectively grid, form two topological matrixs;
(4), in topological matrix, centered by the target in cross-connecting area, select a grid in rectangular area and form a series of templates;
(5) template in the different topology matrix is mated to the calculating similarity in twos;
(6) the highest several of similarity are carried out to sliding window template check of multicycle to template, certified target is to being namely same target.
2. the implementation method that in a kind of vessel traffic navigational system as claimed in claim 1, target joins, it is characterized in that: in described step (6), at first set the threshold value of two target similarities in same period, when the similarity of the comparative result of two targets in a certain cycle during higher than predetermined threshold value, the similarity value is designated as 1, otherwise is designated as 0; If continuous N is in the cycle, M is natural number, and it is all 1,0<N≤M that the similarity value in N cycle is arranged, and thinks that this is the different observed readings of two information sources to same target, and these two different flight paths can join; Otherwise, think that these two flight paths can not join.
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Citations (2)
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| CN101075376A (en) * | 2006-05-19 | 2007-11-21 | 北京微视新纪元科技有限公司 | Intelligent video traffic monitoring system based on multi-viewpoints and its method |
| CN101196561A (en) * | 2007-12-26 | 2008-06-11 | 北京理工大学 | Wireless ranging omnidirectional image combined locating system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101075376A (en) * | 2006-05-19 | 2007-11-21 | 北京微视新纪元科技有限公司 | Intelligent video traffic monitoring system based on multi-viewpoints and its method |
| CN101196561A (en) * | 2007-12-26 | 2008-06-11 | 北京理工大学 | Wireless ranging omnidirectional image combined locating system |
Non-Patent Citations (4)
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| 吴志华 等.沿海水上交通安全网格化管理模式的设计与实现.《中国航海》.2011,第34卷(第1期),54-58. |
| 汤旭红 等.海上交通风险网格化分析和预测研究.《应用基础与工程科学学报》.2008,第16卷(第2期),425-435. |
| 沿海水上交通安全网格化管理模式的设计与实现;吴志华 等;《中国航海》;20110331;第34卷(第1期);54-58 * |
| 海上交通风险网格化分析和预测研究;汤旭红 等;《应用基础与工程科学学报》;20080430;第16卷(第2期);425-435 * |
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Address after: 210003 Jiangsu Province, Nanjing city Zhongshan North Road Xiaguan District No. 346 Patentee after: CSIC NANJING PRIDE TECHNOLOGY GROUP CO.,LTD. Patentee after: JIANGSU MARITIME SAFETY ADMINISTRATION OF THE PEOPLE'S REPUBLIC OF CHINA Address before: 210003 Jiangsu Province, Nanjing city Zhongshan North Road Xiaguan District No. 346 Patentee before: Nanjing Pride Systems Engineering Institute Patentee before: JIANGSU MARITIME SAFETY ADMINISTRATION OF THE PEOPLE'S REPUBLIC OF CHINA |