Abstract:

Considering the current situation of insufficient supervisory capacity of the established Vessel Traffic Service （VTS）， the expansion of VTS radar station location optimization is studied in this research.And a multi-objective locationoptimization problem of VTS radar station is investigated.While the attenuation of radar electromagnetic wave and obstacle occlusion are considered in the location optimization process. By expanding the number of the radar station to the built VTS system， safe navigations of voyaging vessels can be achieved and ensured.In the location optimization process， taking the obstacle occlusion and the attenuation of the radar electromagnetic wave into consideration， the radar attenuation measurement method and the obstacle occlusion judgment method are proposed in the three-dimensional space based on the spatial geometry method.Then， with the objectives of minimizing the total construction cost of VTS radar station and maximizing the coverage of the total water area， the maximum coverage model and the gradual coverage model are used to construct the mathematical model for the expansion of the radar station. And a VTS radar station project in a southern province of China is used as an example to verify the effectiveness of the proposed model and algorithm， and the results of the example are analyzed and sensitivity analysis is conducted.The results show that the proposed model and algorithm can effectively obtain the approximate optimal solution， which provides the solution program for location selection in the expansion process of VTS radar station. Meanwhile， it can provide references about method and model for the studies about radar station blind area， radar station location selection and facility location problems.

Key words: vessel traffic service, radar station location, expansion, obstaclesocclusion, radarattenuation