Maritime Optimal Search Area Research

The coastline of China from the east to the south, stretching 18,000 kilometers, and has a wide reach 4.7 million square kilometers of the total inner side of the sea waters.However, due to the limited number of search facilities equipped,in such a vast sea area the coverage of the facilities less than 0.43% every 100 square milesAfter the shipwreck occurred,the most intuitive standard to guide the search action plan is the ultimate Probabilities of Success.In traditional research,researchers usually just take only one factor into considerations,such as POC,POD,coverage and the drift,ignoring the integrity of the search action.In fact, in the research about the POS,all the factors need to be considered from all the aspects.The article’s research point of view starts from the ultimately POS,taking all factors into account,basing on the maritime search basic theoretical knowledge.It summarizes and analyzes the results of previous studies of the drift model, founding the main factors affecting the drift of the object, while the the drift model is selected to determine initial search area herein.By studying the POC,POD in the classical search theory of Koopman,revising and transforming the classic formula,combing the Search and Rescue Manual and probability theory knowledge, propose a new mathematical method to calculate the POS in different locations in the initial search area.With the help of MATLAB,achieve specific numerical calculation, more intuitive to show the distribution of numbers.The results of this study can provide a reference for future further refine optimal search area at sea, to make decision-making of the search and rescue operations more scientific,and play a role in promoting future search and rescue work in China.