Research On POD In Sea Searches

The continuous development of international trade for the maritime shipping offers great development opportunities, but the growing number of ships also increased the likelihood of accidents at sea. Protecting people and property at sea as the last line of defense, search and rescue at sea has played a huge role. How to improve the likelihood of finding the target and the success of the rescue target has also been the subject of ongoing research of national experts.Search and rescue operation is a complicated systematic project, mainly by the search and rescue of two parts, it is necessary to the security zone target successfully save, search and rescue are essential. The search can be said that the cornerstone of the entire search and rescue operations, it can be said if they find the target, the search is half; can not find it, the latter all the relief is empty talk. In the search process, usually requires two steps:firstly need to determine the search area, search and rescue region, size, location and other factors need to time the sea air flow, the target properties identified. Determine the search area and to ensure that goals can be in this area is called probability of Contains (POC). The second is in the search area to look for a target. In the search area is called the probability of detection (POD).POD is an important factor to consider all of the search plan, both finding the target reflects the ability of search facilities and search effort, but also reflects the search area the size of the properties. This article find the probability by introducing the relevant concepts and theories found in the proposed formula, based on the initial probability of its amendment, the original formula for the stationary target only for the shortcomings, the introduction of the search target motion factors, and impact of amendments Found that the probability of the size of the factors were analyzed. Last reference "Yoshimatsu 5 " round of search and rescue cases that draw a probability curve of the search time, and produced a detection probability calculator.