CAJ | 학술논문

AIS数据详细记录了特定水域的船舶位置、船首向和尺寸等数据，可用于计算受限水域内航标安全距离。按一定标准网格化目标航标附近水域，统计周围航行的他船船体出现在每一个网格中的频数，形成他船航迹的网格频数图。按长度尺寸分类，将同类他船航迹网格频数图叠加，形成特定类型船舶的航迹网格频数图。按频数大小填充颜色，可清晰地显示航标附近他船安全通行状态下与航标保持的距离。实验选取上海港航标附近水域海量AIS数据，获取了60～79m，80～99m，100～129m，130～159m船舶航迹形成的网格频数图，结果显示，四类船舶距航标的安全距离随着他船长度的增大而增加，分别为50m，70m，110m，150m。
AIS수거상세기록료특정수역적선박위치、선수향화척촌등수거，가용우계산수한수역내항표안전거리。안일정표준망격화목표항표부근수역，통계주위항행적타선선체출현재매일개망격중적빈수，형성타선항적적망격빈수도。안장도척촌분류，장동류타선항적망격빈수도첩가，형성특정류형선박적항적망격빈수도。안빈수대소전충안색，가청석지현시항표부근타선안전통행상태하여항표보지적거리。실험선취상해항항표부근수역해량AIS수거，획취료60～79m，80～99m，100～129m，130～159m선박항적형성적망격빈수도，결과현시，사류선박거항표적안전거리수착타선장도적증대이증가，분별위50m，70m，110m，150m。
AIS data of a special restricted waters contains the information of location, heading and size of the ships navigating in that area, and it can be used to calculate the safety distance of navigation aids.Through selecting tar-get navigation aid, gridding waters nearby the target navigation aid according to some certain standards, calculating and summarizing the occupy frequency of other ships in each grid, the grid frequency diagram on tracks of other ships can be made.Through overlying all grid frequency diagram of certain type ships, the grid frequency diagram on tracks of specific type ship can be achieved.By filling each grid in the diagrams with color according to the fre-quency number of each grid, the distance between each type of other ships and the target navigation aid can be ob-served clearly.Taking the AIS data in port Shanghai as experimental object, and choosing D27 as target navigation aid, the grid frequency diagrams on the tracks of 60-79m, 80-99m, 100-129m, 130-159m ships were ob-tained .The results showed that the safety distance of four types ships to the target navigation aid increased with the length of ships, and the values were 50m, 70m, 110m, 150m respectively.