法国有个延伸到波尔多港的纪龙德河河口,它由游动性的河床和沙洲组成,面积达825平方公里。目前由于进出波尔多港的船舶较大,河口航道的变迁是否会影响船舶航行的安全,必须经常观测查核,若用传统的观测方法显然是有困难的。 1970年以来,波尔多自治港开始对其观测要求和可能的解决办法进行了研究。七年 France has a mouth extending to the port of Gironde, Bordeaux, which is made up of migratory beds and sandbars, covering an area of ​​825 square kilometers. Due to the large ships entering and leaving the port of Bordeaux and whether the changes in the estuary waterway will affect the safety of the navigation of the ship, frequent inspections and inspections must be conducted. Obviously, it is difficult to use traditional observation methods. Since 1970 Bordeaux Autonomous Port has started its study of its observational requirements and possible solutions. Seven years