The automatic identification system ( ais ) is a kind of new - type navaid and equipments . the article expatiated the basic principle of the modulation mode named gmsk 船舶自动识别系统( ais )是一种新型的助航系统及设备，目前已发展成通用自动识别系统( uais ) 。
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Article 68 a user ' s charge and a service charge shall be paid for the use of civil airport and its navaid by a civil aircraft ; the rates of user ' s charge and service charge shall be formulated jointly by the competent civil aviation authority under the state council and the finance department and the competent authority of prices under the state council 第六十八条民用航空器使用民用机场及其助航设施的，应当缴纳使用费、服务费；使用费、服务费的收费标准，由国务院民用航空主管部门会同国务院财政部门、物价主管部门制定。
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