[交通運(yùn)輸]gmdss課件_chapter-展示頁
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【正文】 nication to and from Rescue Coordination Centers by the onscene mander (leader), in the distress area. GMDSS OverviewOnscene munications? These relate to munications associated with/和 ...來往 , 和 ...共事 , 同 ...聯(lián)合 SAR activities and normally using RT or NBDP on the designated (to choose for particular purpose) safety frequencies in the MF and VHF bands. ? Simplex is used on RT and Forward Error Correction mode is used with NBDP. GMDSS OverviewLocating signals? These improve the chance of survivals (the fact or likelihood of surviving) , they are used as homing devices/歸航設(shè)施 to locate a distressed vessel and/or survivors (a person who has continued to live in spite of ing close to death) by transmitting signals which can be received as distinctive/明顯不同的 , 特別的 (unique) signals on the searching ship or aircraft’s radar. GMDSS OverviewMSI? GMDSS provides for dissemination/傳播 , 散布o(jì)f important navigational, meteorological information to shipping by automatic means on different frequency bands to ensure maximum coverage. GMDSS OverviewGeneral radiomunication? This is designed to cope with (deal with) what by far/到目前為止 will be the most widely used of the nine functions listed, namely general (routine) mercial radio traffic (munication), either ship to shore, shore to ship or inter ships. ? This may be in the form of telephone, telex, data exchange etc. on all the necessary frequencies to provide a good quality service. GMDSS OverviewBridge to bridge munications ? A VHF RT service available for inter ship munication relating to the assistance of the safe movement of shipping. GMDSS Overview3 GMDSS Areas ? GMDSS determines/確定 。 從事商業(yè)的 pattern (model。 性質(zhì)或種類不同的 sea areas have been designated (to choose for particular purpose). GMDSS Overview3 GMDSS Areas ? Ship’s radio equipment has been considered in terms of (according to) the range of the munications system in use and the areas in which the ship will trade, thus four areas have been specified.? A1? A2? A3? A4 GMDSS OverviewA1 ? An area within the coverage range of at least one VHF coast station in which continuous DSC alerting is available. This is approximately (about) 20—30 miles, . line of sight (view). GMDSS OverviewA2 ? Within the coverage range of a shorebased MF coast station operating in the 23 MHz band in which continuous DSC alerting is available, approximately 100 miles range. Excludes area A1 GMDSS OverviewA3 ? This excludes (not include) areas A1 and A2. It is the area within the coverage of an INMARSAT geostationary (synchronized) satellite in which continuous alerting is available GMDSS OverviewA4 ? The remaining (be left after others have gone) sea area outside areas A1, A2, A3. GMDSS Overview Carriage Requirements of Ship Stations? Cariage Requirements? Part C of the SOLAS Amendments/修正案1988 provides information on the equipment required by GMDSS ships and the alternative/兩者擇一的 (substitute。 ? All ships will carry equipment for receiving MSI broadcasts. 2 Means of Ensuring Availability of Ship Station Equipment ? The SOLAS Convention requires that each country shall ensure that the radio equipment is maintained/維護(hù)，維修 , 保養(yǎng) (to keep it in good condition by making repair to it or taking care of it) to provide the availability of those func
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