According to the characteristic of shaft-rate electric field of ships, the recognition and classification methods of ship targets based on wavelet transform and neural network were proposed.
根据舰船轴频电场信号的特点，提出了基于小波变换和神经网络的目标识别和分类方法。
Companies operating the cargo ships are required to be audited by the recognised classification society ISM auditor, the department has participated in all such audits.
所有货船营运公司都需接受审核，由认可船级社的国际安全管理审核人员负责，海事处参与了这些货船营运公司审核。
Survey and Registration for Classification of Ships and Installations.
调查和注册的船舶和设施分类。
For a new building the statutory certificate, which all convention ships must carry out on board, may be issued by the administration or by the classification society or by both.
一艘新建海船的法定检验证书可以由主管机关或者船级社，或者两者同时进行发放。
The Marine Department has authorised seven classification societies to perform the ISM work relating to cargo ships.
海事处已经授权七家船级社执行与货船相关的国际安全管理工作。
The Marine Department has authorised seven classification societies to perform the ISM work relating to cargo ships.
海事处已经授权七家船级社执行与货船相关的国际安全管理工作。
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