对系统总体结构进行了设计，介绍了电子海图和通信平台。

The total structure of the new system is designed; the electronic chart technology and communication platform is introduced.

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继而从功能、软硬件环境、组网方式和软件结构上对课题中通信软件所在的SCADA系统作了总体介绍。

The SCADA the researching communication software in is introduced, such as the functions, the environment of software and hardware, the modes of net framework, and the frame of software.

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通信系统总体性能受到失真，噪声和通信信道产生的干扰的显著影响。

Distortion, noise and disturbance have a prominent impact on the total performance of the communication system.

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