China is a big ocean country, the sea area is vast, the sea environment is complex and changeable to decide that the sea operation is the industry of high risk accidents. In order to strengthen the ability to respond to and deal with maritime emergencies and protect the safety of maritime operations and personnel, it is imperative to build a sound maritime emergency communication system and search and rescue command communication platform.

Application requirement

Marine communication systems widely used in China mainly include Marine wireless communication, Marine satellite communication and shore-based mobile communication, which together constitute a communication network that basically achieves full coverage of the ocean. The system is capable of guaranteeing daily communications for offshore, offshore and ocean-going ships -- shore, ship -- ship. It is widely used in Marine transportation, maritime supervision, Marine aquaculture, environmental monitoring, Marine scientific research, oil and gas exploration and exploitation and other offshore near and distant operation communication.

Program characteristics introduction

Ⅰ.  Intelligent network, namely dynamic networking, decentralization, easy scalability, etc.

Fast networking without center: After the device is powered on, it quickly searches for and discovers other nearby devices and automatically builds a network without prior network planning and configuration. When other nodes are added to the existing network, the new device merges with the existing network through direct connection or jump to form a larger network, so that the normal operation of the entire network does not depend on any node.

Reliable network transmission frequencies can be flexibly configured to ensure normal communication and data services in a changeable, complex, and flexible environment. If services on a node are interrupted due to an accident, the network selects another link to continue data transmission to ensure normal service running.

Easy to expand: new wireless autonomous network devices can be directly connected to the original network; If a node is not covered by the network, you can use another node as a relay point to connect the node to the network.

Ⅱ.  high bandwidth, long distance.

The device has the characteristics of high bandwidth and long distance. The point-to-point transmission distance can reach more than 50KM, and the peak speed can reach more than 150Mbps. With this feature, it can support the transmission of a variety of data.

Ⅲ.  Security and encryption.

Wireless transmission has extremely high requirements and sensitivity for network security and data encryption, which can provide the following strategies and means:

• The network node is bound to the unique MAC address of the hardware device;

• Network ID to distinguish the legitimacy of LAN nodes;

• AES128 or AES256 encryption technology can be selected to make the whole network safe and reliable;

• In addition, third party equipment is used to enhance the level of protection before data enters the network.