free space wave的意思|示意

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Free Space Wave（also known as simply Space Wave）refers to a type of propagation for long distance communication. It is a type of line-of-sight propagation which means that the signal from the transmitting antenna is able to travel a long distance without any surface interference.

In general, this type of communication is used when the distance between two points is greater than 30 kilometers. This type of communication is ideal in scenarios when there is a need to transmit information between two distant points, such as between two buildings or two cities.

The most common application of Space Wave is in the radio communication industry. It is used in radio links installed between two buildings, or between two cities. In such cases, the antenna at the receiving end, captures the signal from the transmitting antenna, and then amplifies the signal before sending it to the receiver.

Another application of Space Wave is in satellite communication. This type of communication is used to transfer data from one satellite to another. For example, when a satellite needs to transfer data from one point to another, it is done using this type of communication.

Free Space Wave is also used in optical communication. This type of communication is used in fiber-optic cables. When a signal is transmitted through a fiber-optic cable, the signal travels along a certain distance before it reaches its destination. Free Space Wave is used in this process to ensure that the data is transmitted with minimal distortion.

In summary, Free Space Wave is a type of line-of-sight propagation which is used in long-distance communication. It is commonly used in radio communication, satellite communication, and optical communication. It is a reliable and efficient method of transmitting data over large distances.