In order to avoid the electromagnetic interference between the communication systems,the sidelobe and backlobe of the scatter communication antenna is analyzed and calculated by the geometrical theory of diffraction(GTD),which insures the low sidelobe characteristics of antenna.

The paper birefly describes the application of scatter communication in military communication, and overviews the development trend of scatter communication technology.

In the application of troposcatter communication systems,the setting of the line is pivotal,which depends on how much the operators are familiar with the system,as well as their experience in the task.

Research on Technologies of Diversity and Combining of COFDM-FM Signals in Troposcatter Communications;

The bad transmission environment of troposcatter communication channel is illustrated and its fading characteristic is indicated.

The troposcatter communication enjoys the favors in ocean petroleum communication based on its large single-hop span,large-capacity transmission,convenient set up,economic and practical features,etc.

It is concluded that the spread-spectrum and resolved multipath techniques have a remarkable effect in 8GHz troposcatter communications system.

Then,the paper describes the two kinds of network:the optical fiber based fixed communication network,including broadband B ISDN and all optical AON,as well as the wireless and satellite based new generation mobile comm.

Firstly,it explains the development trends of fixed communication using wireline transmission.