The Applications And Research Of Ship-borne Magnetism Receving Antenna Based On The Phase Control Matrix

This topic take ship-borne radio communicating system receiving antenna application as research key, considered in the working conditions of the communications system as well as the ship-borne the antenna design request, propose one kind of ferrites magnetism antenna based on the phase control matrix technical application plan. The ferrites magnetism antenna horizontal directional shape is "8" glyph which does not distort, it has obvious receive zero spot, belongs to the directional antenna. Because the phase control matrix technical applys to the ferrites magnetism antenna, its wave beam direction can be allowed to revolve in 360°. The signal to noise ratio of this kind of antenna has enhanced compared to the same level rank omni directional antenna, it conforms to the system operation requirements, and may realize the miniaturized design.Paper first analysis the ferrites magnetism antenna receptivity, through contrast with the whip antenna commonly used in system, points out the ferrites magnetism antenna superiority, provides the important basis to selecting the receiving antenna for the system. Then the paper centered on the phase control technology related theory to launch, introduced the ferrites magnetism antenna wave beam synthesis control method. After carried on massive test experiment, produces this kind of antenna performance test result. Has analyzed this kind of magnetism antenna application restraint condition in this foundation, designed the application algorithm, when the ship marches forward, according to ship initial position and current position distance as well as station location parameter computes antenna wave beam direction; When the ship waves along with the sea, changes the auto-adapted adjustment antenna wave beam direction according to the signal energy. Such design had guaranteed that when the ship is under the different state of motion, the receiving antenna can receive arrival signal from the different station real-timely, intelligently. Finally, according to the need of the controls algorithm realization builds the hardware electric circuit, and in the hardware platform foundation realizes the magnetism antenna wave directional control algorithm software design: In order to enhance the software reliability and the readability, magnetism antenna wave directional control algorithm software uses the modular design, and separately introduced the software realization of the angle calculating module, the energy decision module, measures chirp module as well as the interface module.