The invention discloses a low-frequency mechanical antenna based on
electromechanical coupling and a
signal processing method, and mainly solves the problems of poor stability and low
modulation efficiency of a traditional mechanical antenna
system in the prior art. According to the technical scheme, the method comprises the following steps: the spherical permanent
magnet is fixed by the cylindrical fixing sleeve sleeved with the motor spindle in the same
diameter through the high-speed bearing, so that the operation stability is ensured; a high-speed
servo motor is used for driving a spherical permanent
magnet to rotate and radiating same-frequency electromagnetic
waves outwards; the spherical permanent
magnet is arranged in a magnetic shielding case of a
signal loader,
amplitude modulation information on a low-frequency
magnetic field is loaded by changing the magnetic
conductivity of a shielding case, a modulation
signal is filtered and amplified by the signal collector, and then synchronization and
demodulation are realized in the signal processor. According to the invention, the stability of a mechanical antenna
rotation system is improved, a coding and modulation method adapting to a mechanical antenna modulation signal is provided, the
signal processing efficiency of the antenna is effectively improved,
engineering realization in
information transmission application is facilitated, and the method can be used for a low-frequency
wireless communication
system.