DIGITAL ATMOSPHERIC OPTICAL COMMUNICATION SYSTEM Russian patent published in 2021 - IPC H04B7/00 H04B10/00 

FIELD: communication.

SUBSTANCE: invention relates to optical communication and information transmission equipment and can be used to organise communication between various mobile and stationary ground, surface, air and underwater objects. To realise the described result, an optical transmitter controller unit connected with the control inputs of the optical transmitter and a unit of reconfigurable optical filters, installed between the input of the optoelectronic receiver and the output of the optical communication channel, are introduced into a digital optical communication system containing a modulator and an optical transmitter, connected in series, an optoelectronic receiver, an analogue-to-digital converter, and a digital demodulator, connected in series, wherein the output of the optical transmitter connected with the optical communication channel, wherein the optoelectronic receiver is made in the form of a sequentially optically coupled receiving optical system and a set of receivers of the ultraviolet and infrared ranges of optical emission, the outputs whereof are the inputs of the analogue-to-digital converter made multi-channel, the optical transmitter is made in the form of a set of ultraviolet and infrared lasers reconfigurable by frequency, the control inputs whereof are connected with the corresponding outputs of the controller of the optical transmitter, the information signal is used to modulate simultaneously the emission of the optical transmitter at several carrier frequencies, simultaneously received by several ultraviolet and infrared receivers, wherein the carrier emission frequencies of the optical transmitter are matched with Fraunhofer absorption lines in the electromagnetic spectrum.

EFFECT: technical result consists in increasing the interference protection of the digital atmospheric optical communication system and ensuring the security of operation thereof.

4 cl, 2 dwg