METHOD OF GENERATING CONTROL SIGNAL FOR ACTUATING ELEMENT OF OPTICAL-ELECTRONIC TRACKING SYSTEM Russian patent published in 2009 - IPC G01S3/78 G05D3/12 

FIELD: physics.

SUBSTANCE: invention can be used in optical-electronic tracking systems (OETS) - infrared tracking systems with gyro-stabilised field of vision, which detect, identify and automatically track infrared radiation sources on a celestial background or on the background of the underlying surface of the earth in the presence of false heat-emitting targets (FHET). In the method of generating a control signal for the actuating element, there is further classification of pulsed electrical signals in the optical-electronic main channel (MC) for generating a correction signal (CS) into pulsed electrical signals from the target and pulsed electrical signals from the false heat-emitting target by comparing amplitude of pulsed electrical signals from the same radiation source, generated in the main channel, and in an optical-electronic auxiliary channel (AC), which has an optical transmission window in the other optical range of the infrared spectrum, compared with the optical range of the main channel. Pulsed electrical signals exceeding a given signal to noise ratio are detected in the main channel, and from the detected pulsed electrical signals, which are classified as signals from the target, two strobing pulsed electrical signals are generated, which prevent transmission of signals from the false heat-emitting target to channel for formation of the correction signal on part of the period of rotation of the gyro rotor. From the sinusoidal correction signal, an amplitude standardised strobing pulsed electrical signal φ_k is generated, which allows transmission of signals from the false heat-emitting target to a correction signal formation circuit if signals from the false heat-emittng target and the φ_k signal coincide on time, and prevents transmission of signals from the false heat-emitting target which do not coincide with the φ_k signal on time. Transmission of signals from the false heat-emitting target to a parametric negative feedback circuit is prohibited. Conditions for transmission of pulsed electrical signals from the target or false heat-emitting target for generation of correction signal are recorded in form of a logic equation, given in the formula of invention. Pulsed electrical signals are base limited after amplitude detection to provide for linear relationship between tracking characteristics and angular misalignment of the target image.

EFFECT: wider functional capabilities of infrared tracking systems in conditions where false heat-emitting targets are used.

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