DEVICE FOR DETECTION AND FREQUENCY ESTIMATION OF RADIO PULSES Russian patent published in 2005 - IPC

FIELD: radio equipment engineering, can be implemented for construction of devices for detection and frequency estimation of radio pulses, including those belonging to radio communication and radio-location systems.

SUBSTANCE: adjustable band filter is inserted in control system, its state is controlled using information about derivative of output voltage of filter, also performed processes concerning: forming of quasi-optimal synchronous processing of device control signals and correction signals using first synchronous detector, forming of cophased oscillation using system for phase frequency automatic-correction, using correction signals after first synchronous detector, synchronous and cophased signals processing is performed using second synchronous detector, for measuring value of unknown frequency of low-noise output oscillation of phase frequency automatic-correction system generator is used. Insertion of derivative-based check connection provides for automatic control over state of filter under effect from powerful interference, to decrease negative effect of aforementioned interference.

EFFECT: increased resistance to interference due to addition of robust properties to device as well as cophased processing of received oscillation and taking of decision concerning frequency estimation using indirect method.

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