METHOD OF DETECTING BROADBAND PARAMETRIC SCATTERERS Russian patent published in 2014 - IPC G01S13/74 

FIELD: radio engineering, communication.

SUBSTANCE: invention relates to methods of detecting broadband parametric scatterers which are secondary sources of electromagnetic radiation. A probing signal irradiates a broadband parametric scatterer, wherein, due to the parametric generation phenomenon, a series of packets is formed and re-emitted, said packets consisting of two series of radio pulses of a response signal, the instantaneous frequency of which is twice less than the instantaneous frequency of the pumping signal. The series of radio pulses of the response signal is coherent, is synchronised with one of one of doubled auxiliary radio pulses and behaves as a coherent series with a known law of variation of the phase of high-frequency filling from pulse to pulse. The series of doubled auxiliary radio pulses is encoded based on a different law. Furthermore, corresponding radio pulses of the first and second series of doubled auxiliary radio pulses are anti-phase, while radio pulses of the first and second series of radio pulses of the response signal are in-phase.

EFFECT: high sensitivity of the receiving device of a system for detecting broadband parametric scatterers and longer range of the search system.

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