METHOD FOR RADIO DETECTION AND RANGE FINDING Russian patent published in 2005 - IPC

FIELD: radio engineering, applicable in devices of subsurface radar reconnaissance.

SUBSTANCE: the method consists in the fact that signal A(t) is formed, which represents a periodic train of superwide-band pulses, the transmitting antenna is excited by signal A(t), linearly polarized signal A(t) is radiated by the transmitting antenna, reflected signal B(t) is received by the receiving antenna and a decision is taken on detection of a non-linear scatterer at the preset depth as a result of control of the received signal, the transmitting antenna is additionally is excited by signal A(T-τ), formed from signal A(t) by delaying the latter for time τ, signal A(t-τ) is radiated with linear polarization opposite the polarization of signal A(t), received signal B(t) is delayed by time τ, received signal B(t) is summed up with delayed copy B(t-τ), and summary signal B(t)+B(t-τ) is used as a controlled signal.

EFFECT: enhanced efficiency of detection and identification of non-linear scatterers, with the possibility of determination of the depth of its occurrence remaining unchanged.

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