The present invention relates to an apparatus and method for detecting a surface-transmitting radar, comprising: a transmission unit for emitting a transmission signal to the ground through a transmission antenna using a digital pseudo random code as a transmission source; and a digital pseudorandom divided by the transmission unit. Includes a delay unit for generating a delayed signal with a delayed code, and a receiving unit for generating a detection result signal by cross-correlating the reflected signal reflected from the ground through the receiving antenna and the delayed signal of the delay unit, and removing noise through overlapping do.
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