The spectral variation mechanism of the transmittedpulse when surface wave meets a defect in steel tube concrete is explained by using the diffraction theory.
运用波的绕射理论阐明了表面波遇到缺陷时透射脉冲频谱发生变化的机理。
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The paper researches the received waveform and the characteristic of BER in one refection and twice refection, studies the influence of multipath distortion on the transmittedpulse.
Telemetry signals, which are not only convention but also a special type-single wide-pulse ones, are transmitted by the pulse Phase Key (PPK) Reent rant Telemetry system.