Impedance, Gain, Radiation pattern, Beam width , Radiation resistance, Antenna efficiency, Directivity and Polarization Measurements.
天线测量阻抗, 增益, 辐射模式, 梁宽,抗辐射, 天线效率, 指向性和极化测量.
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In bathymetric survey, the recorded seabed is distorted due to the beam - width of the echo sounder.
摘要在海底地形测量中, 由于波束角效应导致探测的海底地形存在失真.
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