Abstract
The multipath effect in metric wave band is stronger in comparison with microwave radar. In metric wave band, there are long wavelength, large earth surface reflection coefficient (near 1 in low elevation area especially), and comparative amplitudes and strong correlation between direct-wave and multipath reflection signal. Also, for the radar operating in metric wave band, it has broad beams, and the included angle between the direct-wave incident angle and the multipath reflection wave incident angle is very small and they are usually within one beam width, which results in the difficulty to differentiate them generally by the directional selectivity of antenna.
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