Study of a Microwave Radar Signal Backscattered at Small Incidence Angles: In-Situ Measurements |
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Authors: | V Yu Karaev E M Meshkov G N Balandina E M Zuikova V Yu Gol'dblat V I Titov |
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Institution: | (1) Institute of Applied Physics, Russian Academy of Sciences, Nizhny Novgorod, Russia |
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Abstract: | We present the results of data processing of the field experiment devoted to a study of a microwave signal backscattered by
a rough water surface and compare them with the theoretical estimates. The measurements were conducted sequentially using
a radar with parabolic and knife-beam antennas. The radar was mounted on the Molitovsky bridge at a height of 40 m across
the Oka river in Nizhny Novgorod, Russia. For the radar with knife-shaped antenna pattern, we examined the reflected-signal
power and the shift and width of the Doppler spectrum as functions of the azimuthal angle for the nadir sounding. For the
parabolic antenna, we studied the reflected-signal power as a function of the incidence angle. Comparison with the experimental
data shows that the developed theoretical model of a Doppler spectrum is in good agreement with the observations.
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Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Radiofizika, Vol. 48, No. 8, pp. 661–673, August 2005. |
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