Radio Propagation and Remote Sensing of the Environment - Chapter 13 ppsx

... the bandwidth of the scattered signal and not of the transmitted one (matched filtration) for noise bandwidth computing. However, the signal-to-noise ratio worsens by thousands of times, and the ... particles, and the frequency broad- ening of the signals is determined by their thermal velocities. The Doppler broad- ening of a spectrum is estimated by the valu...

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... Press 66 Radio Propagation and Remote Sensing of the Environment logical compared to their energy flows. If the following is the power flow density of the incident wave: then the flow density of its ... Press 76 Radio Propagation and Remote Sensing of the Environment , (3.94) where, as before, F 23 (d) is the Fresnel coefficient of reflection from t...

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... for remote sensing of the environment are mounted on the surface of the Earth, on ships and riverboats, and on air- and spacecraft. Earth-mounted radar is used for the study of the atmosphere and ... measurement of σ 0 permits us to estimate the height of the sea waves and then draw conclusions about the velocity of the near-surface winds. Knowle...

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... A. Armand and V. M. Polyakov Radio Propagation and Remote Sensing of the Environment © 2005 by CRC Press 18 Radio Propagation and Remote Sensing of the Environment The essence of Kirchhoff’s ... 2005 by CRC Press 26 Radio Propagation and Remote Sensing of the Environment Conceptually, we should have to calculate the real part of the...

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... Press 52 Radio Propagation and Remote Sensing of the Environment (2.93) which occurs when the frequency of the received wave is more than the frequency of the radiation. In the opposite case of mutual ... Press 48 Radio Propagation and Remote Sensing of the Environment is proportional to the total signal energy. The corresponding calculatio...

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... Press 88 Radio Propagation and Remote Sensing of the Environment If angle α between the direction of the ray and the direction of the permittivity is introduced, then: (4 .13) Further, it ... Press 106 Radio Propagation and Remote Sensing of the Environment The initial eikonal value is assumed to be zero. Furthermore, let L be the d...

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... Press 134 Radio Propagation and Remote Sensing of the Environment we should take into consideration the relation between the magnetic and electric components of the reflected wave. Then, (5.90) and ... 114 Radio Propagation and Remote Sensing of the Environment volume of a medium having a single section and length ds along the directi...

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... CRC Press 190 Radio Propagation and Remote Sensing of the Environment which represents the section of the antenna pattern by the mean plane of the scat- tering surface. We neglected the difference ... 186 Radio Propagation and Remote Sensing of the Environment The probability integral is now introduced: 45 . (6.117) At τ < 0, before the a...

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... Radio Propagation and Remote Sensing of the Environment In this case, we can neglect the role of small-scale turbulence. Then, it is convenient to use the relation: (7.30) known from the theory ... 220 Radio Propagation and Remote Sensing of the Environment 7.5 THE COHERENCE FUNCTION OF A SPHERICAL WAVE The sources function for the spheric...

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... by CRC Press 224 Radio Propagation and Remote Sensing of the Environment In the case of the receiver responding only to the y-component of waves, we have: (8.9) If the receiver detects ... defined in Chapter 6 © 2005 by CRC Press 222 Radio Propagation and Remote Sensing of the Environment is substituted for its approximate value and (8.3)...

Ngày tải lên: 11/08/2014, 21:21