Handbook of Propagation Effects for Vehicular and ... - Courses

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3-20 Relative Signal Level (dB) 5 0 -5 -10 -15 -20 -25 -30 -35 -40 Maximum One-Minute Avg. Minimum Propagation Effects for Vehicular and Personal Mobile Satellite Systems 0 10 20 30 40 50 60 70 80 90 100 110 120 130 Time From Run Start (s) Figure 3-17: Minimum, maximum, and average fades over 1 second interval at 20 GHz for a tree-lined run in Austin, Texas during February 6, 1994. Deciduous trees (Pecan) were devoid of leaves. Relative Signal Level (dB) 5 0 -5 -10 -15 -20 -25 -30 -35 -40 Maximum One-Second Avg. Minimum 0 10 20 30 40 50 60 70 80 90 100 110 120 Time From Run Start (s) Figure 3-18: Minimum, maximum, and average fades over 1 second intervals at 20 GHz for a tree-lined run in Austin, Texas during May 2, 1994. Trees (Pecan) were in full foliage.
Attenuation Due to Roadside Trees: Mobile Case 3-21 Probability Attenuation Exceeds the Abscissa (dB) 100 9 8 7 6 5 4 3 2 10 9 8 7 6 5 1 4 3 2 K-Band Distribution Foliage (5/2/94) No Foliage (2/16/94) 0 5 10 15 20 25 30 35 40 Fade Depth (dB) Figure 3-19: Cumulative distributions at K-Band (20 GHz) for foliage and no-foliage runs in Austin, Texas. Fade With Foliage (dB) 50 45 40 35 30 25 20 15 10 5 Distribution Type Measured Predicted 0 2 4 6 8 10 12 14 16 18 20 22 24 Fade Without Foliage (dB) Figure 3-20: Measured and predicted levels of "foliage" versus "no-foliage" fades at 20 GHz.
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A2A-98-U-0-021 (APL) EERL-98-12A (E
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Table of Contents 1 Introduction __
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10 Optical Methods for Assessing Fa
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Table of Contents 1 Introduction __
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1-2 Propagation Effects for Vehicul
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Page 86 and 87: Table of Tables Table 4-1: Summary
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Fade and Non-Fade Durations and Pha
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Table of Contents 6 Polarization, A
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Chapter 6 Polarization, Antenna Gai
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Polarization, Antenna Gain and Dive
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Table of Contents 7 Investigations
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was derived from measurements over
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7-4 Percentage of Distance Fade > A
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7-6 7.3 Belgium (PROSAT Experiment)
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7-8 Percentage of Distance Fade > A
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7-10 Probability Fade > Abscissa (%
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7-12 Percentage of Distance Fade >
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7-14 Percentage of Time Fade > Absc
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7-24 Probability (%) > Abscissa 100
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7-28 Propagation Effects for Vehicu
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Chapter 8 Earth-Satellite Propagati
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Table of Figures Figure 8-1: Maximu
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Chapter 8 Earth-Satellite Propagati
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Earth-Satellite Propagation Effects
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Chapter 9 Maritime-Mobile Satellite
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Figure 9-7: Fading depth versus pat
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9-6 Roughness Parameter, u (Rad) 28
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9-8 Cθ = ( θo − 7) / 2 dB for
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9-10 Fading Depth (dB) 6 5 4 3 2 1
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9-12 Fading Depth (dB) 6 5 4 3 2 1
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9-18 Mean Fade Occurrence Interval,
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9-20 Mean Fade Duration, T D (sec)
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9-22 Fade Depth (dB) 7.0 6.5 6.0 5.
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Table of Contents 10 Optical Method
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Chapter 10 Optical Methods for Asse
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Optical Methods for Assessing Fade
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Table of Contents 11 Theoretical Mo
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Chapter 11 Theoretical Modeling Con
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Theoretical Modeling Considerations
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Table of Contents 12 Summary of Rec
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Table 12-7: Tabulation of azimuth a
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12-10 12.6.5 Satellite Diversity Pr
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12-12 Propagation Effects for Vehic
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12-14 Standard Deviation (dB) 4 3 2
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12-18 Fade Depth (dB) 7.0 6.5 6.0 5
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Index 13-1 Index 2 2-state Markov m
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Index 13-3 Jongejans, A. et al., 3-
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