What does the science say? - Brigham Young University

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Mul0path Reflec0ons – Roughness Smooth Surface Rough Surface Rayleigh Criteria: transmided wavefront transmided wavefront θ θ C = 4πσθ λ scadered waves scadered waves specular reflec0on C < 0.1, smooth surface ➞ specular reflec0on mean surface standard devia0on of surface mean surface standard devia0on of surface C > 10, highly diffuse reflec0ons ➞ no specular reflec0on 22
Mul0path Reflec0ons – Roughness Rayleigh Criteria: Rela0ve Roughness C = 4πσθ λ C < 0.1, smooth surface ➞ specular reflec0on C > 10, highly diffuse reflec0ons ➞ no specular reflec0on C at 5000 MHz C at 1485.5 MHz C at 5000 MHz C at 2245.5 MHz = 5000 1485.5 =3.4 = 5000 2245.5 =2.2 Surfaces appear more rough at C-‐band ➞ more scadering ➞ weaker specular mul0path 23
Page 1 and 2: C-‐Band Channel Characteris0cs:
Page 3 and 4: Frequency Bands (IEEE) Band Frequen
Page 10 and 11: Line-‐of-‐Site Propaga0on -
Page 13 and 14: Atmospheric Adenua0on from hdp://ww
Page 15: Atmospheric Adenua0on 15
Page 21: Mul0path Reflec0ons - Antenna Gain
Page 26 and 27: Tracking & Beamwidth: a thought exp
Page 28 and 29: What does experience teach us? •
Page 30 and 31: What does experience teach us? •
Page 32 and 33: S-‐ versus C-‐band experime
Page 34 and 35: S-‐ versus C-‐band Ground e
Page 36 and 37: S-‐ versus C-‐band Link exp
Page 38 and 39: S-‐ versus C-‐band Link exp
Page 40 and 41: S-‐ versus C-‐band experime
Page 42 and 43: L-‐ versus C-‐bandTPS exper
Page 48 and 49: TPS Flight #2 L-‐ versus C-
Page 50 and 51: TPS Flight #2 L-‐ versus C-
Page 52 and 53: L-‐ versus C-‐band experime
Page 54: Combined Summary • Main Points -
Page 57 and 58: Mul0path Channel Sounding Experimen
Page 59 and 60: Antenna 4 Antenna 3 Antennas 1,2 59
Page 67 and 68: Project Mercury C-‐Band Radar-
Page 69 and 70: AeroMACS FAA/NASA Aeronau0cal Mobil
Page 71 and 72: Ground-‐Based Radar The ground
Page 73 and 74:
Government parts - MIL-‐STD-
Page 75 and 76:
Radar Systems (2) AN/FPS-‐123 S
Page 77 and 78:
Radar Systems (4) AN/FPS-‐8 S L
Page 79 and 80:
Radar Systems (6) AN/MPS-‐16,-
Page 81 and 82:
AN/FPS-‐6 Type of Radar: Height
Page 83 and 84:
AN/FPS-‐16 AN/FPS-16 RADAR SET!
Page 85 and 86:
AN/FPS-‐26 Height-finder radar
Page 88 and 89:
AN/TPQ-‐39 TPQ-39 - Instrumenta
Page 90 and 91:
RIR-‐778 !"#"$ !%&'()*&+,!-.(&,
Page 92 and 93:
Foliage Attenuation Foliage attenua
Page 94 and 95:
C-‐Band Drone Tracking Control
Page 96 and 97:
Coop. Cvpmt Israel Tucan scout Sear
Page 98 and 99:
Market Place (Conference Proceeding
Page 100:
Conclusions • C-‐band has lon
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What does the science say? - Brigham Young University

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