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MultiScan™ Radar Glossary
GLOSSARY
Decibel A decibel is a logarithmic
expression of the ratio
between two power levels.
dB = 10log(P1/P2) (e.g., the
ratio 200/10 expressed in dB
is 10log(200/10) = 13dB)
X-Band The operating frequency range
of a receiver transmitter. The
x-band frequency is 9300
MHz.
Z The Radar Reflectivity Factor
Z is a measure of the strength
of the radar echo from a
unit of volume containing
precipitation. Z is related to
the number and size of rain
drops within a given volume,
hence more rain drops or
larger rain drops within a given
volume will result in a higher
radar reflectivity value for Z.
For airborne radars,
Z is commonly related
to rainfall rate by the
following equation:
Z=200*r1.6 where r
is the rainfall rate in millimeters
per hour
1st Edition, 1st Revision
18 Sep 03 Glossary-1
OPERATOR’S GUIDE COLLINS
MultiScan™ Radar
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1st Edition, 1st Revision
Glossary-2 18 Sep 03
COLLINS OPERATOR’S GUIDE
MultiScan™ Radar Index
INDEX
Subject Page
AA
irbus windshear alert activation regions ....................................... 6-40
Airbus, control panel ......................................................................... 4-1
Airbus, display annunciations ........................................................... 4-4
Airbus, gain settings ......................................................................... 6-6
Airbus, predictive windshear .......................................................... 4-52
Airbus, TEST .................................................................................. 4-52
Airbus, windshear coverage ........................................................... 4-46
Alerts, ADVISORY .......................................................................... 4-51
Alerts, CAUTION ............................................................................ 4-51
Alerts, WARNING ........................................................................... 4-50
Alerts, windshear ............................................................................ 4-50
Alien radar ...................................................................................... 6-44
Antenna, calibration ........................................................................ 6-16
Antenna, characteristics ................................................................. 6-12
Antenna, flat-plate .......................................................................... 6-12
Antenna, parabolic ......................................................................... 6-12
Antenna, side lobes ........................................................................ 6-14
Antenna, stabilization ..................................................................... 6-17
Attenuation of radar beam .............................................................. 6-23
Automatic enable ............................................................................ 6-35
Automatic gain .................................................................................. 3-8
Automatic operation ....................................................................... 4-12
Automatic operation, controls ......................................................... 4-13
Azimuth resolution .......................................................................... 6-21
BB
oeing windshear alert activation regions ...................................... 6-42
Boeing, control panel ........................................................................ 4-2
Boeing, display annunciations .......................................................... 4-7
Boeing, gain settings ........................................................................ 6-7
Boeing, TEST ................................................................................. 4-53
Boeing, TEST display ..................................................................... 4-55
Boeing, transfer .............................................................................. 4-20
Boeing, windshear coverage .......................................................... 4-48
Bright band, reflectivity ..................................................................... 5-4
1st Edition, 1st Revision
18 Sep 03 Index-1
OPERATOR’S GUIDE COLLINS
Index MultiScan™ Radar
Subject Page
C
Calibrated gain ........................................................................ 4-35, 6-4
Calibration, antenna ....................................................................... 6-16
　
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