TABLE II-8
Slant path fade slope statistics + (8)
Station number _ _ _ _ _ _
Receive station
RX site name
RX country
(1)
_ _
RX latitude (–90..+90) (degrees)
_ _ _ _ _ _ _ _ _ _ _
_
_
_
_
_
_

_
_
_
_
_
_
_
_
_
_
RX longitude (0..360) (degrees) E
RX altitude amsl h gr
(m)
RX antenna height ag h r
(m)
RX 3 dB beamwidth
 r
(degrees)
RX rain zone (2)
_ _ _
_

_
_ _ _ _
_ _ _ _
_ _ _ _
_  _ _
_
RX antenna type
RX antenna diameter D (m)
RX antenna feed type
RX radome? (Y/N)
RX figure of merit (dB(K
–1
))
RX clear-sky level XPD
0
(dB)
RX maximum side-lobe angle

4 (degrees)
RX relative level of maximum side lobe (dB)
RX dynamic range (dB)
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_






_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
Measurement: Experiment No. _ _ _
Satellite name
Satellite orbital position (degrees) E
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
_ _ _  _ _ _
Type of experiment _ _ _
Start date (yyyy.mm.dd)
End date (yyyy.mm.dd)
Duration d (days)
(6)
Frequency f (GHz)
Polarization (L/C)
Polarization tilt angle
 p
(degrees) (7)
Elevation angle (degrees)
RX integration time
(3)
(s)
Data sampling interval (s)
Data resolution (dB)
Type of filter used to remove scintillation (4)
Cut-off frequency of the scintillation filter (Hz)
Fade slope calculation interval of time (s)
_ _ _ _  _ _  _ _
_ _ _ _  _ _  _ _
_ _ _ _  _ _ _
_ _ _  _ _ _
_
_
_
_
_
_
_
_
_
_
_
_
_



_
_
_
_
_
_
_

_
_
_
_
_
_
_

 _
_
_
_
_
_
_
_
Attenuation presented as excess or total (E/T) _
____________________
+ In addition to the tables provided in this document the submitter is requested to provide the data files according to the instructions available on ITU-R SG 3 Web page: Study Group 3 databanks - DBSG3 .
D:\726852189.DOC 11.04.2020

Table a: PDF of fade slope p(

|A) , the probability density of fade slope,

, at a given attenuation
A (_ _  _ _ _ _)
Negative
FS (dB/s)
< -0.5 -0.50/-0.45 -0.45/-0.40 -0.40/-0.35 -0.35/-0.30 -0.30/-0.25 -0.25/-0.20 -0.20/-0.15 -0.15/-0.10 -0.10/-0.05 -0.05/ 0.00
A = A
0.001
dB
A
0.002
dB
A
0.003
dB
A
0.005
dB
A
0.01
dB
A
0.02
dB
A
0.03
dB
A
0.05
dB
A
0.1
dB
A
0.2
dB
A
0.3
dB
A
0.5
dB
A
1
dB
Positive
FS (dB/s)
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
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-
-
-
-
-
-
-
-
-
-
-
-
-
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-
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-
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-
-
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-
-
-
-
-
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-
-
0.00 / 0.05 0.05 / 0.10 0.10 / 0.15 0.15 / 0.20 0.20 / 0.25 0.25 / 0.30 0.30 / 0.35 0.35 / 0.40 0.40 / 0.45 0.45 / 0.50 > 0.50
A = A
0.001
dB
A
0.002
dB
A
0.003
dB
A
0.005
dB
A
0.01
dB
A
0.02
dB
A
0.03
dB
A
0.05
dB
A
0.1
dB
A
0.2
dB
A
0.3
dB
A
0.5
dB
A
1
dB
-
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D:\726852189.DOC 11.04.2020 11.04.2020

- 3 -
3M/94 (Annex 12)-E
Table b: CDF of fade slope
P( |
 
| A) , the probability P that at a given attenuation value, A , the absolute value of the fade slope,
 
is exceeded. (_ _

_ _ _ _)

(dB/s) 0.001 0.002 0.003 0.005 0.01 0.02 0.03 0.05 0.1 0.2 0.3 0.5 1 2 3 5
A = A
0.001
dB
A
0.002
dB
A
0.003
dB
A
0.005
dB
A
0.01
dB
A
0.02
dB
A
0.03
dB
A
0.05
dB
A
0.1
dB
A
0.2
dB
A
0.3
dB
A
0.5
dB
A
1
dB
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
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Table c: Total amount of fade slope samples
Total number of recorded fade slope samples, given the attenuation is equal to A .
Number of fade slope samples
A = A
0.001
dB
A
0.002
dB
A
0.003
dB
A
0.005
dB
A
0.01
dB
A
0.02
dB
A
0.03
dB
A
0.05
dB
A
0.1
dB
A
0.2
dB
A
0.3
dB
A
0.5
dB
A
1
dB
-
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D:\726852189.DOC 11.04.2020 11.04.2020

- 4 -
3M/94 (Annex 12)-E
Table d: PDF of fade slope p(

|A) , the probability density of fade slope,

, at a given attenuation
A (_ _  _ _ _ _)
Negative
FS (dB/s)
< -0.5 -0.50/-0.45 -0.45/-0.40 -0.40/-0.35 -0.35/-0.30 -0.30/-0.25 -0.25/-0.20 -0.20/-0.15 -0.15/-0.10 -0.10/-0.05 -0.05/ 0.00
A = 1 dB
3 dB
5 dB
10 dB
15 dB
20 dB
25 dB
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Positive
FS (dB/s)
0.00 / 0.05 0.05 / 0.10 0.10 / 0.15 0.15 / 0.20 0.20 / 0.25 0.25 / 0.30 0.30 / 0.35 0.35 / 0.40 0.40 / 0.45 0.45 / 0.50
-
-
-
-
-
-
-
> 0.50
A = 1 dB
3 dB
5 dB
10 dB
15 dB
20 dB
25 dB
-
-
-
-
-
-
-
-
-
-
-
-
-
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-
-
-
-
-
-
-
-
-
-
-
-
Table e: CDF of fade slope
P( |
 
| A) , the probability P that at a given attenuation value, A , the absolute value of the fade slope,
 
is exceeded. (_ _

_ _ _ _)

(dB/s) 0.001 0.002 0.003 0.005 0.01 0.02 0.03 0.05 0.1 0.2 0.3 0.5 1 2 3 5
A = 1 dB
3 dB
5 dB
10 dB
15 dB
20 dB
25 dB
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
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-
Table f: Total amount of fade slope samples
Total number of recorded fade slope samples, given the attenuation is equal to A .
Number of fade slope samples
A = 1 dB
3 dB
5 dB
10 dB
15 dB
20 dB
25 dB
-
-
-
-
-
-
-
D:\726852189.DOC 11.04.2020 11.04.2020

- 5 -
3M/94 (Annex 12)-E
References
Comments:
(1)
Use ISO 3166-1 alpha-2 country codes .
(2) This was referring to Rec. ITU-R P.837-1 (In the current version, these zones no longer exist).
(3) The recommended integration time is 1 second.
(4) Filter types: “B”=Butterworth, “C”=Chebychev, “F” =Fourier Transform, “R”=Raised square cosine.
“S”=Sliding average window (it is not recommended to use the latter).
(5) Positive means that the attenuation is increasing, negative means decreasing.
(6) Duration is the total time of valid measurements for this dataset, expressed as a real number (e.g. 339.888 days). The ratio of duration to the period identified by the start and the end dates of this dataset is the availability (e.g. start=2001/1/1, end=2001/12/31, duration= 339.888 days corresponds to 93.12 % availability).
(7) Tilt angle is referred to polarisation tilt angle with respect to the local horizontal plane.
(8) Submissions should comply with the acceptance criteria specified in Rec. ITU-R P.311.
In particular Rain rate, XPD and attenuation measurements should be strictly concurrent.
D:\726852189.DOC 11.04.2020 11.04.2020