ARISS meeting ESTEC 2014
HAM Video
Ground Segment
HAM TV standard
The effects of the off-Nadir orientation of on-board
ARISS-41 and ARISS-43 antennas
ARISS International Delegates Meeting, April 3 - 5, 2014 – ESA ESTEC
ARISS meeting ESTEC 2014
HAM Video
#41
#43
ARISS International Delegates Meeting, April 3 - 5, 2014 – ESA ESTEC
ARISS meeting ESTEC 2014
HAM Video
ARISS International Delegates Meeting, April 3 - 5, 2014 – ESA ESTEC
ARISS meeting ESTEC 2014
HAM Video
#43
#41
ARISS International Delegates Meeting, April 3 - 5, 2014 – ESA ESTEC
ARISS meeting ESTEC 2014
HAM Video
Effects of the onboard antenna Off-Nadir Angle
for a pass with Max Elevation = 64°
60
55
50
360
Off-Nadir angle = 9° (#43)
SR = 2.0 MSym/s
G/T = 2.0 dB(1/K)
240
45
120
35
30
0
25
20
-120
15
QEF
threshold
10
-240
5
0
400
600
800
1000
1200
1400
1600
1800
2000
2200
-360
2400
Range [km]
ARISS International Delegates Meeting, April 3 - 5, 2014 – ESA ESTEC
Time [s]
Eb/N0 [dB]
40
ARISS meeting ESTEC 2014
HAM Video
Effects of the onboard antenna Off-Nadir Angle
for a pass with Max Elevation = 64°
60
50
45
Off-Nadir angle = 9°
(#43)
SR = 2.0 MSym/s
G/T = 2.0 dB(1/K)
240
Eb/N0 [dB]
40
120
35
30
0
25
20
-120
15
10
-240
LOT
5
AOT
0
400
600
800
1000
1200
1400
1600
1800
2000
2200
-360
2400
Range [km]
ARISS International Delegates Meeting, April 3 - 5, 2014 – ESA ESTEC
Time [s]
55
360
4’:51’’
ARISS meeting ESTEC 2014
HAM Video
Effects of the onboard antenna Off-Nadir Angle
for a pass with Max Elevation = 64°
60
55
50
360
Off-Nadir angle = 9° (#43)
SR = 1.3 MSym/s
G/T = 2.0 dB(1/K)
240
45
120
35
30
0
25
20
-120
15
10
-240
5
0
400
600
800
1000
1200
1400
1600
1800
2000
2200
-360
2400
Range [km]
ARISS International Delegates Meeting, April 3 - 5, 2014 – ESA ESTEC
Time [s]
Eb/N0 [dB]
40
5’:38’’
ARISS meeting ESTEC 2014
HAM Video
Effects of the onboard antenna Off-Nadir Angle
for a pass with Max Elevation = 64°
60
360
Off-Nadir angle = 9° & 13°
SR = 1.3 MSym/s
G/T = 2.0 dB(1/K)
55
50
240
45
120
35
30
0
25
20
-120
15
10
-240
5
0
400
600
800
1000
1200
1400
1600
1800
2000
2200
-360
2400
Range [km]
ARISS International Delegates Meeting, April 3 - 5, 2014 – ESA ESTEC
Time [s]
Eb/N0 [dB]
40
ARISS meeting ESTEC 2014
HAM Video
Comparison between Nadir and Off-Nadir pointing antennas: Best performances with
Off-Nadir mounting, which exploites maximum gain at larger ranges.
60
55
50
360
Off-Nadir angle = 0° & 13°
SR = 1.3 MSym/s
G/T = 2.0 dB(1/K)
240
45
120
35
5’:31’’
30
0
25
20
Max El.=40°
-120
15
10
-240
5
0
400
600
800
1000
1200
1400
1600
1800
2000
2200
-360
2400
Range [km]
ARISS International Delegates Meeting, April 3 - 5, 2014 – ESA ESTEC
Time [s]
Eb/N0 [dB]
40
5’:05’’
ARISS meeting ESTEC 2014
HAM Video
The effects of the off-Nadir orientation of on-board
ARISS-41 and ARISS-43 antennas
Conclusions
 Off-Nadir mounting increases link duration
 From this point of view the 13° (#41 TBC) is the best
 13° offset antenna allows 4’:31’’ @ 2.0 MSym/s and 40°
pass, using a HAMTV standard station. i.e. 1.2 m, G/T=2.0
dB(1/K)
 13° offset antenna allows 5’:31’’ @ 1.3 MSym/s and 40°
pass, using a HAMTV standard station. i.e. 1.2 m, G/T=2.0
dB(1/K)
 Higher passes allows longer duration, but impose stronger
ARISS International
Delegates
Meeting,
April
3 - 5, 2014A– 64°
ESA ESTEC
constrain
on tracking
(greater
Az.
Speed).
pass allows
ARISS meeting ESTEC 2014
HAM Video
G/T measurement and Rotator setup
Sun Flux: 138 SFU at 2.4 GHz at April 2, 2014, 1200 UTC @ San Vito
8
2369 MHz
2395 MHz
2422 MHz
2437 MHz
7
y (dB)
6
5
4
3
2
0
1
2
3
4
5
G/T dB(1/K)
ARISS International Delegates Meeting, April 3 - 5, 2014 – ESA ESTEC
6
7
8
ARISS meeting ESTEC 2014
HAM Video
:Product: Solar Radio Data
rad.txt
:Issued: 0612 UTC 05 Nov 2012
#
# Prepared by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center
# Please send comments and suggestions to SWPC.Webmaster@noaa.gov
# Units: 10^-22 W/m^2/Hz
# Missing Data: -1
#
#
Daily local noon solar radio flux values - Updated once an hour
#
Freq Learmonth San Vito Sag Hill Penticton Penticton Palehua Penticton
MHZ
0500 UTC 1200 UTC 1700 UTC
1700 UTC
2000 UTC 2300 UTC 2300 UTC
2012 Nov 4
245
410
610
1415
2695
2800
4995
8800
15400
18
36
55
78
87
-1
131
266
542
18
38
-1
81
97
-1
137
270
518
18
37
54
74
88
-1
130
271
576
-1
-1
-1
-1
-1
95
-1
-1
-1
-1
-1
-1
-1
-1
95
-1
-1
-1
19
34
57
78
87
-1
123
259
568
-1
-1
-1
-1
-1
95
-1
-1
-1
ARISS International Delegates Meeting, April 3 - 5, 2014 – ESA ESTEC
ARISS meeting ESTEC 2014
HAM Video
ARISS International Delegates Meeting, April 3 - 5, 2014 – ESA ESTEC
ARISS meeting ESTEC 2014
HAM Video
Level Chart for HAMTV
ARISS International Delegates Meeting, April 3 - 5, 2014 – ESA ESTEC
ARISS meeting ESTEC 2014
HAM Video
One of the first proposed examples of chained stations
(from Document AMSAT Italy GSO R1.1, 13/04/ 2012)
ARISS International Delegates Meeting, April 3 - 5, 2014 – ESA ESTEC
ARISS meeting ESTEC 2014
HAM Video
One of the first proposed examples of chained stations
(from Document AMSAT Italy GSO R1.1, 13/04/ 2012)
ARISS International Delegates Meeting, April 3 - 5, 2014 – ESA ESTEC
ARISS meeting ESTEC 2014
HAM Video
Measured RF performances during commissioning
ARISS International Delegates Meeting, April 3 - 5, 2014 – ESA ESTEC
ARISS meeting ESTEC 2014
HAM Video
Measured RF performances during commissioning
ARISS International Delegates Meeting, April 3 - 5, 2014 – ESA ESTEC
ARISS meeting ESTEC 2014
HAM Video
Measured RF performances during commissioning
ARISS International Delegates Meeting, April 3 - 5, 2014 – ESA ESTEC
ARISS meeting ESTEC 2014
HAM Video
Measured RF performances during commissioning
Our model prediction: commissioning step 2, 12:44:20 UTC, Matera station.
C/N =44.5 dB at 2.0 MSymb/s, Off-Nadir 9°, range 625 km, G/T=25.7 dB(1/K).
60
360
55
50
G/T of Matera RX was
measured the day before
using Cassiopeia A as a
calibrated noise source
240
45
120
35
30
0
25
20
Time [s]
C/N [dB]
40
-120
15
10
-240
5
0
400
600
800
1000
1200
1400
1600
1800
2000
2200
-360
2400
Range [km]
ARISS International Delegates Meeting, April 3 - 5, 2014 – ESA ESTEC
ARISS meeting ESTEC 2014
HAM Video
Thank you
ARISS International Delegates Meeting, April 3 - 5, 2014 – ESA ESTEC