ARISS meeting ESTEC 2014
HAM Video
Emanuele D’Andria - IØELE
ARISS meeting ESTEC 2014
HAM Video
Summary
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Commissioning
Blank Transmissions
Ground Segment
Chaining Groundstations
Ham TV school contacts
Discussion
ARISS International Delegates Meeting, April 3 - 5, 2014 – ESA ESTEC
ARISS meeting ESTEC 2014
HAM Video
Commissioning
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Commissioning objectives
ASI Radio Telescope Geodesy Center in Matera
TLE & First Checkup
diagram installation
operations at Matera
commissioning #1
commissioning #2
B. USOC report
Small ground station role
ARISS International Delegates Meeting, April 3 - 5, 2014 – ESA ESTEC
ARISS meeting ESTEC 2014
HAM Video
Commissioning
Commissioning objectives
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check the correct operation of the HAMTV transmitter:
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by measuring the RF power level received (C/No, MER)
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by measuring the bit-error rate (BER) of the QPSK signal
check the four transmitting frequencies (2 nominal, 2 backup)
check the two modulation bitrates (1.3 and 2.0 MS/s)
verify the performance of ARISS antennas (#41 and #43)
check the ground stations performance
To be sure to receive even a weak signal in the case of reduced output power of the HAMTV
transmitter, due for example to excessive loss in the antenna cables or in the ARISS
antennas, it was decided to focus on a very high-gain receiving antenna: the ASI VLBI
radiotelescope in Matera: a 20 meter reflector with a gain of 50 dB in S-band with near
full tracking capabilities.
ARISS International Delegates Meeting, April 3 - 5, 2014 – ESA ESTEC
ARISS meeting ESTEC 2014
HAM Video
Commissioning
ASI VLBI Radio Telescope Antenna Geodesy Center in Matera
ARISS International Delegates Meeting, April 3 - 5, 2014 – ESA ESTEC
ARISS meeting ESTEC 2014
HAM Video
Commissioning
TLE & First Checkup
Our first check before starting the commissioning was to verify the following
items:
a) how accurate are the TLE data in tracking with such high-precision equipment.
b) the capability of the VLBI antenna, designed to point fixed stars in the sky to
track fast moving objects such a satellites in low earth orbits (LEO).
a) how to interface our receiving system (S-band downconverter, DVB-S
receivers) with the VLBI RF equipment.
ARISS International Delegates Meeting, April 3 - 5, 2014 – ESA ESTEC
ARISS meeting ESTEC 2014
HAM Video
Commissioning
TLE & First Checkup
To check the accuracy of the TLE data, we tracked the ISS with an optical
telescope, which is part of the Matera center for Geodesy. Next, we checked
the ability of the antenna tracking systems to follow fast moving objects such
as satellites in LEO. The results have been very good (less than 0.05 deg of
pointing biases applied to the telescope to center the image in the FOV).
ARISS International Delegates Meeting, April 3 - 5, 2014 – ESA ESTEC
ARISS meeting ESTEC 2014
HAM Video
Commissioning
TLE & First Checkup
To install the S-band downconverter (Kuhne KU 25 LNC), we have taken the signal
between the S-LNA (inside the Dewar) and the D/C2 (see block diagram in the
next slide) with a 10 dB directional coupler. We used the X-band cable exiting
from D/C1 (IF1) to send the IF signal to the receivers in the control room. IF2
remained in place for monitoring purposes. Work was done in the core of the
VLBI antenna, in a chamber just below the feed assembly.
ARISS International Delegates Meeting, April 3 - 5, 2014 – ESA ESTEC
ARISS meeting ESTEC 2014
HAM Video
Commissioning
VLBI RF chain block diagram
ARISS International Delegates Meeting, April 3 - 5, 2014 – ESA ESTEC
ARISS meeting ESTEC 2014
HAM Video
Commissioning
Matera VLBI Control Room
All signals were routed in the control room. In this panoramic image, all the
workstations are clearly seen. From left to right: antenna control, signal
monitoring, remote ground station monitoring, set-top box (interfaced to a
portable computer for streaming), one receiving computer equipped with
Tutioune (the DVB-S software developed by Jean Pierre F6DZP) and the TT-3200
card, another computer equipped with the TT-1600 card.
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
Commissioning #1
Live TV reception with the TT-3200 (Matera #1)
Frequency: 2369 MHz, symbol rate: 1.3 MS/s, MER: 25 dB
ARISS International Delegates Meeting, April 3 - 5, 2014 – ESA ESTEC
ARISS meeting ESTEC 2014
HAM Video
Commissioning #1
Signal monitoring with the FSV Spectrum Analyzer
Frequency: 2369 MHz (M1), symbol rate: 1.3 MS/s, C/N> 30 dB
ARISS International Delegates Meeting, April 3 - 5, 2014 – ESA ESTEC
ARISS meeting ESTEC 2014
HAM Video
Commissioning #2
Live TV reception with the TT-3200 (Matera #1)
Frequency: 2395 MHz, symbol rate: 2 MS/s, MER: 31 dB
ARISS International Delegates Meeting, April 3 - 5, 2014 – ESA ESTEC
ARISS meeting ESTEC 2014
HAM Video
Commissioning #2
Signal monitoring with the FSV Spectrum Analyzer
Frequency: 2395 MHz (M2), symbol rate: 2 MS/s, C/N> 42 dB
ARISS International Delegates Meeting, April 3 - 5, 2014 – ESA ESTEC
ARISS meeting ESTEC 2014
ARISS Europe - Regional Scheduling Procedures
Commissioning
All 3 receivers worked as expected in Matera (Italy), plus two ground stations at
Casale Monferrato (Italy), and Poitiers (France)
ARISS International Delegates Meeting, April 3 - 5, 2014 – ESA ESTEC
ARISS meeting ESTEC 2014
HAM Video
B.USOC report
ARISS International Delegates Meeting, April 3 - 5, 2014 – ESA ESTEC
ARISS meeting ESTEC 2014
HAM Video
Blank Transmissions
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Objectives and Plan
Confirmation reports
ARISS Report
F6DZP Forum
ARISS International Delegates Meeting, April 3 - 5, 2014 – ESA ESTEC
ARISS meeting ESTEC 2014
HAM Video
Blank Transmissions
Objectives and plan as of March 28, 2014
Date
Configuration
Frequency
Duration
March 6
1
2422 MHz
1 week
March 16
3
2395 MHz
2 weeks
March 30
7
2437 MHz
1 week
April 6
5
2369 MHz
1 week
April 13
4
2395 MHz
2.0MS/s
+/- 2 weeks
+/- April 25
nihil
nihil
nihil
All Blank Transmissions performed with antenna 43
ARISS International Delegates Meeting, April 3 - 5, 2014 – ESA ESTEC
ARISS meeting ESTEC 2014
HAM Video
Blank Transmissions
Confirmation from
• ARISS website reception reports (FSTV)
• HAMTV Facebook page
• VIVADATV forum
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
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
Ground Segment
HAM TV standard
The typical Ground Station (GS) is depicted in figure 1; it mainly consists of an offset
dish antenna with 1 meter diameter size, a Left Hand Circular Polarization (LHCP) feed
with downconverter/preamplifier (LNB) and a Set-Top Box Receiver. All equipments
are Components Off The Shelf.
ARISS International Delegates Meeting, April 3 - 5, 2014 – ESA ESTEC
ARISS meeting ESTEC 2014
HAM Video
Ground Segment
HAM TV standard
Antenna
1.2 m Offset Dish
Feed
LHCP Helix
Preamplifier/Down Converter
Kuhne KU LNC-25
RF Coax Cable
LMR-400
Set Top Box / PC Card
Megasat HD 800
Each Ground Station will operate as a receive-only (R/O) terminal i.e. the station can
receive, demodulate and record data transmitted in the S-band (2360 - 2450 MHz).
The antenna used for data reception consists of an offset focus system with azimuth
and elevation mount; it is capable of program controlled operation, however manual
capability as backup solution is foreseen as well.
ARISS International Delegates Meeting, April 3 - 5, 2014 – ESA ESTEC
ARISS meeting ESTEC 2014
HAM Video
Ground Segment
HAM TV standard
KU LNC 25 TM (HAMTV baseline configuration)
Frequency range : 2350 – 2550 MHz, IF : 1433.5 – 1633.5 MHz
Amplification : 40 dB
http://www.kuhne-electronic.de
ARISS International Delegates Meeting, April 3 - 5, 2014 – ESA ESTEC
ARISS meeting ESTEC 2014
HAM Video
Ground Segment
Sun noise measurement software
ARISS International Delegates Meeting, April 3 - 5, 2014 – ESA ESTEC
ARISS meeting ESTEC 2014
HAM Video
Chaining Groundstations
ARISS International Delegates Meeting, April 3 - 5, 2014 – ESA ESTEC
ARISS meeting ESTEC 2014
HAM Video
25
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Video contact duration [minutes]
15
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60
Time starting from 1 SEP 2010 00:00:00 [days]
Video contact duration for a 90 days period starting September 1st, 2010.
Chained stations (and antenna diameters):
Blue: (case A) Lisboa (1 m), Milano (1 m), Bucaresti (1 m), Moskva (1 m)
Green: (case B) Tenerife (1m), Lisboa (1m), Milano (1m), Bucaresti (1m), Moskva (1m)
Red: (case C) Lisboa (2.5m), Milano (1m), Bucaresti (1m), Moskva (2.5m)
Cyan: (case D) Tenerife (2.5m), Lisboa (1m), Milano (1m), Bucaresti (1m), Moskva (2.5m)
ARISS International Delegates Meeting, April 3 - 5, 2014 – ESA ESTEC
ARISS meeting ESTEC 2014
HAM Video
Chaining Groundstations
Hand-over example (case A, C)
ARISS International Delegates Meeting, April 3 - 5, 2014 – ESA ESTEC
ARISS meeting ESTEC 2014
HAM Video
Chaining Groundstations
Hand-over example (case B, D)
ARISS International Delegates Meeting, April 3 - 5, 2014 – ESA ESTEC
ARISS meeting ESTEC 2014
HAM Video
Chaining Groundstations
location of present ground stations in Europe (range 700 Km)
ARISS International Delegates Meeting, April 3 - 5, 2014 – ESA ESTEC
ARISS meeting ESTEC 2014
HAM Video
Chaining Groundstations
ARISS International Delegates Meeting, April 3 - 5, 2014 – ESA ESTEC
ARISS meeting ESTEC 2014
HAM Video
Telebridge Groundstations
0° elevation mask - ISS range = 2400Km (only voice link)
ARISS International Delegates Meeting, April 3 - 5, 2014 – ESA ESTEC
ARISS meeting ESTEC 2014
HAM Video
Telebridge Groundstations
21° elevation mask - ISS range = 1000Km (HAMTV link)
ARISS International Delegates Meeting, April 3 - 5, 2014 – ESA ESTEC
ARISS meeting ESTEC 2014
HAM Video
Telebridge Groundstations + ESA/ESAC
+ Warsaw + IZ7RTN (pending application)
21° elevation mask - ISS range = 1000Km (HAMTV link)
ARISS International Delegates Meeting, April 3 - 5, 2014 – ESA ESTEC
ARISS meeting ESTEC 2014
HAM Video
Telebridge Groundstations + ESA/ESAC
+ Warsaw + IZ7RTN (pending application)
21° elevation mask - ISS range = 1000Km (HAMTV link)
ARISS International Delegates Meeting, April 3 - 5, 2014 – ESA ESTEC
ARISS meeting ESTEC 2014
HAM Video
Ham TV school contacts
Traditional, voice-only, bidirectional,
half-duplex school contact
HAM Radio
station aboard
School
VHF band audio
Webcast
ARISS International Delegates Meeting, April 3 - 5, 2014 – ESA ESTEC
ARISS meeting ESTEC 2014
HAM Video
Ham TV school contacts
approx. 10 minutes audio in VHF band
approx. 5 minutes video in S band
NOTE:
1) VHF audio down-link acts as a backup
for the school and allows ham stations
within the ISS visibility footprint to receive
ISS voice with a simple hardware. Hams will
receive ISS voice during the whole pass.
HAM Radio
station aboard
School
NOTE:
2) Lip synchronization is guaranteed when
the school listen to the “S band voice”
3) Any ham station, equipped with a DVB-S
receiver similar to the one used in the
school and within the ISS visibility circle,
can catch the video down-link
VHF band audio
S band audio & video
Webcast
ARISS International Delegates Meeting, April 3 - 5, 2014 – ESA ESTEC
ARISS meeting ESTEC 2014
HAM Video
Ham TV school contacts
approx. 10 minutes audio in VHF band
approx. 10 minutes video in S band
using chained ground stations linked
per phone teleconference and per
video teleconference (webcast)
HAM TV +
Telebridge
Ground
station
HAM TV
Ground
station
School
Ground
station
Phone
Teleconference
School
Webcast
Internet Network
ARISS International Delegates Meeting, April 3 - 5, 2014 – ESA ESTEC
ARISS meeting ESTEC 2014
HAM Video
Discussion
ARISS International Delegates Meeting, April 3 - 5, 2014 – ESA ESTEC