ARISS meeting ESTEC 2014 HAM Video Emanuele D’Andria - IØELE

ARISS meeting ESTEC 2014 HAM Video ARISS International Delegates Meeting, April 3 - 5, 2014 – ESA ESTEC Summary  Commissioning  Blank Transmissions  Ground Segment  Chaining Groundstations  Ham TV school contacts  Discussion

ARISS meeting ESTEC 2014 HAM Video ARISS International Delegates Meeting, April 3 - 5, 2014 – ESA ESTEC Commissioning  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 meeting ESTEC 2014 HAM Video ARISS International Delegates Meeting, April 3 - 5, 2014 – ESA ESTEC Commissioning Commissioning objectives  check the correct operation of the HAMTV transmitter:  by measuring the RF power level received (C/No, MER)  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 meeting ESTEC 2014 HAM Video ARISS International Delegates Meeting, April 3 - 5, 2014 – ESA ESTEC Commissioning ASI VLBI Radio Telescope Antenna Geodesy Center in Matera

ARISS meeting ESTEC 2014 HAM Video ARISS International Delegates Meeting, April 3 - 5, 2014 – ESA ESTEC 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 meeting ESTEC 2014 HAM Video ARISS International Delegates Meeting, April 3 - 5, 2014 – ESA ESTEC 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 meeting ESTEC 2014 HAM Video ARISS International Delegates Meeting, April 3 - 5, 2014 – ESA ESTEC 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 meeting ESTEC 2014 HAM Video ARISS International Delegates Meeting, April 3 - 5, 2014 – ESA ESTEC Commissioning VLBI RF chain block diagram

ARISS meeting ESTEC 2014 HAM Video ARISS International Delegates Meeting, April 3 - 5, 2014 – ESA ESTEC 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 meeting ESTEC 2014 HAM Video ARISS International Delegates Meeting, April 3 - 5, 2014 – ESA ESTEC 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). Measured RF performances during commissioning G/T of Matera RX was measured the day before using Cassiopeia A as a calibrated noise source

ARISS meeting ESTEC 2014 HAM Video ARISS International Delegates Meeting, April 3 - 5, 2014 – ESA ESTEC Commissioning #1 Live TV reception with the TT-3200 (Matera #1) Frequency: 2369 MHz, symbol rate: 1.3 MS/s, MER: 25 dB

ARISS meeting ESTEC 2014 HAM Video ARISS International Delegates Meeting, April 3 - 5, 2014 – ESA ESTEC Commissioning #1 Signal monitoring with the FSV Spectrum Analyzer Frequency: 2369 MHz (M1), symbol rate: 1.3 MS/s, C/N> 30 dB

ARISS meeting ESTEC 2014 HAM Video ARISS International Delegates Meeting, April 3 - 5, 2014 – ESA ESTEC Commissioning #2 Live TV reception with the TT-3200 (Matera #1) Frequency: 2395 MHz, symbol rate: 2 MS/s, MER: 31 dB

ARISS meeting ESTEC 2014 HAM Video ARISS International Delegates Meeting, April 3 - 5, 2014 – ESA ESTEC Commissioning #2 Signal monitoring with the FSV Spectrum Analyzer Frequency: 2395 MHz (M2), symbol rate: 2 MS/s, C/N> 42 dB

ARISS meeting ESTEC 2014 ARISS Europe - Regional Scheduling Procedures ARISS International Delegates Meeting, April 3 - 5, 2014 – ESA ESTEC Commissioning All 3 receivers worked as expected in Matera (Italy), plus two ground stations at Casale Monferrato (Italy), and Poitiers (France)

ARISS meeting ESTEC 2014 HAM Video ARISS International Delegates Meeting, April 3 - 5, 2014 – ESA ESTEC B.USOC report

ARISS meeting ESTEC 2014 HAM Video ARISS International Delegates Meeting, April 3 - 5, 2014 – ESA ESTEC Blank Transmissions  Objectives and Plan  Confirmation reports  ARISS Report  F6DZP Forum

ARISS meeting ESTEC 2014 HAM Video ARISS International Delegates Meeting, April 3 - 5, 2014 – ESA ESTEC Blank Transmissions Objectives and plan as of March 28, 2014 DateConfigurationFrequencyDuration March MHz1 week March MHz2 weeks March MHz1 week April MHz1 week April MHz 2.0MS/s +/- 2 weeks +/- April 25nihil All Blank Transmissions performed with antenna 43

ARISS meeting ESTEC 2014 HAM Video ARISS International Delegates Meeting, April 3 - 5, 2014 – ESA ESTEC Blank Transmissions Confirmation from ARISS website reception reports (FSTV) HAMTV Facebook page VIVADATV forum

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 ARISS International Delegates Meeting, April 3 - 5, 2014 – ESA ESTEC 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 meeting ESTEC 2014 HAM Video ARISS International Delegates Meeting, April 3 - 5, 2014 – ESA ESTEC Ground Segment HAM TV standard 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 ( 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. Antenna1.2 m Offset Dish FeedLHCP Helix Preamplifier/Down ConverterKuhne KU LNC-25 RF Coax CableLMR-400 Set Top Box / PC CardMegasat HD 800

ARISS meeting ESTEC 2014 HAM Video ARISS International Delegates Meeting, April 3 - 5, 2014 – ESA ESTEC Ground Segment HAM TV standard KU LNC 25 TM (HAMTV baseline configuration) Frequency range : 2350 – 2550 MHz, IF : – MHz Amplification : 40 dB

ARISS meeting ESTEC 2014 HAM Video ARISS International Delegates Meeting, April 3 - 5, 2014 – ESA ESTEC Ground Segment Sun noise measurement software

ARISS meeting ESTEC 2014 HAM Video ARISS International Delegates Meeting, April 3 - 5, 2014 – ESA ESTEC Chaining Groundstations

ARISS meeting ESTEC 2014 HAM Video ARISS International Delegates Meeting, April 3 - 5, 2014 – ESA ESTEC Video contact duration for a 90 days period starting September 1 st, 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 meeting ESTEC 2014 HAM Video ARISS International Delegates Meeting, April 3 - 5, 2014 – ESA ESTEC Chaining Groundstations Hand-over example (case A, C)

ARISS meeting ESTEC 2014 HAM Video ARISS International Delegates Meeting, April 3 - 5, 2014 – ESA ESTEC Chaining Groundstations Hand-over example (case B, D)

ARISS meeting ESTEC 2014 HAM Video ARISS International Delegates Meeting, April 3 - 5, 2014 – ESA ESTEC Chaining Groundstations location of present ground stations in Europe (range 700 Km)

ARISS meeting ESTEC 2014 HAM Video ARISS International Delegates Meeting, April 3 - 5, 2014 – ESA ESTEC Chaining Groundstations

ARISS meeting ESTEC 2014 HAM Video ARISS International Delegates Meeting, April 3 - 5, 2014 – ESA ESTEC TelebridgeGroundstations Telebridge Groundstations 0° elevation mask - ISS range = 2400Km (only voice link)

ARISS meeting ESTEC 2014 HAM Video ARISS International Delegates Meeting, April 3 - 5, 2014 – ESA ESTEC TelebridgeGroundstations Telebridge Groundstations 21° elevation mask - ISS range = 1000Km (HAMTV link)

ARISS meeting ESTEC 2014 HAM Video ARISS International Delegates Meeting, April 3 - 5, 2014 – ESA ESTEC TelebridgeGroundstations + ESA/ESAC Telebridge Groundstations + ESA/ESAC + Warsaw + IZ7RTN (pending application) 21° elevation mask - ISS range = 1000Km (HAMTV link)

ARISS meeting ESTEC 2014 HAM Video ARISS International Delegates Meeting, April 3 - 5, 2014 – ESA ESTEC TelebridgeGroundstations + ESA/ESAC Telebridge Groundstations + ESA/ESAC + Warsaw + IZ7RTN (pending application) 21° elevation mask - ISS range = 1000Km (HAMTV link)

ARISS meeting ESTEC 2014 HAM Video ARISS International Delegates Meeting, April 3 - 5, 2014 – ESA ESTEC Ham TV school contacts Traditional, voice-only, bidirectional, half-duplex school contact VHF band audio School Webcast HAM Radio station aboard

ARISS meeting ESTEC 2014 HAM Video ARISS International Delegates Meeting, April 3 - 5, 2014 – ESA ESTEC Ham TV school contacts VHF band audio School Webcast HAM Radio station aboard 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. S band audio & video 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 approx. 10 minutes audio in VHF band approx. 5 minutes video in S band

ARISS meeting ESTEC 2014 HAM Video ARISS International Delegates Meeting, April 3 - 5, 2014 – ESA ESTEC Ham TV school contacts Internet Network School Webcast HAM TV + Telebridge Ground station School Ground station Phone Teleconference HAM TV Ground station 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)

ARISS meeting ESTEC 2014 HAM Video ARISS International Delegates Meeting, April 3 - 5, 2014 – ESA ESTEC Discussion