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COMPASS 2 ist der zweite von Studenten gebaute Satellit der FH Aachen.

Wie beim ersten Satelliten Projekt COMPASS 1, wurde der Compass 2 nach den CubeSat-Standards gebaut.

Er wurde als ein Triple-CubeSat entwickelt, was ein gesamt Gewicht von 3 kg und Abmessungen von 100x100x340,5 mm bedeutet. Die Studenten der FH Aachen entwickelten das Bus-System mit den notwendigen Teilsystemen zur Stromerzeugung und -verteilung, Datenverwaltung, Kommunikation und Datenübertragung zur Erde sowie den Schnittstellen für die Nutzlasten.

Der Satellit wird mit einer indischen PSLV Rakete in einen Orbit mit einer Höhe von 500 km mit einer Inklination von 97,4622°.

An Bord des Satelliten befinden sich zwei Experimente: ein so genanntes DragSail und Dünnschicht-Solarzellen.

Der Start des Satellit ist aktuell für ende Juni 2017 geplant.
Zurzeit trainiert das Mission Operation Team den Betrieb des Satelliten im Orbit.

compass.two
am 29. Januar 2018 um 18:53 Uhr
From Thursday till Sunday Professor Nohmi from the Kagawa University of Japan visited the COMPASS project team and every evening we did some operations for their STARS-C cubesat.

We successfully tracked their satellite at total of 10 passes over Aachen and sent some commands to their satellite on their behalf.

For that our groundstations at the Eupener Straße as well as our groundstation at the Hohenstaufenallee were in action!

We received CW signals at 437.245MHz base frequency. The analyses is still ongoing but first checks are showing quite promising data acquired! We are really happy that we were to be able to help our friends from Japan and hope that in the future we can help them again!
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compass.two
am 01. Januar 2018 um 01:54 Uhr
Happy new year!! We wish you all the best and a lot of interesting satellite contacts for 2018!
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compass.two
am 31. Dezember 2017 um 14:58 Uhr
Soyuz MS-07 voice capture during pass over our ground station DL0FHA

Autors: Sacha Joseph Tholl, Ian Benecken
Operators: Ian Beneken, Kübra Yilmaz
Translator: Alina Schneider

Very fortunate, the compass team was generously rewarded by Santa Claus on December, the 18th between 13:22:47 and 13:25:66 utc. The Soyuz-MS 07 had left Baikonur launch pad LC-1 one day earlier, carrying cosmonaut commander Anton Shkaplerov, the Japanese astronaut Norishige Kanai and the American astronaut Scott Tingle to the International Space Station (ISS). This time, the Soyuz had to take the 2 day rendezvous approach (34 Orbits) to the ISS instead of the usual six hours (4 Orbits) travel, due to certain orbital parameters of the ISS. This was indeed our fortune. In-fact, we were able to receive five consecutive voice transmissions performed by astronaut commander Anton Shkaplerov aboard the Soyuz-MS 07 as he was most probably being in communication with TSuP (Mission Control) Moscow.

Because the Soyuz rapidly changes its orbit due to the high number of orbit adjustment burns called DV (delta velocity) burns, the orbital parameters change quite rapidly. In order to check the validity of the TLE retrieved from Celestrack, we counter checked the current position with the live tracking interface provided by TSuP publically from the website before we pointed our antennas toward the Soyuz. Here you can find the url for the http://193.233.61.44/miopApp/miopClient1?service=isstd
As can be seen from the table above, the first voice signal from Soyuz MS-07 came through our antennas at an elevation angle of 25.6° at 13:23:01 utc. At that time, with a range of 552 km away from our ground station, the Soyuz was coasting over the village Wetterzeube, some 36 kilometers away from Jena in Germany.

Then as the capsule passed over Mittweida / Germany, we received the 2nd voice signal. One Minute later, we captured the 3rd voice signal when the Soyuz already was over Jankowice in Poland. The 4th voice contact we received as the capsule was already coasting over Maškovce in Slovakia, some 50 kilometers away from the nearest Ukrainian border. The last voice transmission we got from Soyuz, it was coasting over the town Petryliv, which is located in the Ivano-Frankivs'ka region of Ukraine, some 1444 kilometers away from DL0FHA ground station.

A shortened audio recording of the captured voice transmission during the pass over DL0FHA can be retrieved using the following link:
https://soundcloud.com/user-390566897/soyuz-ms-07-comm-1322z
The complete replay video of the soyuz pass and the captured voice signals including the HDSDR waterfall and the ground track simulated by Orbitron can be viewed here:
https://www.youtube.com/watch?v=0E_HSB21kZI
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compass.two
am 19. Dezember 2017 um 17:38 Uhr
compass.two
am 24. November 2017 um 18:06 Uhr
OSCWorkshop 2017 is coming to an end 😞
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compass.two
am 23. November 2017 um 10:23 Uhr
OSCW workshop just started and Compass Team is all systems go!
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compass.two
am 14. November 2017 um 10:36 Uhr
This is our most extreme recent NOAA image. It shows mostly the atlantic ocean. But one can see a glimpse of Iceland and Greenland at the top and a small island of the Azores "Ilha das Flores" at the bottom.

The picture was received as the NOAA 15 Satellite passed with only a maximum of 5 deg elevation above horizon.
Our antenna is capable of receiving this signals even lower than 1 deg. Only because of the sensitive antenna and the amazing signal strength of the NOAA satellites it is possible to receive pictures so far from our groundstation, located in the very west of germany. Mission operators: Ian Benecken, @Michael Wypschol, Tobias Häusler
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compass.two
am 04. November 2017 um 22:03 Uhr
Last Thursday we analyzed what we received last Saturday when we had your mulit-groundstation tracking session. Our goal was it to check if the TLE data of COMPASS-2 and VENTA-1 were switched. So we pointed our antennas at the Venta-1 TLE. However we were not able to receive any data from COMPASS-2 nor VENTA-1, but we received data from Robusta-1B and VZLUsat-1.

Here you can see a (German) video of all data we received on that day, our flight loop and an analysis from our flight director Sacha Tholl at the end:

https://www.youtube.com/watch?v=-lOlqRr5-i8
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Letzten Donnerstag haben wir als COMPASS Bodenstationsteam den Multi-Groundstation Überflug analysiert den wir vorherigen Samstag durchgeführt haben. Das Ziel dieser Aktion war es zu überprüfen ob die TLEs von COMPASS-2 und VENTA-1 vertauscht sind. Dafür haben wir auf die TLE von Venta-1 gehalten Jedoch haben wir weder von COMPASS-2 noch von VENTA-1 Telemetriedaten empfangen können. Jedoch von Robusta-1B sowie VZLUsat-1.

Hier könnt ihr ein Video unseres Überfluges von letzten Samstag sehen mit unserem jeweiligen Flight Loop. Am ende des Videos gibt unser Flight Director Sacha Tholl noch eine abschließende Analyse:

https://youtu.be/qmbHMvP1mPg
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compass.two
am 02. November 2017 um 17:36 Uhr
Last Saturday we tracked Robusta-1B and Venta-1 with mulitple antennas we have at our campus at FH Aachen. One was of course our main Yagi-antenna on top of the roof of the Faculty of Aerospace Engineering at the Hohenstaufenallee but we also had the chance to use a Yagi-antenna at Faculty of Electrical Engineering at the Eupener Straße. On top of that we set up a mobile antenna at the Aachen observatory. We received some interesting telemetry the analysis is still ongoing. Stay tuned!

Letzten Samstag hatten wir die Chance Venta-1 sowie Robusta-1B mit mehreren Antennen zu tracken! Neben unserer Yagi-Hauptantenne auf dem Dach der Hohenstaufenallee am Fachbereich 6 Luft- und Raumfahrttechnik hatten wir auch die Chance die Yagi- Antenne an der Eupener Straße am Fachbereich 5 Elektrotechnik zu benutzen. Darüber hinaus haben wir eine mobile Bodenstation an der Sternwarte Aachen installiert gehabt. Mit dieser Konfiguration konnten wir spannende Telemetrie empfangen. Die Analyse steht noch aus.
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compass.two
am 22. September 2017 um 17:05 Uhr
Wir haben einen neuen Operator/Flight Controller in unseren Reihen! Willkommen im Team Kübra Yilmaz!

We have a freshly new certified operator/flight controller in our team! Welcome Kübra Yilmaz!
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compass.two
am 21. September 2017 um 02:17 Uhr
Tonight, we received: VZLUSAT-1, Lituanicasat-2, Funcube-1 and NAYIF-1 which is a cubesat from United Arabian Emirates 🙂 Operatrors: Jannik Schatz and Sacha Joseph Tholl
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compass.two
am 15. September 2017 um 01:24 Uhr
Today, besides doing some theoretical revisions about satellite communications, we made a short satellite tracking session during which we received NOAA-18, Grifex and SKcube:
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compass.two
am 12. September 2017 um 11:32 Uhr
Yesterday evening the mission operators David Krieger and Jannik Schatz were very busy at DL0FHA! Well done!
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compass.two
am 11. September 2017 um 01:22 Uhr
So Finally I decoded C-Stars cw telemetry beacon,
playing back a hundred million of times the pre- recorded mp3 audio from the IQ-file in slowmo using a morse table. I was able to decode but took me ages to decode the first 2 lines...... Then PE0SAT proposed me to use FL-Digi and the 3rd and 4th Line was decoded immediately 🙂 Thank you man, you are awesome!
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compass.two
am 09. September 2017 um 22:07 Uhr
Lets us help this early bird, the Stars-C!
Tomorrow at 06:00 we will attempt to send the command to deploy the Daughter from the Mothership of STARS-C in presence of Prof. Masahiro Nohmi at Compass-2 / DL0FHA. Hopefully it will work despite the undeployed receiver antenna. We will try (if needed) a second time during the pass of 07:35. Downlink beacon frequency is 437,245MHz. Wish us good luck 🙂
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compass.two
am 09. September 2017 um 08:51 Uhr
This early morning at 07:01 we got Stars-C almost from Horizon to Horizon, very strong beacon signal of Mother satellite 🙂
Operators: Masahiro Nohmi and Sacha Joseph Tholl🤣🤣🤣
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compass.two
am 08. September 2017 um 01:09 Uhr
Tonight's Session on DL0FHA Ground Station. Together with Prof. Masahiro Nohmi from Shizuoka University / Japan (Project lead of Stars Satellites), we captured NOAA-18, NOAA-15, VZLUSAT, D-SAT and Tigrisat. Operators: David Krieger, Jannik Schatz, Tristan Kallerhoff, Kevin Mountman and Sacha Joseph Tholl
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compass.two
am 01. September 2017 um 01:38 Uhr
TIGRISAT AOS:21h16utc LOS:21:30 elmax:42.5°@21h22utc and D-Sat
Operators: David Krieger, Sacha Joseph Tholl and Danial Haghoo
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compass.two
am 28. August 2017 um 00:09 Uhr
Decoded signals tonight: Funcube-1; Lituanicasat-2; SKcube 🙂 Robusta-1b and Pegasus received but not been able to decode :-/. Operator: Sacha Joseph Tholl. I also provided a video, showing the live reception of LituanicaSat-2: https://www.youtube.com/watch?v=IjCp9N-Fc-Q
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compass.two
am 27. August 2017 um 22:36 Uhr
Hey Guy's, I have to face one dilemma: Inflatesail,
Lituanicasat-2 and D-Sat are approaching our air- space. Which one should I track? 🙂 PE0SAT Mike Rupprecht