AAUSAT-II (Aalborg University CubeSat no 2) is the second student-built

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built and operated by students from

Aalborg University Aalborg University (AAU) is an international public university with campuses in Aalborg, Esbjerg, and Copenhagen, Denmark. Founded in 1974, the university awards bachelor's degrees, master's degrees, and PhD degrees in a wide variety of subje ...

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. It was launched 28 April 2008 05:53:51

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Satish Dhawan Space Centre Satish Dhawan Space Centre – SDSC (formerly Sriharikota Range – SHAR) is the primary spaceport of the Indian Space Research Organisation (ISRO), located in Sriharikota, Tirupati district, Andhra Pradesh. The spaceport is located on an isl ...

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on a

Polar Satellite Launch Vehicle The Polar Satellite Launch Vehicle (PSLV) is an expendable medium-lift launch vehicle designed and operated by the Indian Space Research Organisation (ISRO). It was developed to allow India to launch its Indian Remote Sensing (IRS) satellite ...

(PSLV) launch vehicle. AAUSAT-II carries a

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sensor.

Educational objective

The primary purpose of the construction of satellites at the University of Aalborg is to give the students engineering capabilities beyond what is normally achieved within a masters program.

History

Student satellite activities at Aalborg University (AAU) started in 2003 as a result of AAU's involvement in the first pure Danish research satellite, Ørsted, which was successfully launched in 1999. AAUSAT-II's predecessor was AAU CubeSat which was constructed in the period 2001-2003 and was launched 30 June 2003. The project started in the summer 2003. The construction of AAUSAT-II began in 2005.

Operations

After the launch on 28 April 2008, AAUSat-2 beacon was received at Cal Poly University in California but

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communications could not be achieved as it turned out that AAUSat-2 was transmitting at a lower level than anticipated. After upgrades to the ground station were completed, fully functional two-way communication were achieved and continued with normal operations until May 2009 after a year of successful operation. The ground station has remained in operation and beacons are received on a regular basis, and AAUSat-2 is still considered operational, although heavy tumbling is observed (December 2009). Beacons were still received on a regular basis as of March 2011. In addition, AAUSat-2 does receive and acknowledge commands from ground, and log files have been requested and received. Due to the very high tumbling (more than 2.5 Hz) it has not been possible to decode log files. In March 2012, the AAUSAT-II mission was officially retired by the project — but the CubeSat is still up and running. As of 2022, the satellite continues to function.

Mission definition

AAUSAT-II consists of several sub-systems: * ADCS: Attitude Determination and Control System * CDH: Command and Datahandling System * COM: Communication System * EPS: Electrical Power System * GND: Ground Station * MCC: Mission Control Center * MECH: Mechanical System * OBC: On-board Computer System * P/L: Payload System Technical details:

Amateur radio information

* Callsign: OZ2CUB * Up/downlink: 437.425 MHz AFSK & FSK * Bit rate: 1200-9600 bit/s (1200 as standard mode) *

AX.25 AX.25 (Amateur X.25) is a data link layer protocol originally derived from layer 2 of the X.25 protocol suite and designed for use by amateur radio operators. It is used extensively on amateur packet radio networks. AX.25 v2.0 is responsible for e ...

FM CW TLM

References

External links

Official historic homepage

Launch campaign homepage
{{Orbital launches in 2008 Student satellites Aalborg University Spacecraft launched in 2008 CubeSats