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MAROC-TUBSAT
The Project
The MAROC-TUBSAT project is a cooperation between CRTS Morocco and the Institut für Luft-und Raumfahrttechnik in Berlin, where the Moroccan side is responsible for payload and launch and the German side for the satellite bus.
The main tasks of the satellite are Earth remote sensing and vegetation detection with a medium resolution of about 300 m, store and forward communications for mobile localization and developing attitude control strategies for high resolution earth observation.
Technical Characteristics
- Overall mass: 47 kg
- Overall dimensions (without antennas) 320 x 340 x 362 [mm]
- Power:
- 4 Solar Panels, 320 x 320 mm, 34 cells in series, max. 14 W each
- 4 NiH2 Batteries, 10V nominal voltage, 12 Ah
- PCU for power control, conditioning and distribution
- electronic fuses and latch-up protection
- Communication
- TTC1 in UHF, Modulation FFSK, 1200/2400 Baud, 3.5 W RF output
- TTC2 in VHF, Modulation FFSK, 1200/2400 Baud, 5.0 W RF output
- CRC and FEC check
- Data handling and processing
- OBDH with 256 kB static RAM, 128 kB EEProm, 64kB ROM
- Model Calculator with 512 kB RAM, 256 kB EEprom, 64kB ROM
- SEU protection
- Attitude Control System
- 3 Wheel / Gyro couples in orthogonal axes
- Star Sensor for 3 axes inertial attitude determination
- 3 axes magnetic field sensor
- magnetic coil in X axes
- single solar cells for sun determination (emergency/coarse mode)
- S-Band Transmitter with patch antenna
- Modulation BPSK, FEC, max 250 kBaud, 2.0 W RF output
- Camera
- CCD Matrix Array, 770 x 576 Pixel, Pixelsize 32.5 µm
- optics: focal length 72 mm, f/number 6
- FOV ca. 8 °
- filter for near infrared
- nominal integration time 28 ms
- digital resolution 12 Bit
- Payload data handling
- Frame Data Handling System
- Messaging system for store and forward communication
More information: ILR, TU-Berlin
MAROC-TUBSAT was launched with a Zenit rocket on the 10th of December in 2001 into a sun-synchronous orbit with an altitude of 1000 km from the Baikonur Cosmodrome. Three years after launch, the satellite is still complete operational.
German Team:
Project Manager: P. Butz (1995-2000 TU-Berlin)
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