DLR TUBSAT
| DLR Tubsat | |
|---|---|
| Country: |
 Germany
|
| Operator: |
 DLR
|
| COSPAR-ID : | 1999-029C |
| Mission dates | |
| Dimensions: | 45 kg |
| Size: | 0.32 x 0.32 x 0.32 m³ |
| Begin: | May 27, 1999 |
| Starting place: | SHAR |
| Launcher: | PSLV |
| Status: | Project finished |
| Orbit data | |
| Rotation time : | 99 min |
| Orbit inclination : | 98.36 ° (SSE) |
| Apogee height : | 737 km |
| Perigee height : | 716 km |
DLR-TUBSAT is a former research and earth observation satellite of the Institute for Aerospace ( ILR ) of the TU Berlin .
mission
The ILR took over the development and construction of the satellite, with Udo Renner as the project manager. The German Aerospace Center provided the financing for the satellite and the launch . DLR Berlin-Adlershof helped develop the optical payload.
The satellite was primarily used to train the students of the ILR and to develop new attitude control strategies. In particular the interactive attitude control system, i. H. the position of the satellite and thus its viewing direction could be actively changed from the ground using a joystick. This means that search operations, if the exact position of the target was not known, and active target tracking (e.g. of ships and aircraft) were possible. The ground resolution of the DLR-TUBSAT was 6 m. The video image was sent via S-band to any 3 m dish to which an ordinary television set was connected. The operator usually sat in front of this.
The satellite was controlled by the VHF / UHF ground station at the ILR in Berlin and by a UHF ground station at UNIS on Spitsbergen, which is controlled via TCP / IP from Berlin . The ILR had its own self-developed S-band 3 m ground station in operation, but the DFD Neustrelitz and SVALSAT (Spitzbergen) were also used to receive payload data.
The satellite was launched on May 26, 1999 with a PSLV -C2 from the Satish Dhawan Space Center and was in operation at least until 2006.
Technical specifications
- 32 cm × 32 cm × 32 cm cube shape
- 44.8 kg mass
- 4 solar panels
- 4 NiH2 batteries
- 3 CCD video cameras
- 16 mm apron sensor
- 50 mm apron sensor
- 1000 mm main telescope (6 m ground resolution)
- 3 reaction wheels
- 3 laser gyroscopes
- 2 coarse sun sensors
- a magnetic gate
- VHF / UHF-TT&C system
- S-band payload data system (for the video signal)
See also
Web links
- ILR: DLR-TUBSAT on the completed projects of the ILR (English)
- Stephan Römer, Udo Renner: Flight Experiences With DLR-TUBSAT (English; PDF; 102 kB)
- Gunter's Space Page: DLR-Tubsat (English)