Date
Attendees
- Attending: Gara, Evelyn, Amund, Mariusz, Sivert
- Late-comers: Joao, Milica, Mariusz
Goals
- Weekly status meeting
Files
- Processing (from Milica)
- Compression algorithm table done (on gdrive)
- Some algorithms (CCSDS etc) are being implemented on hardware – being tested. Preliminary results are promising
- JPEG2000 with reversible wavelet transform
- Some problems with prototype that Julian will try to fix
- Once Joao has more time, he will look into some more algorithms
- Satellite bus update
- OpenCosmos demo last week – Hardware-in-the-loop software/hardware
- Positive to ADCS collaboration
- Risk workshop
- First iteration: Thursday 13-14
- Second iteration: when both Joao and Sivert are available
- From then on, every other week during weekly meeting (15 minutes update)
- Hopavågen
- IMU and GPS software/hardware integration are pretty much done.
- will meet with Maritime robotics today to see about fitting the payload into their UAV.
- Joao has booked a big van for the testing
- Sivert will learn more about it
- Rest of the week should be final payload assembly and testing camera settings
- HSI Camera V6
- There are a couple of outcomes:
- Spatial resolution is improved to 250 m*58.5 m per pixel.
- Please look at Figure 7. for the conclusion on performance comparison between the different versions
- Hence the effect of higher SNR and optical resolution gives the win to V6 (SNR vs. optical resolution is a trade-off)
- This shows that decision should lean towards V6 when we think performance
- Decision on slit width (25 vs 75 um) needs to be done
- Constraints of cost, size (we will have to go from 3U to 6U CubeSat structure), launch cost for satellite etc.
- Opto-mechanical issues and coating
- Version 6 does not perform remarkably better in terms of SNR (number of photons) however it has increased satisfactorily (V6 (75 um) twofold compared to V.4, V6(25 um) x1.4 compared to V4)
- Mission update
- Design and sizing of the reaction wheels (worst case)
- Sufficient with small torques with 1deg/s
- 60g wheel with 20mm radius
- Mariusz will go to NASA Ames mid-March
- Design and sizing of the reaction wheels (worst case)
- Communication status
- Ground station
- Discussion on what new components to buy
- Research on S-band components and ground stations
- Asked suppliers for more info
- Graph comparing to NKOM bands
- Data budget (estimation)
- Housekeeping data for QB50 programme
- SwissCube: 1680 bits
- Frequency allocation
- NKOM meeting scheduled 9th March
- Ground station