...
Example of such an orbit plan is below:
The details of each observing mode are still to be provided by SoloHI.
| Observing modes - Example plan | Use case | #images / day | Science data volume / day | SoloHI data rate | Observing duration / orbit | |
|---|---|---|---|---|---|---|
| (Gbits) estimate | (kbits/s) | (days) example | ||||
| Perihelion programs: | 0.28-0.29 AU | |||||
SoloHI Solar Wind Turbulence @perih | 1296 | 2.22 | 26.5 | 3 | ||
SoloHI Shock Formation @perih |
| 468 | 2.54 | 30.3 | 3 | |
| Near-Perihelion programs: | 0.29-0.36 AU | |||||
| SoloHI Near-perihelion Synoptic Program | 348 | 1.69 | 20.3 | 5 | ||
| SoloHI Solar Wind Turbulence Near-perihelion | 750 | 1.94 | 23.2 | 2 | ||
| SoloHI Shock Formation Near-perihelion | 516 | 2.45 | 29.3 | 2 | ||
| Far-Perihelion programs: | 0.36-0.42 AU | |||||
| SoloHI Far-Perihelion Synoptic Program | 132 | 1.64 | 19.7 | 7 | ||
Southern  Out-of-ecliptic programs: | 0.5-0.7 AU | |||||
| SoloHI Southern Synoptic Program | 104 | 0.84 | 10.3 | 8 |
...
Examples of more-detailed observing program for 1 type of orbit during the mission (source: 04_130904_SoloHI_CDR_ObsProg.ppt):
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Based on table above:
- a typical perihelion programme would produce ~25kbps (during 4 days), -> see modelled observations HI_SHOCK_PER (DATARATE=30300 [bits/sec]), HI_TURB_PER (DATARATE=26500 [bits/sec]),
- near-perihelion SoloHI would produce ~20kbps (during 8 days) , -> see modelled observation HI_SYN_PER (DATARATE=20300 [bits/sec])
- ~18.5kbps even further out (during 12 days) and -> see modelled observations HI_SYN_NEAR (DATARATE=19700 [bits/sec])
- in the far-out RSwindow, a datarate around 10 kbps would be reached. -> see modelled observations HI_SYN_FAR (DATARATE=10300 [bits/sec])
(see also SoloHI concept study report Dec 2011 )
How to organize SoloHI observations in coordination with the other instruments, i.e. does SoloHI have 'observing modes' to choose from for each solar distance?, is still to be discussed in more detail. Also, while the schema above may be optimal from a science perspective, the varying downlink rate & SSMM storage limits may impose limitations on when which datarate can be used.