4 ms·
They can definitely do on-board signal processing once down converted. This will have a substantial hit on total capacity though, which is what matters most. Se
by shaklee3 8y ago
They can definitely do on-board signal processing once down converted. This will have a substantial hit on total capacity though, which is what matters most. See my other comments.
Btw, you cannot use standard fpgas in space. They are a special kind hardened for radiation and redundancy.
- Rebelgecko 8y agoStandard FPGAs can be usable in space depending on where they are. Consumer stuff can do OK in LEO, especially if you have some sort of watchdog or voting system.
- shaklee3 8y agoI suppose you could, but all FPGA manufacturers sell space versions of their FPGAs. Do you know of anyone using non-space-grade? https://www.xilinx.com/applications/aerospace-and-defense/space.html https://www.xilinx.com/applications/aerospace-and-defense/sp...
- Rebelgecko 8y agoI haven't been following this space that closely for a few years, but when I was more familiar with the offerings from Xilinx and Altera, anything rad-hard was at least 2 generations behind. This led to correspondingly worse performance and SWaP (size, weight, and power). Some of the fancier SOCs like Xilinx Zynqs didn't have any rad-hard version at all. Using consumer or automotive grade chips is not unheard of, especially for lower budget things in LEO like cubesats.
- shaklee3 8y agoThey're behind, but you may end up installing far more of the non-hardened versions, and do the redundancy yourself. That seems like a tough trade-off to do given that there's no fixing it once it's there.