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by ge96 1405 days ago
Wonder if you could do point to point laser comms.
1 comments
kragen 1405 days ago
US military radios use FHSS spanning 225-420 MHz. I don't know details but I bet they're hard to jam or even detect.
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bob1029 1405 days ago
DSSS/FHSS schemes are almost magical in LPI and resilience when applied aggressively in a military setting.

Operating below the noise floor shouldn't be possible at first glance, but through the power of statistics it absolutely is feasible.

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kragen 1404 days ago
Hmm, I notice you mention LPI and resilience but not LPD (low probability of detection). Is DSSS maybe easier than FHSS for an adversary to detect on a waterfall plot and localize with phase correlation if they have a phased array? Or is it also suitable for LPD?
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RF_Savage 1404 days ago
Or 36-87MHz. And plenty of others.
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