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> How feasible would you estimate passive positioning systems? Totally feasible. DECCA and LORAN-C basically work on the same principle. have a number of tran
by KaiserPro 3y ago
> How feasible would you estimate passive positioning systems?
Totally feasible. DECCA and LORAN-C basically work on the same principle. have a number of transmitters at known locations and measure the phase/interference to get location.
However, there are other ways. Visual navigation is totally possible (think SLAM, but with a pre-computed map)
- DoctorOetker 3y agoDECCA and LORAN-C are not passive but rely on second parties maintaining transmitters. I may be wrong, but I would hazard SLAM would require an enormous amount of data
- KaiserPro 3y ago> rely on second parties maintaining transmitters. yeah, this is true. Passive radar does the same thing. its passive because the system isn't transmitting, something else is. SLAM data can be pretty sparse. The keypoints for a city the size of london is under 100gigs. (although that depends on your algorithm) but if you think about the amount of effort required to make GPS work, keeping an active visual map of a country isn't actually that much in comparison.