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> spoofing I don't understand how "spoof-to" works. If you have to mimic a satellite then isn't everyone going to get a different location? Unless you're tra
by themafia 4mo ago
> spoofing
I don't understand how "spoof-to" works. If you have to mimic a satellite then isn't everyone going to get a different location? Unless you're tracking a specific target how can you intentionally spoof them to a desired location? I'd assume the best you could do is create a fixed offset.
> The military wants to go mostly inertial and is working on better inertial systems.
Given the drift rate this is an idea for munitions but exceptionally difficult to actually operate in a vehicle.
- chadgpt3 4mo agoYou mimic several satellites
- azernik 4mo agoClock bias. Because the clocks internal to GNSS receivers are not that accurate, if they're not at the "targeted" location they'll see that all satellites are off by a given time offset, and think that their clock is just off by that much.
- deleted 4mo ago[deleted]
- adrian_b 4mo agoThere are low-drift-rate inertial solutions, but they have high cost and big size (i.e. laser gyroscopes and accelerometers, with atomic clocks). So I assume that the research effort is directed towards reducing the cost and size.
- themafia 4mo agoThe problem with that is if you turn off power to the aircraft then the IMU no longer maintains state and you will need to realign it on startup. The procedures for this are broadly incompatible with military missions.