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0 pointsprpl3mo ago0 comments

those are GPS based too. You typically would have a circuit you trained off off 1PPS and hopefully had a 10 or so satellites in view.

You can get 50ns with this. Of course, you would verify at NIST.

0 comments

metaphor3mo ago

> ...and hopefully had a 10 or so satellites in view.

I believe you'll need 12 GPS sats in view to gain incremental accuracy improvement over 8.

YetAnotherNick3mo ago

GPS could be blocked easily, and AFAIK even given corrupted inputs. And HFT could possibly benefit from blocking or corrupting competitors GPS.

johncolanduoni3mo ago

Deploying a GPS jammer in civilized territory is a great way to go to prison.

dotancohen3mo ago

Would it actually go so far?

Would the police actually try to investigate from where came the jammer? Might the competing firm possibly even finance an investigation themselves privately? And if so, would the police then accept the evidence?

People have done far more evil things for money.

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cinntaile3mo ago

It's not like foreign adversaries care.

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j / k navigate · click thread line to collapse

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metaphor3mo ago

> ...and hopefully had a 10 or so satellites in view.

I believe you'll need 12 GPS sats in view to gain incremental accuracy improvement over 8.

YetAnotherNick3mo ago

GPS could be blocked easily, and AFAIK even given corrupted inputs. And HFT could possibly benefit from blocking or corrupting competitors GPS.

johncolanduoni3mo ago

Deploying a GPS jammer in civilized territory is a great way to go to prison.

dotancohen3mo ago

Would it actually go so far?

People have done far more evil things for money.

1 more reply

cinntaile3mo ago

It's not like foreign adversaries care.

1 more reply

j / k navigate · click thread line to collapse

0 pointsprpl3mo ago0 comments

those are GPS based too. You typically would have a circuit you trained off off 1PPS and hopefully had a 10 or so satellites in view.

You can get 50ns with this. Of course, you would verify at NIST.