[Ecoste]

I wanna know more about the from scratch GPS receiver

[codyd51]

I am really glad to hear that there's interest, and hopefully I will have a 3-part series to share on this some time soon! Similar to Andrew's project linked down below, this is a 'true' home-brew receiver. I didn't know anything about DSP, etc, when I started out, so I learned a lot about signal processing (and the incredible techniques that make GPS work), and really hope I'll be able to publish it all soon!

[Terr_]

Not OP, but in the meantime this may help alleviate your thirst for "how could someone do GPS from scratch", especially the end parts about radio signals and encoding: https://ciechanow.ski/gps/

[thatcherc]

This is my favorite write up of someone truly building a GPS receiver from scratch: http://www.aholme.co.uk/GPS/Main.htm

A real tour de force of DSP - really cool stuff, and well-written

[CamperBob2]

Nice presentation!