^ Quoted from a previous post.The transmitted code is called "pseudo-random code" because it looks like a noise signal. When a satellite is generating the pseudo-random code, the GPS receiver is generating the same code and tries to match it up to the satellite's code. The receiver then compares the two codes to determine how much it needs to delay (or shift) its code to match the satellite code.
Does anybody have a design reference for this, please share.
Or some link to a paper which explains this unit's internal inside and out.
Any idea how this done. I think and suppose it's done through an analog calculator by comparing the phrase difference
and feed backing it through a PLL while phase difference is zero. In that method there should be a nasty hack of sigma
delta encoding to encode it back to a digital signal and count it.I just guessed , looking forward for a real reference
design , or any idea how this could be archived?
I have little experience in Mix signal design but these chips are still sounds to like magic box. I hate this magic box
thing. Sooner or later I want to open it. I got interest to do so.
--Thanks in advanced--
