In this video, you will get to know Everything about GPS (Global Positioning System) inside out. What is GPS? GPS Working Principle -Trilateration Method, Structure of a Space vehicle signal in GPS, Coarse Aquisition Pseudo Random(C/A PRN code) Code generation, Advantages of GPS, Disadvantages of GPS.
For a detailed report click here: https://synopsisscience.blogspot.com/2018/11/everything-about-gps-what-is-gps-how-it.html
In that link, you will get to understand everything about GPS in detail. Please let me know if you need any topics that want to be explained.