I'm writing a report on the mathematics of GPS, but I'm wondering what methods the GPS actually uses. What I've done is set up the four sphere equations and solve them using the Newton-Raphson method for four variables (using the Jacobian matrix of partial derivatives). But is this what a GPS receiver actually does, with the an initial guess and iterations? Because I saw that on several websites, but I've also read about other methods such as a least squares solution. Or is this something that depends on the receiver?
أكثر...
أكثر...