Just use a ruler, set some offset to start at from your position, keep the offset the same for the >=dimensions+1 measurements, and show how you can recover bot

Just use a ruler, set some offset to start at from your position, keep the offset the same for the >=dimensions+1 measurements, and show how you can recover both time (your ruler offset is your clock's offset from GPS time) and position just from the pseudoranges. The equations are fairly easy: (x - satellite[i].x)**2 + (y - satellite[i].y)**2 == (time_offset - satellite[i].pseudorange)**2 for your number of satellites, and it naturally extends to including a `z` for 3D, too.