Patent ID: 7271766
Filing Date: 2007-09-18
Classification: G01S

Abstract:
1. A method for determining a position of a receiver from transmitted signals, the method comprising: (a) measuring at least a first range from first signals for a global navigation satellite system; (b) measuring at least a second range from second signals for a local positioning system; and (c) determining the position of the receiver from the measurements of (a) and (b); wherein the measurements of the second signals for the local positioning system have a code phase range accuracy better than one wavelength of a carrier of the first signals from the global navigation satellite system; wherein (a) comprises measuring from the first signals, the first signals having a carrier with a wavelength greater than 15 cm, and wherein (b) comprises measuring from the second signals, the measurements of the second signals have better than 2 cm code phase range accuracy.