Patent ID: 6016121
Filing Date: 2000-01-18
Classification: G01S

Abstract:
A method of tracking both first global positioning signals at a first frequency and second global positioning signals at a second frequency different than the first frequency using a global positioning system (GPS) receiver having an intermediate frequency or frequencies input to channels of a digital signal processor adapted to generate a navigation solution, the method comprising:receiving both of the first global positioning signals and the second global positioning signals;separating the first global positioning signals having the first frequency from the second global positioning signals having the second frequency;translating the first global positioning signals having the first frequency and the second global positioning signals having the second frequency into first and second translated global positioning signals, respectively, having an intermediate frequency or frequencies different than the first and second frequencies; andcontrolling sequencing of the first and second translated global positioning signals to selectively provide the first and second translated global positioning signals one at a time to the channels of the digital signal processor for use in navigation solution determination, wherein translating the first and second global positioning signals and controlling the sequencing further includes coordinating power control of multiple RF translators and channel frequency switches used to translate and to selectively couple one at a time the first and second translated global positioning signals to the channels of the digital signal processor for use in navigation solution determination, thereby reducing the power consumption of the GPS receiver.