GPS Receiver RF Front-End Enables Use of a Laptop PC for Soft Baseband Processing

摘要

Software techniques for use in the global positioning system (GPS) have recently captured the growing interest of communication and navigation engineers. Thanks to very-large-scale integration (VLSI) development, powerful CPUs and DSPs are now capable of detecting and decoding GPS signals in real time using software. The resulting software-based GPS receivers offer considerable flexibility in modifying settings to accommodate new applications without hardware redesign, using the same board design for different frequency plans, and implementing future upgrades.