GPS接收机射频前端链路预算分析

GPS navigation and positioning satellite communications in modern life occupies an increasingly important position. People propose harsh requirements for satellite communicate with the GPS. The link budget of GPS receiver RF module is used to deal with such contradiction as the signal quality and the ability to navigate. RF module is the first part of the receiver acqusiting the signal, and its capacity to deal with weak signal and sensitivity of signal power will determine the overall system of GPS receiver, such as positioning accuracy. The GPS RF module and the link budget is so essential to the entire satellite communication system.This article will propose the method of RF module link budget on the basis of the pratical application.