基于深组合应用的GPS接收机设计

Design of a GPS receiver based on application in ultra tight coupling GPS/SINS system

为了能在GPS接收机的基带信号处理部分引入SINS的辅助信息,并且灵活进行接收机的参数设定和加载新的信号处理算法,提出了一种基于FPGA/DSP平台的GPS接收机设计。用Xilinx的Spartan 3E-1600完成RF数据的采集和AGC控制,对采集数据进行相干累加计算;用TI公司TMS320系列的VC6727完成基带信号处理和PVT解算。同时,基于对低价、小尺寸的考虑,RF前端用分立元件进行设计。该接收机尺寸小,功耗低,参数控制灵活,有较好的通用性和兼容性,并且提高了动态性能和抗干扰能力。

A design of GPS receiver based on FPGA and DSP is presented to import the velocity-aiding of SINS into base-band signal processing of GPS receiver and set parameter and algorithm flexibly.The Spartan 3E-1600 completes data sampling,auto gain controlling and coherent accumulating.The TMS320VC6727 accomplishes base-band signal processing and calculation of PVT.RF circuits are composed of independent elements.This GPS receiver is small size,low-cost,high-accuracy and provides flexible parameter-controlling.It offers compatibility and upgrades to accommodate different needs.The receiver has improved dynamic performance and anti-jamming capabilities.