通用航空GPS/BDS机载设备研究及设计

本文描述了 GPS/BDS 机载设备的总体架构和详细设计方法。基带处理部分，给出了基于 PMF-FFT 的捕获算法。基带处理电路主要完成对射频通道传送过来的中频信号进行采样、 数字滤波、信号处理、功能解算等功能。GPS/BDS 机载设备具备兼容 GPS、BDS 和 GLONASS 卫星导航系统的能力；具备卫星导航系统历书、星历、原始测量数据输出、RAIM 处理、差分处理、多种数据格式输出、BIT 系统自检、工作状态提示等能力。

Design and Research of GPS/BDS Airborne Equipment in General Aviation

This paper describes the structure and design method in detail for the GPS/BDS of airborne equipment. In the baseband processing parts, the acquisition algorithm based on PMF-FFT is presented. Baseband processing circuit mainly complete the collection, the digital filtering, the signal processing and function calculating of intermediate frequency signal that from RF channel. GPS airborne equipment has the ability of satellite navigation system, meanwhile has the capability of compatible with GPS, BDS and GLONASS. The equipment has ability of receiving almanac and ephemeris of satellite navigation system, the original measurement data output, RAIM processing, difference processing, a variety of data format output, BIT system self-checking, status display and so on.