基于GNSS的飞行器测姿系统设计与实现

Design and Implementation of Aircraft Attitude Measurement System Based on GNSS

中文关键词:  GNSS  姿态测量  载波相位  软件无线电

英文关键词:GNSS  attitude measurement  carrier phase  software radio

中文摘要:

      针对飞行器测姿需求，设计构建了一套具有测姿功能的软硬件系统。该系统采用宽带射频收发单元+FPGA+DSP的统一软件无线电架构，具有较高的灵活性和可扩展性，结合PMF+FFT快速捕获模块和长短基线快速整周模糊度解算模块，可以实现快速、高精度的姿态测量。根据实测结果推算，在15 m基线长度时的航向角测量精度为0.2242°/L，能较好地满足现阶段的飞行器姿态测量要求。

英文摘要:

      A set of software and hardware system with attitude measurement function is designed and constructed to meet the attitude measurement requirements of aircraft.The system adopts a unified software radio architecture，composing of broadband RF transceiver unit，FPGA unit and DSP unit,which has high flexibility and extensibility.Combining the fast capture module based on PMF + FFT and the carrier phase ambiguity resolution module based on long-short baseline,fast and high precision attitude measurement can be achieved.Calculated according to the measured results,the attitude accuracy is about 0.2242°/L at a baseline length of 1.5 m，which can better meet the requirements of aircraft attitude measurement at present stage.