A Northern Telecom STR2760 phase coherent differential GPS simulator is used to analyse the velocity accuracy achievable under aircraft dynamics using selected receiver technologies. The results of two C/A code L1 receiver types are presented herein, namely an Ashtech G-12~(TM), and a NovAtel PowerPack OEM2 equipped with special Precise Velocity (PV) firmware which improves the receiver generated Doppler measurements. Simulated aircraft trajectories with velocities up to 120 m/s, accelerations up to 50 m/s~2, and jerks up to 25 m/s~3, are used. The code and carrier phase observables are processed in single difference mode with the velocity estimates based solely on the Doppler observagles. The accuracy of receiver generated Doppler-derived velocities and that of integrated carrier phase-derived velocities are tested as a function of aircraft dynamics.
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机译：北部电信STR2760相干差分GPS模拟器用于分析采用选定接收器技术在飞机动态下可实现的速度精度。本文提出了两个C / A代码L1接收器类型的结果，即ASHTECH G-12〜（TM），以及配备有特殊精确速度（PV）固件的NOVATEL PowerPack OEM2，其改善了接收器产生的多普勒测量。使用高达120米/秒的速度的模拟飞机轨迹，可高达50米/秒的加速度，最高可达25 m / s〜3的混蛋。代码和载波相位可观察可在单个差模式下处理，其中速度估计仅基于多普勒观察仪。作为飞机动力学的函数，测试了接收器产生的多普勒导出的速度和集成载波相位衍生速度的精度。
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