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 observables. 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：北部电信公司的STR2760相干差分GPS仿真器用于分析使用选定的接收器技术在飞机动力学条件下可获得的速度精度。本文介绍了两种C / A码L1接收器类型的结果，分别是Ashtech G-12TM和NovAtel PowerPack OEM2，后者配备了特殊的精确速度（PV）固件，可改善接收器生成的多普勒测量结果。使用了速度高达120 m / s，加速度高达50 m / s〜2，加速度高达25 m / s〜3的模拟飞机轨迹。码和载波相位可观测值以单差模式处理，其速度估计仅基于多普勒观测值。测试接收器产生的多普勒推导速度的精度以及综合载波相位推导的速度的精度，作为飞机动力学的函数。
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