Over the past decade, the Global Positioning System has released pre-flight calibrations for the transmit antennas of the Block IIR/IIR-M, Block IIF, and GPS III satellites that make up the current GPS constellation. Frequency-specific phase variations (PHVs) provided as part of these data sets are of key interest for an accurate and consistent modeling of GNSS carrier phase observations in precise point positioning applications as well as orbit and clock offset determination of the GPS satellites themselves. For proper utilization of the manufacturer calibrations, complementary information on the phase center offset (PCO) from the spacecraft center-of-mass is required. We describe necessary processing steps for converting the raw phase calibrations of Lockheed Martin and Boeing into a representation compatible with antenna models of the International GNSS Service (IGS), and provide a detailed discussion of inherent assumptions for combining PHVs and PCOs from different sources. Comparison with estimated antenna data from globally distributed monitoring stations shows good consistency of PHVs and suggests the use of manufacturer-calibrated, azimuth-dependent patterns in future releases of the IGS antenna model. In terms of PCOs, the new Block IIF calibrations exhibit a systematic bias of about 12 cm from PCOs estimates based on the IGS20 reference frame. This value closely matches the bias observed for manufacturer calibrations of GPS III and Galileo satellites, and suggests a careful review of the contribution that GNSS can make to the scale definition of the International Terrestrial Reference Frame (ITRF).

在过去的十年中，全球定位系统已针对构成当前 GPS 星座的 Block IIR/IIR-M、Block IIF 和 GPS III 卫星的发射天线发布了飞行前校准。作为这些数据集一部分提供的频率特定相位变化 (PHV) 对于精确点定位应用中的 GNSS 载波相位观测的精确和一致建模以及 GPS 卫星本身的轨道和时钟偏移确定至关重要。为了正确利用制造商校准，需要有关航天器质心的相位中心偏移（PCO）的补充信息。我们描述了将洛克希德·马丁公司和波音公司的原始相位校准转换为与国际 GNSS 服务 (IGS) 天线模型兼容的表示的必要处理步骤，并详细讨论了组合不同来源的 PHV 和 PCO 的固有假设。与来自全球分布监测站的估计天线数据进行比较，显示 PHV 具有良好的一致性，并建议在 IGS 天线模型的未来版本中使用制造商校准的、与方位角相关的方向图。就 PCO 而言，新的 Block IIF 校准与基于 IGS20 参考系的 PCO 估计值存在约 12 cm 的系统偏差。该值与 GPS III 和伽利略卫星的制造商校准观察到的偏差非常吻合，并建议仔细审查 GNSS 对国际地面参考框架 (ITRF) 尺度定义的贡献。