Multi-Frequency Patterns of GNSS Receiver Antennas for the Carrier Phase

The file "IfE20_2132.atx" contains Phase Centre Corrections (PCC) for receiver\r\nantennas in the ATX format for following frequencies:\r\n* GPS: GL1C (G01), GL2W (G02) and GL5X (G05)\r\n* Galileo: EL1X (E01) and EL5X (E05)\r\n\r\nFollowing antennas are included in the file:\r\n* NOV703GGG.R2 NONE12420040\r\n* LEIAR25.R3 LEIT08360013\r\n\r\nThe PCC are estimated using spherical harmonics up to degree and \r\norder eight, whereby during the least square adjustment the odd parameters \r\n(e.g. a21, b21, a30, ...) are restricted to zero.\r\n\r\nPlease note, that the data is in experimental status and no (!) official \r\ncalibration product. Thus, it is free for scientific research/use only.

文件“IfE20_2132.atx”以ATX格式存储了接收机天线的相位中心校正值（Phase Centre Corrections, PCC），适用频段如下：
* GPS系统：GL1C（G01）、GL2W（G02）与GL5X（G05）
* 伽利略（Galileo）系统：EL1X（E01）与EL5X（E05）

本文件涵盖以下两款天线的校正数据：
* NOV703GGG.R2 NONE12420040
* LEIAR25.R3 LEIT08360013

本次相位中心校正值通过最高阶次为8阶的球谐函数估算得到；在最小二乘平差环节中，所有奇次参数（如a21、b21、a30等）均被约束为零。

请注意，本数据集处于实验状态，绝非官方校准产品，仅可用于科学研究与学术用途。