Accuracy analysis of Galileo dual-frequency and triple-frequency short baseline solution under the condition of non-combined model
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摘要: Galileo系统是当前常用的定位系统之一，本文作者利用自编软件进行了一种非组合模型下Galileo系统双频与三频短基线解算试验. 经研究发现：对于9 km短基线，非组合模型下Galileo双频短基线解算水平精度优于5 cm，高程精度优于10 cm，三频组合解算精度较双频有明显提升，水平精度优于3 cm，高程精度优于4 cm.Abstract: Galileo system is one of the commonly used positioning systems at present. This paper uses self-edited software to carry out a dual-frequency and triple-frequency short baseline solution experiment of Galileo system under the condition of non-combined model. Research has found that for a 9 km short baseline, the Galileo dual-frequency short baseline solution under the non-combined model has a horizontal accuracy better than 5 cm, and an elevation accuracy better than 10 cm. The triple-frequency combined solution accuracy is significantly improved compared with that of dual-frequency. The horizontal accuracy is better than 3 cm. The elevation accuracy is better than 4 cm.
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Key words:
- Galileo /
- non-combined model /
- short baseline /
- dual frequency /
- triple frequency
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表 1 Galileo双频与三频短基线基线解算精度均方根（RMS）及三频较双频定位精度提升统计
频率组合 定位精度RMS/cm 三频较双频精度提升/% E N U E N U E1/E5a 3.06 4.79 8.91 65.03 51.15 64.76 E1/E5b 1.58 4.12 4.93 32.28 43.20 36.31 E5a/E5b 3.05 3.54 8.42 64.92 33.90 62.71 E1/E5a/E5b 1.07 2.34 3.14 
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