Variances of GPS Phase Observations: The SIGMA-e Model

被引:126
作者
Hartinger, H. [1 ]
Brunner, F. N. [1 ]
机构
[1] Graz Univ Technol, Engn Surveying & Metrol, A-8010 Graz, Austria
关键词
Weighting Scheme; Density Ratio; Variance Matrix; Noise Term; Standard Weighting;
D O I
10.1007/PL00012765
中图分类号
TP7 [遥感技术];
学科分类号
081102 ; 0816 ; 081602 ; 083002 ; 1404 ;
摘要
The noise term of GPS phase data can be calculated from the measured carrier-to-noise power density ratios (C/N0). The C/N0 values are used in the proposed SIGMA-e model to calculate the variance matrix of double-differenced GPS phase data. Examples show the capability of this model to yield higher accuracies for GPS surveys than the use of the standard weighting scheme. Most importantly, the SIGMA-e model allows the use of noisier phase data from very low elevation satellites to overcome poor satellite geometry problems. (c) 1999 John Wiley & Sons, Inc.
引用
收藏
页码:35 / 43
页数:9
相关论文
共 5 条
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