Variances of GPS Phase Observations: The SIGMA-e Model

被引：133

作者：

Hartinger, H. ^{[1
]}

Brunner, F. N. ^{[1
]}

机构：

[1] Graz Univ Technol, Engn Surveying & Metrol, A-8010 Graz, Austria

来源：

GPS SOLUTIONS | 1999年 / 2卷 / 04期

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

页码：35 / 43

页数：9