Table 2 Accuracy evaluation of BeiDou global ionospheric model
From: Basic performance and future developments of BeiDou global navigation satellite system
Evaluation period | BDGIM assessed by CODG (data from 2019.07.01 to 2019.07.31) | |||
|---|---|---|---|---|
Zones | Indicators | ≥ 15 TECu | < 15 TECu | Total |
Low latitude | Bias/TECu | − 5.45 | − 2.56 | − 3.35 |
STD/TECu | 2.75 | 2.21 | 2.70 | |
RMS/TECu | 6.11 | 3.38 | 4.31 | |
Per/% | (72.45, 0.00) | (60.97, 0.23) | (64.13, 0.16) | |
Middle latitude | Bias/TECu | − 4.11 | − 2.16 | − 2.24 |
STD/TECu | 2.31 | 2.35 | 2.38 | |
RMS/TECu | 4.72 | 3.20 | 3.27 | |
Per/% | (75.48, 0.00) | (65.06, 0.70) | (65.45, 0.67) | |
High latitude | Bias/TECu | − 4.03 | − 1.18 | − 1.18 |
STD/TECu | 0.55 | 1.54 | 1.54 | |
RMS/TECu | 4.06 | 1.95 | 1.95 | |
Per/% | (74.53, 0.00) | (69.63, 1.79) | (69.63, 1.79) | |