Hi, 2019!

Ultra Global TEC Maps ››

Running Log

  • 2019-08-25,02:00:01@IRIS is beginning to process global GNSS data on 8/24,2019(DOY:236).
  • 2019-08-25,02:00:01@IRIS is starting to download ephemeris and GNSS data.
  • 2019-08-25,02:20:15@Data are downloaded. Time consumption:20.212 minutes.
  • 2019-08-25,02:21:43@Preprocessing is done. Time consumption:1.4635 minutes.

Run Time Statistics

Precision (Unit:TECU)

Sigma Mean residuals STD residuals RMS residuals
1.580 0.040 2.500 2.500

Global TEC Maps (Unit:TECU)


Global TEC Maps (Unit:TECU)

Satellite DCB (Unit:ns)


Frequency Distribution of Residuals (Unit:%)


Frequency Distribution of Absolute Residuals (Unit:%)


Frequency Distribution of Observed Satellites (Unit:%)



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Address: Room 103, International School, Beihang University, No. 37 Xueyuan Road, Haidian District, Beijing, 100083, P.R. China

Email: ac@ionosphere.cn

Phone: +86 16601168599


Focus and concentration on studying ionospheric models. Implementation service of ionospheric delay correction for satellite navigation and wide-area, local-area augmentation system. A basis paltform for exploring the change rules and physical mechanism of the ionosphere.

To understand the structure and change rules of the ionosphere; To reduce the space environment risk of satellite lauch; To improve the performance of satellite navigation system and radar; To increase the reliability of radio communications; To strengthen early warning and forecasting of earthquake and tsunami.