| SOD | Year | Day of Year |
Time of Day |
Data Impact | System | Description |
|---|---|---|---|---|---|---|
| 78212801 | 2023 | 317 | 12:00 | 2 | 6.01 | APD detector(100um) was used for routine ranging |
| 78212801 | 2023 | 317 | 12:00 | 2 | 5.01 | Use 5kHz laser(20ps) for routine ranging |
| 78212801 | 2021 | 265 | 08:00 | 2 | 6.01 | Use SHAO-ET instead of A033-ET |
| 78212801 | 2021 | 229 | 02:00 | 2 | 10.01 | Update NP generating software.Kurtosis calculations subtract 3 |
| 78212801 | 2021 | 203 | 08:00 | 2 | 10.02 | Update lageos preprocessing software.Use leading edge method. |
| 78212801 | 2021 | 164 | 08:00 | 2 | 5.01 | Use daheng laser |
| 78212801 | 2021 | 100 | 08:00 | 2 | 6.01 | CSPAD Detector replaced by SPAD |
| 78212801 | 2021 | 084 | 10:00 | 2 | 9.01 | Time and Frequency Standards replaced by the EndRun_Meridian |
| 78212801 | 2019 | 223 | 08:00 | 2 | 5.01 | Use 2kHz laser for routine ranging |
| 78212801 | 2017 | 201 | 02:00 | 3 | 5.01 | Change Max. Repetition Rate |
| 78212801 | 2017 | 192 | 02:00 | 3 | 8.01 | Change start pulse cable and stop pulse cable |
| 78212801 | 2017 | 074 | 10:00 | 0 | 99 | Add telescope pointing mode |
| 78212801 | 2014 | 053 | 00:00 | 1 | 8.01 | Longer the cable line of return detector for nolinear effect of Event Timer when doing calibration |
| 78212801 | 2013 | 329 | 00:00 | 2 | 6.01.01 | Replaced by the new return detector |
| 78212801 | 2013 | 309 | 10:00 | 0 | 99 | Modification of the data post-processing software |
| 78212801 | 2013 | 191 | 08:00 | 1 | 4.01 | The primary and second mirror replaced by the new one |
| 78212801 | 2013 | 015 | 02:00 | 2 | 6.01.01 | Event Timer replaced by the model A033 |
| 78212801 | 2013 | 014 | 12:00 | 2 | 6.01.01 | Detector replaced by the model 0432 C-SPAD |
| 78212801 | 2012 | 345 | 09:00 | 2 | 99 | Discriminator and power replaced by the new one |
| 78212801 | 2012 | 315 | 04:00 | 0 | 4.01 | The upgrading the servo control system |
| 78212801 | 2012 | 162 | 00:00 | 0 | 99 | Modification of the data post-processing software |
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