| Date: | 2004-04-07 16:31:00 | |
| Sender: | Claudia Urschl <Urs Hugentobler <urs.hugentobler@aiub.unibe.ch>> | |
| Subject: | [SLR-Mail] No. 1203: New CODE QL Residual Report | |
| Author: | Claudia Urschl | |
| Content: | ******************************************************************************** SLR Electronic Mail 2004-04-07 16:31:00 UTC Message No. 1203 ******************************************************************************** Author: Claudia Urschl Subject: New CODE QL Residual Report Dear colleagues, we were reviewing our procedures generating the Quick-Look SLR Residual Report. This review was triggered mainly by the availability of precise GLONASS orbits and of two color tracking data. With our new procedure the reports will have a slightly modified format in order to accommodate the additional information: - GLONASS tracking data is included into the QL Residual Report. SLR residuals are based on the CODE GLONASS orbits. SLR validation over 140 of the final orbits show an RMS of 5 cm. - As SLR reflector offsets we use GPS: X: 0.8626 Y: -0.5245 Z: 0.6584 m GLONASS: 0.0000 0.0000 1.5416 m - All stations providing SLR tracking data via CDDIS are included. - Station names are no longer identified with a 4-character ID but with DOMES numbers. - The format concerning satellite numbering was slightly changed. GPS and GLONASS satellites are identified by the system identifiers ´G´ and ´R´, respectively. - The residuals are referred to ITRF2000 with the exception of the following stations where values from related slrmails are used: 7110 40497M001 slrmail.1103 7355 21612M002 slrmail.1126 7832 20101S001 slrmail.1111 (ASI solution) 7357 21601S005 slrmail.1118 - SLR data from both colors are analyzed and reported for two-frequency tracking systems. - For the old QL Residuals Reports the satellite ephemerides were computed with an epoch precision of 1e-6 seconds (5 mm in satellite position). With the new procedure the precision is 1e-9 seconds. We just sent the last old-style protocol for doy 097/2004 a few minutes ago and send now the corresponding new-style protocol. Starting with tomorrow´s automatic submission you will get the new, extended protocol. Please report if you find any problem. Best regards Claudia Urschl Urs Hugentobler From: Urs Hugentobler ******************************************************************************** |