About IVS Observing Program Network Stations Data&Products Analysis Technology Publications Meetings

IVS Observing Program

Session Descriptions: All IVS-R&D Sessions

Code DB name Stations Purpose Data rate (Mb/s) Min.
SNR
X/S
2002 R&D Sessions
RD0202 02MAR05XA ApGcKkMaNyWfWz High SNR, 7-8 scans/hr, 36 sources 256 80/60
RD0204 02APR03XA ApGcKkMaNyWfWz same as rd0202 plus 3 22-min scans on 4C39.25 256 80/60
RD0205 02MAY15XA ApGcKkMaWfWz same as rd0202 256 80/60
RD0206 02JUN12XA ApGcKkMaNyWfWz same as rd0202 256 80/60
RD0207 02JUL10XA ApGcKkMaNyWfWz same as rd0202 256 80/60
RD0209 02NOV06XA ApGcKkMaNyWfWz same as rd0202 256 80/60
RD0210 02DEC04XA ApGcKkMaNyWfWz same as rd0202 256 80/60
2003 R&D Sessions
RD0301 03JAN15XA ApGcKkNyTcWfWz compare to r4054 (similar network but 112 Mb/s) 256 20/15
RD0302 03FEB12XA ApGcKkNyTcWfWz compare to r4058 256 20/15
RD0303 03MAR26XA ApGcKkNyTcWfWz compare to r4064 256 20/15
RD0304 03APR23XA ApGcKkNyTcWfWz compare to r4068 256 20/15
RD0305 03MAY21XA ApGcKkNyTcWfWz compare to r4072 256 20/15
RD0306 03JUL16XA ApGcKkNyTcWfWz compare to r4080 256 20/15
RD0307 03AUG27XA ApGcKkNyTcWfWz compare to r4086 256 20/15
RD0308 03SEP10XA ApGcKkNyTcWfWz compare to r4088 256 20/15
RD0309 03OCT22XA ApGcTcWfWz compare to r4094 256 20/15
RD0310 03NOV05XA ApGcNyTcWfWz compare to r4096 256 20/15
2004 R&D Sessions
RD0401 04MAR24XA KkNyOnWfWz Gigabit session with standard SNR 1024 25/15
RD0402 04APR21XA KkNyWfWz Gigabit session with high SNR 1024 70/70
RD0403 04MAY12XA KkNyOnWfWz Gigabit session with high SNR 1024 80/80
RD0404 04JUN16XA ApFtGcKkTsWfWz Multi-INT Kk-Wz, standard R4 for other stations 112 20/15
RD0405 04JUL07XA ApFtGcKkNyTsWfWz Multi-INT Ts-Wz 224 Mb/s, standard R4 for other stations 112 25/20
RD0406 04AUG11XA WfWz Gbit session with low elevations 1024 50/40
RD0408 04OCT27XA ApGcHoKkNyTsWfWz Multi-INT Kk-Wz 1024 Mb/s, standard R4 for other stations 112 20/15
RD0409 04NOV03XA ApKkWfWz (1) Multi-INT Kk-Wz, (2) Ap-Wf phase connection, (3) 2 very weak sources 1024 Kk-Wz 20/15, Ap-Wf 80/80
RD0410 04DEC15XA ApKkWfWz (1) Multi-INT Kk-Wz, (2) Ap-Wf phase connection 1024 Kk-Wz 20/15, Ap-Wf 80/80
2005 R&D Sessions
RD0501 05JAN19XA ApKkNyOnWfWz Gigabit session 1024 80/60
RD0502 05FEB08XA ApGcKkNyOnWfWz Gigabit session 1024 80/60
RD0503 05MAR30XA ApGcKkNyOnWfWz Gigabit session 1024 80/60
RD0504 05APR06XA GcKkNyOnWfWz Gigabit session 1024 80/60
RD0505 05MAY18XA ApGcKkNyWfWz Gigabit session 1024 80/60
RD0506 05JUN21XA ApGcKkNyOnWfWz Gigabit session 1024 80/60
RD0507 05JUL12XA ApGcKkNyOnWfWz Gigabit session 1024 80/60
RD0508 05AUG17XA ApGcKkNyOnWfWz Gigabit session 1024 80/60
RD0509 05NOV15XA ApGcKkNyOnWfWz Gigabit session 1024 80/60
RD0510 05DEC07XA ApGcKkNyOnWfWz Gigabit session 1024 80/60

† Click on Code link for details and operation notes.
†† Download pdf version of IVS R&D description table.

2002 IVS-R&D:
The purpose of the 2002 R&D sessions is to investigate methods for improving the VLBI technique. This may include studies of instrumental effects or other systematic effects. The sessions occur nominally every month but may be changed depending on the design of the sessions.

2003 IVS-R&D:
The goal of the 2003 R&D sessions, as decided by the IVS Program Committee, is to compare the results of the IVS-R1 and the IVS-R4 sessions. The IVS-R4 sessions seem to be achieving better earth orientation results with a lower data rate (56 vs. 256). The R&D sessions are being scheduled to aide the analysts in understanding the 2002 results of the IVS-R1 and IVS-R4 sessions by scheduling sessions with a simular IVS-R4 network using the IVS-R1 observing mode.

2004 IVS-R&D:
The goal of the 2004 R&D sessions, as decided by the IVS Program Committee, is to record at a Gbit/s data rate to evaluate the geodetic results. These experiments will also test the entire data flow from scheduling through analysis for the higher data rate. There are 10 R&D sessions. Participating stations will vary depending on when stations are equipped with Mark 5 systems. R&D 1, 2, 3, 6, 9, 10 were Gbit/s sessions with various purposes. A second type of R&D session was proposed and observed, with the purpose to compare the accuracy of the 1-hr Intensive sessions with that of 24-hr sessions. This proposal was observed in R&D 4, 5, 8.

2005 IVS-R&D:
The goal of the 2005 R&D sessions, as decided by the IVS Program Committee, is to record at a Gbit/s data rate to evaluate the geodetic results. These experiments will also test the entire data flow from scheduling through analysis for the higher data rate. There are 10 R&D sessions. Participating stations will vary depending on when stations are equipped with Mark 5 systems.