About IVS Observing Program Network Stations Data&Products Analysis Technology Publications Meetings 2024 Master File Links HTML with session links Plain text Media master Notes Intensives HTML Intensives TEXT Intensives Notes IVS Live Guidelines Overlap Operations Observing Tasks Download Schedules Upload Log Files Master Files Session Descriptions Special Campaigns/Sessions CONT02 CONT08 CONT14 IYA09 CONT05 CONT11 CONT17 Mark 5 Usage Plan Observing Program Committee (OPC) Related Files 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.