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ERS-2 and ERS-1 flying in tandem

23 January 1996

Since 16 August 1995 and until mid-May 1996, ERS-1 and ERS-2 are being operated simultaneously. This is the first time ever that 2 identical SARs are operating in tandem. The orbits of the two satellites are carefully phased to provide a 1-day revisit interval; this enables collection of (interferometric) SAR image pairs which will be used for the generation of a global Digital Terrain Model (DTMs) set as well as for many other novel applications such as differential interferometry. In this context, ESA has just released an Announcement of Opportunity to the scientific-academic community to evaluate the potential of SAR interferometry (INSAR) and differential INSAR for geo-hazard risk assessment arising from earthquakes, volcanic erruptions, landslides and glacial surges.

ERS-2 instruments

23 January 1996

The radar altimeter and its supporting microwave sounder are fully operational and the new GOME instrument is already producing data of exceptional interest, thus promising to be the best ozone monitoring instrument currently in orbit.

ERS-2 will track down the origins of ozone depletion

23 January 1996

The first scientifically meaningful results derived from the Global Ozone Monitoring Experiment (GOME) onboard its ERS-2 satellite.

PRARE available

23 January 1996

The PRARE entered its operational phase on 1 January 1996 and the PRARE ground station network is being progressively completed. The instrument is fully compliant with its specified performances.

ERS-2 SAR Acquisition Plan

22 January 1996

ERS-2 SAR Acquisition Plan

ATSR unavailable

19 January 1996

ATSR-2 remains unavailable.

Yearly ERS manoeuvre history

29 December 1995

ERS manoeuvre history for 1995 is available at ESOC'sNear-Earth Navigation and Geodesy site.

ATSR unavailable

22 December 1995

ATSR switch down due to a scan temperature out of limit.

The below INSAR baselines are available on line

21 December 1995

INSAR ERS-1 to ERS-1 baselines for November 1995 (Phase G), INSAR ERS-1 to ERS-2 baselines for November 1995 (Phase G), INSAR ERS-2 to ERS-1 baselines for November 1995 (Phase A), INSAR ERS-2 to ERS-2 baselines for November 1995 (Phase A)

Promising tests for the ERS-2 Scatterometer

29 November 1995

Good results have been obtained during the latest ERS-2 scatterometer tests. Although the data quality and long term stability is still under evaluation, the outlook is very promising for the ERS-2 instrument achieving full operational status. These new results have been achieved through an attenuation of the emission power and the adjustment of a few parameters relative to the stability of the emitting tube. In spite of a signal/noise relationship less favourable than on ERS-1, data quality is comparable to the ERS-1 Scatterometer data. The ERS-2 Scatterometer commissioning phase will start on January 1st, 1996 for a duration of three months. These activities shall not interfere with the ERS-1 and ERS-2 Tandem Operation in progress.

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