EUMETSAT Polar System - Second Generation

The EPS follow-on system (EPS-SG) will provide continuity of observations and respond to the needs of the users in the 2020 time frame.

Activities are on-going for the definition of the follow-on EUMETSAT Polar System, to replace the current satellite system in the 2020 timeframe and contribute to the Joint Polar System to be set up with NOAA.

Through consultation with users and application experts, requirements have been defined for a range of candidate missions mainly in support of operational meteorology and climate monitoring. A number of on-board instruments, satellite platforms and ground support infrastructure are under study in coordination with ESA, NOAA, DLR and CNES.

The satellites will fly, like Metop, in a sun synchronous, low earth orbit at 817 km altitude and 09:30 local time of the descending node, providing observations over the full globe with revisit times of 12 to 24 hours, depending on instrument.

Feasibility studies are on-going with the main objective to define the baseline configuration for subsequent detailed design, development and operation programmes to be proposed and coordinated within the involved organisations.

Started in 2005 under the name of Post-EPS, in 2012 the design and development phases started under a new programme: EPS Second Generation (EPS-SG).


A number of instruments are being studied exploiting different techniques including multi spectral imaging, atmospheric sounding in the optical and microwave spectral domains, radio occultation sounding, scatterometry and microwave imaging.

Visible/Infrared Imaging (VII) (PDF, 184 KB)

Infrared Atmospheric Sounding (IAS) (PDF, 74 KB)

Microwave Sounding (MWS) (PDF, 738 KB)

Radio Occultation (RO) (PDF, 97 KB)

Nadir viewing UV/VIS/NIR — SWIR Sounding (UVNS) (PDF, 84 KB)

Multi-viewing, -channel, -polarisation Imaging (3MI) (PDF, 86 KB)

Scatterometry (SCA) (PDF, 192 KB)

Microwave Imaging (MWI) (PDF, 141 KB)

Ice Cloud Imaging (ICI) (Slide 11, PDF, 175 KB)

Data Collection System (DCS)

Services and Applications

Direct Broadcast

The raw instrument data will be broadcast in real time by the satellites, to be received by suitably equipped user stations during the relevant passes. The meteorological-satellite X-band (7750-7900 MHz) is being considered for this service; moving to this band from the L-band currently used by Metop is necessary due to the larger amount of data to be transmitted. A continuation of the broadcasting in L-band may be implemented for a subset of the instrument data.

Global Data Service

The instrument data will be provided to the users in near real time, after their acquisition and processing by the ground segment to obtain geometrically consistent and calibrated radiance values, and a number of geophysical variables with global coverage. The time between observation by the instrument and delivery of the data to the users will range between 60 and 120 minutes, mainly depending on geographical location of the observations. The delivery mechanisms will be based on an evolution of the current EUMETSAT systems such as EUMETCast.

Regional Data Service

The timeliness of selected data from observations over Europe and the North Atlantic will be shortened to 30 minutes. For the distribution of the data to the users the same mechanism of the Global Data Service will be used.

Archive and Retrieval

The instrument data will be archived and be available for retrieval via the internet together with the data of all other EUMETSAT satellite systems.

Study on Optimisation of Tracking Strategies for Radio Occultation

Study into providing an advanced simulation tool and dataset of simulated radio occultation measurements that represents a realistic and representative set of possible profiles.

Study on Optimisation of Tracking Strategies for Radio Occultation papers
Reference Title Version
EUM/CO/10/460000812/CJA Executive summary (PDF, 43 KB) v1.1
EUM/CO/10/460000812/CJA Task 1: ECMWF — The profile dataset (PDF, 5 MB) -
EUM/CO/10/460000812/CJA Task 2: Description of a Wave Propagator and radio occultation simulations (PDF, 7 MB) v2.2.4
EUM/CO/10/460000812/CJA Task 2: Wave Propagator User's Guide (PDF, 874 KB) v2.2.2
EUM/CO/10/460000812/CJA Task 2: RUAG — CSM and IRM Validation (PDF, 806 KB) v4
EUM/CO/10/460000812/CJA Task 2: RUAG — CSM and IRM User Manual (PDF, 615 KB) v4
EUM/CO/10/460000812/CJA Task 3b: RUAG — Coded Signal Simulations of 55 WOP Cases (PDF, 2 MB) v3
EUM/CO/10/460000812/CJA Task 4: Dataset verification (PDF, 3 MB) v1.4