EOS - 04
EOS-04 was launched successfully by ISRO's Polar Satellite Launch Vehicle(PSLV-C52), along with two co-passenger satellites at 05:59 hours IST on February 14, 2022
from Satish Dhawan Space Centre (SDSC), Sriharikota, Andhra Pradesh.

EOS-04 carrying a C-band Synthetic Aperture Radar (SAR )is a
follow-on mission to RISAT-1 launched in 2012. The satellite
has all weather, day and night imaging capability. It provides
continuity of C-band SAR data to the user community,
especially for agricultural applications. To meet the defined
mission objectives for a mission life of 5 years, various
components including payload, satellite orbit, in-orbit satellite
management and data handling on ground are well definedwith the following functionalities:
 Space segment comprising of three axis stabilized satellitewith SAR payload and mainframe subsystems.
 Datareception, Level-0 processing, data productgeneration and dissemination facilities with supporting
infrastructure on ground.
 Spacecraft control centre for tracking, commanding,satellite health analysis, orbit maintenance and schedulingof payload operations.
 Development of user-friendly value-added data products
and data archival.

Imaging Geometry

MajorApplications of EOS -04
 Agriculture Forestry and Plantations
 Flood Mapping Soil Moisture & Hydrology
 Change Detection and man-made structure delineation
 Oceanography

Salient Features of EOS - 04
Coarse Resolution
mode (12 beam)

SI.No

Parameters

MediumResolution
Mode(8-beam)

FineResolution
Mode (FRS-1)

.
1
2
3

Altitude (Km)
Inclination (Deg)
Repeativity (days)

4
5

Orbit period (minutes)

67

Swath (Km)Azimuth Resolution(metres)
Local Time (IST)HighResolution
Mode(Spot mode)

524.8797.5 °
139--160

25

1033

311717223
50

95

6:00 AM/PM (±10 min)

Acquisition Strategy• Descending Passes : Undisturbed
systematic coverage in MRS mode with 8beams everyday• Ascending Passes : All national andInternational user requests in all modes &MRS mode for archival build up

Payload Modes, Specifications
Imaging Mode

Swath in km

Off-nadir
Coverage in km

Polarization

Resolution(Azi. x Sl Rng.)

FRS-1

25

#20

100-650#100-4003m x 2m

FRS-2

25

#20

100-650#100-400

Single, Dual,Circular, Full

MRS (8-Beam)

160 #115

100-650#100-40033m x 8m

CRS

223 #168

100-650#100-400

50m x 8m*HRS

10100-650

3m x 4m

Single, Dual,Circular,

1m x 2m

FRS- Fine Resolution Stripmap; MRS - Medium Resolution ScanSAR; CRS Coarse Resolution ScanSAR; HRS- High Resolution Spotlight.
# represents specifications for full polarimetric mode. * Data products under evaluation.

Level of productsStandard Products / Format

Value Added Products

Level -0

Raw Signal Product(Generic Binary)

Level-1C

Geo-tagged Polarimetric products

Level-1• Slant Range Geo-Tagged Product(CEOS/GeoTiff)• Ground Range Products(CEOS/GeoTiff)

Level-3A

Geo-referenced Polarimetricproducts

Level-2
Geo ref

Enhanced Terrain corrected Geo
Referenced Product (GeoTiff)
Projection: UTM (Level-2)
Datum : WGS84 (Level-2)
Resampling : CC (Level-2)

Mosaic Products :India Mosaic (for systematic coverage)
Large Area Mosaic, Full Strip Mosaic

National Remote Sensing Centre
Indian Space Research Organisation
Dept. of Space, Govt. of India
Balanagar, Hyderabad – 500 037.
www.nrsc.gov.in data@nrsc.gov.in

Printed at PFD, SISG, NRSC, Hyderabad