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Japanese Earth Resources Satellite "FUYO-1" (JERS-1)

Launch Date

End of Operation

Altitude

Weight

Revisit Time

Antenna Size

Wavelength

Resolution

Off-nadir Angle

Scan Width

February 11, 1992

October 12, 1998

Approx. 570 km

Approx. 1.4 t

44 days

12 m x 2.2 m

L-band (23.5 cm)

18 m

35 degrees

75 km

JERS-1 was launched jointly by NASDA (at that time) and MITI (at that time) with the primary objective of gathering data on resource surveying. In addition to SAR, JERS-1 was equipped with two types of optical sensors.

Advanced Land Observing Satellite "Daichi" (ALOS)

Launch Date

End of Operation

Altitude

Weight

Revisit Time

Antenna Size

Wavelength

Resolution

Off-nadir Angle

Scan Width

January 24, 2006

May 12, 2011

Approx. 690 km

Approx. 4 t

46 days

8.9 m x 3.1 m

L-band (23.6 cm)

7 - 44 m

8 - 60 degrees

40 - 70 km

ALOS was launched by JAXA with the primary objective of gathering data on mapping, disaster monitoring, and resource surveying. ALOS was one of the largest earth observation satellites in the world, which is used for precise land coverage observation.

Advanced Land Observing Satellite-2 "Daichi-2" (ALOS-2)

Launch Date

Designed Lifetime

 

Altitude

Weight

Revisit Time

Antenna Size

Wavelength

 

Resolution

Off-nadir Angle

Scan Width

May 24, 2014

5 years
(Target: 7 years)

Approx. 630 km

Approx. 2 t

14 days

10 m x 3 m

L-band
(23.3 - 24.2 cm)

1 - 100 m

8 - 70 degrees

25 - 490 km

ALOS-2 was launched by JAXA as a successor to ALOS. ALOS-2 has higher resolution, wider observable area and better data transfer capacity than ALOS. ALOS-2 will greatly contribute to the efficient management of land and environment conservation.

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