|Mission type||Remote sensing|
|Mission duration||7 years, 28 days (elapsed)|
|Spacecraft type||Advanced Land Observing Satellite|
|Launch mass||2,120 kg (4,670 lb)|
|Start of mission|
|Launch date||24 May 2014, 03:05:14 UTC |
|Launch site||Tanegashima, Yoshinobu 1|
|Contractor||Mistubishi Heavy Industries|
|Reference system||Geocentric orbit |
|Perigee altitude||636 km (395 mi)|
|Apogee altitude||639 km (397 mi)|
Advanced Land Observing Satellite-2 (ALOS-2), also called Daichi-2, is a 2120 kg Japanese satellite launched in 2014. Although the predecessor ALOS satellite had featured 2 optical cameras in addition to 1.2 GHz (L-band) radar, ALOS-2 had optical cameras removed to simplify construction and reduce costs. The PALSAR-2 radar is a significant upgrade of the PALSAR radar, allowing higher-resolution (1 x 3 m per pixel) spotlight modes in addition to the 10 m resolution survey mode inherited from the ALOS spacecraft. Also, the SPAISE2 automatic ship identification system and the Compact Infra Red Camera (CIRC) will provide supplementary data about sea-going ships and provide early warnings of missile launches.
The satellite contains a 1.2 GHz synthetic-aperture radar (SAR) sensor that is intended to be used for cartography, monitoring of naval traffic and disaster monitoring of Asia and the Pacific. JAXA initially hoped to be able to launch the successor to ALOS during 2011, but these plans were delayed until 2014 because of budget restrictions.