ALOS-2

Japanese satellite launched in 2014

Advanced Land Observing Satellite-2
Spacecraft properties
H-IIA Launch Vehicle Flight 24, launching the Advanced Land Observing Satellite-2 "Daichi-2".
Names	Daichi-2

Mission type	Remote sensing
Operator	JAXA
COSPAR ID	2014-029A
SATCAT no.	39766
Website	www.jaxa.jp/projects/sat/alos2/index_j.html
Mission duration	10 years, 4 days (elapsed)


Spacecraft type	Advanced Land Observing Satellite
Bus	ALOS
Launch mass	2,120 kg (4,670 lb)


Start of mission
Launch date	24 May 2014, 03:05:14 UTC^[1]
Rocket	H-IIA 202
Launch site	Tanegashima, Yoshinobu 1
Contractor	Mitsubishi Heavy Industries


Orbital parameters
Reference system	Geocentric orbit^[2]
Regime	Sun-synchronous orbit
Perigee altitude	636 km (395 mi)
Apogee altitude	639 km (397 mi)
Inclination	97.92°
Period	97.33 minutes

Advanced Land Observation Satellite ← ALOS ALOS-3 →

Advanced Land Observing Satellite-2 (ALOS-2), also called Daichi-2, is a 2,120 kg (4,670 lb) Japanese satellite launched in 2014. Although the predecessor ALOS satellite had featured 2 optical cameras in addition to L-band (1.2 GHz/25 cm) 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.^[3]

Launch

ALOS-2 was launched from Tanegashima, Japan, on 24 May 2014 by a H-IIA rocket.^[4]

Mission

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.^[3] 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.

References

^ McDowell, Jonathan. "Launch Log". Jonathan's Space Report. Retrieved 16 November 2014.
^ "ALOS 2 Satellite details 2014-029A NORAD 39766". N2YO. 25 January 2015. Retrieved 25 January 2015.
^ ^a ^b "Satellite Missions Catalogue: ALOS-2 (Advanced Land Observing Satellite-2) / Daichi-2". eoPortal.org. 29 May 2012. Retrieved 11 December 2022.
^ "Japanese craft launched with night-vision mapping radar", Spaceflight Now, Retrieved on 31 May 2014

External links

Official website
ALOS-2 brochure
Advanced Land Observing Satellite-2 "ALOS-2" (DAICHI-2)　Gazing into Earth's Expression on YouTube by JAXA
You can understand DAICHI-2 applications for disaster on YouTube by JAXA
Eoportal ALOS-2 page

Japanese space program

Italics indicates projects in development.
Symbol ^† indicates failed projects.
~~Strikethrough lines~~ indicate cancelled projects.

Space agencies

National space agencies	JAXA former ISAS NAL NASDA NICT JSS
Joint development partners	NASA¹ ESA² ASI³ CSA⁴ Roscosmos⁵ AEB⁶ INPE⁷ ISRO⁸

Astronomical observation

Past	Akari ASCA ASTRO-E^† ~~Astro-G~~ CORSA^† Ginga Hakucho HALCA Hinotori Hitomi^† ~~SPICA~~ Suzaku Tenma Yohkoh
Active	Hinode Hisaki XRISM¹
Future	ATHENA² SOLAR-C¹ GREX-PLUS [ja] HiZ-GUNDAM [ja] LAPYUTA LiteBIRD Nancy Grace Roman Space Telescope¹ Nano-JASMINE Small-JASMINE

Communications satellites, broadcasting satellites and satellite navigation systems

Past	BS 2X 3H 3N Kakehashi Kirari Kizuna Kodama MBSat N-STAR a b Sakura (1 2a 2b 3a 3b) Yuri 1 2a 2b 3a 3b
Active	Kirameki 1 2 Michibiki 1 2 3 4 1R MTSAT N-STAR c d JDRS
Future	DSN 3 QZS 5 6 7

Earth observation

Past	Akebono Daichi 1 3^† Denpa Fuyo-1 Jikiken Kyokko Midori I II Momo 1 1b Ohozora Taiyo TRMM¹ Ume 1 b Geotail¹
Active	Aqua^1,7 Arase ASNARO 1 2 Daichi-2 GPM¹ Himawari Ibuki original 2 Shikisai Shizuku
Future	ALOS-4 EarthCARE² GOSAT-GW PMM

Engineering tests

Past	Ayame 1 2 DASH EXPRESS IKAROS Jindai Kiku 1 2 3 4 5 6 7 8 LDREX 1 2 LRE Micro LabSat-1 Myojo Ohsumi Orizuru RAISE 2 3^† ~~PETSAT~~ RAPIS-1 Ryusei SERVIS-1 SERVIS-2 SDS-1 SFU Shinsei ~~SmartSat-1~~ Tansei 1 2 3 4 Tasuki Tsubame Tsubasa USERS
Active	Ajisai Reimei SDS-4
Future	BEAK ETS-IX G-SATELLITE SERVIS-3

Human spaceflight

Past	~~Fuji crewed spacecraft~~ ~~HOPE-X~~ H-II Transfer Vehicle
Active	International Space Station (ISS) & Japanese Experiment Module (Kibō)^1,2,3,4,5,6
Future	HTV-X Japanese Space Station Module (Mitsui) Lunar Gateway^1,2,4

Space probes

The Moon

Past	Hakuto-R Mission 1^† Hiten ~~Lunar-A~~ Kaguya (SELENE) OMOTENASHI^† ~~SELENE-2~~
Active	EQUULEUS Smart Lander for Investigating Moon (SLIM)
Future	Hakuto-R Mission 2 HERACLES^2,4 Lunar Cruiser Lunar Polar Exploration Mission⁸ (LUPEX) Yaoki

Others

Past	Hayabusa ~~Hayabusa Mk2~~ Nozomi^† PROCYON^† Sakigake Shin'en^† Suisei
Active	Akatsuki BepiColombo (MMO/Mio)² Hayabusa2 Jupiter Icy Moons Explorer²
Future	Comet Interceptor² DESTINY+ Dragonfly¹ Hera² MELOS Martian Moons eXploration Next Generation Small-Body Sample Return TEREX

Reconnaissance satellites

Past	IGS-Optical 1 2 Experimentally 3 IGS-Radar 1 2
Active	IGS-Optical 3 4 5 6 Experimentally 5 IGS-Radar 3 4 Spare 5 6
Future	IGS-Optical 7 8 IGS-Radar 7 8

Private small satellites

Past	CosMoz CUTE 1.7+APD Fuji 1 2 Hayato HIBARI HIT-SAT Kagayaki Kanta-kun (WEOS) Kūkai Maido-1 Negai☆″ Niwaka RAIKO Waseda-SAT2 WE WISH
Active	CUTE 1 1.7+APDII Fuji-3 Hitomi Hodoyoshi 1 2 3 4 Horyu 2 Kiseki PROITERES Raijin Raijin-2 SEEDS SOCRATES XI IV V
Future	DRUMS KITSUNE OPUSAT-II QSAT-EOS RSP-01 SOMESAT SpaceTuna1 SPROUT TSUBAME WNI satellite

v t e ← 2013 Orbital launches in 2014 2015 →
January	GSAT-14 Thaicom 6 CRS Orb-1 (Flock-1 × 28, ArduSat-2, Lituanica SAT-1, LitSat-1, SkyCube, UAPSat-1) TDRS-L
February	Progress M-22M ABS-2, Athena-Fidus Türksat 4A USA-248 GPM Core, Ginrei, KSAT-2, INVADER, OPUSAT, STARS-II, TeikyoSat-3, ITF-1
March	Ekspress AT1, Ekspress AT2 Astra 5B, Amazonas 4A Kosmos 2494 Soyuz TMA-12M Shijian XI-06
April	USA-249 / DMSP-5D3 F19 Sentinel-1A IRNSS-1B Progress M-23M Ofek-10 USA-250 EgyptSat 2 SpaceX CRS-3 (KickSat) Luch 5V, KazSat-3
May	Kosmos 2495 Ekspress AM4R USA-251 USA-252 Kosmos 2496, Kosmos 2497, Kosmos 2498, Kosmos 2499 ALOS-2, Raijin-2, UNIFORM-1, SOCRATES, SPROUT Eutelsat 3B Soyuz TMA-13M
June	Kosmos 2500 / GLONASS-M 755 AprizeSat 9, AprizeSat 10, BRITE-Montreal, BRITE-Toronto, BugSat 1, Deimos-2, Hodoyoshi 3, Hodoyoshi 4, KazEOSat 2, Perseus-M1, Perseus-M2, SaudiSat-4, TabletSat-Aurora, UniSat-6 (Lemur-1, Tigrisat), Flock-1c × 11 SPOT 7, CanX-4, CanX-5
July	OCO-2 Gonets-M × 3 Meteor-M No.2 O3b × 4 CRS Orb-2 (Flock-1b × 28, TechEdSat-4) Orbcomm-OG2 × 6 Foton-M No.4 Progress M-24M USA-253 / GSSAP 1, USA-254 / GSSAP 2, USA-255 / ANGELS Georges Lemaître ATV
August	USA-256 AsiaSat 8 Yaogan 20 A, B, C WorldView-3 Gaofen 2, Heweliusz Galileo FOC-1, Galileo FOC-2
September	Chuangxin 1-04, Lingqiao AsiaSat 6 Yaogan 21, Tiantuo 2 MEASAT 3b, Optus 10 USA-257 SpaceX CRS-4 Soyuz TMA-14M Olimp-K Shijian XI-07
October	Himawari 8 IRNSS-1C ARSAT-1, Intelsat 30 Yaogan 22 Ekspress AM6 Chang'e 5-T1, 4M Shijian 11-08 Cygnus CRS Orb-3† (Arkyd-3†, Flock-1d × 26†) Progress M-25M USA-258 / GPS IIF 8 Meridian 7
November	Sasuke, Hodoyoshi 1, Kinshachi 1, Tsukushi, TSUBAME Yaogan 23 Yaogan 24 Kuaizhou 2 Soyuz TMA-15M Kosmos 2501
December	Hayabusa2, PROCYON, Shinen 2, DESPATCH Orion EFT-1 DirecTV-14, GSAT-16 CBERS-4 Yaogan 25 A, B, C USA-259 Yamal-401 O3b × 4 (FM9 to FM12) Kondor-E No.2 IPM Kosmos 2502 Resurs-P No.2 Yaogan 26 Astra 2G Fengyun 2-08
Launches are separated by dots ( • ), payloads by commas ( , ), multiple names for the same satellite by slashes ( / ). Crewed flights are underlined. Launch failures are marked with the † sign. Payloads deployed from other spacecraft are (enclosed in parentheses).