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SDS -4 Session 2 Mission updates

Get the latest updates on the ALOS-2 mission, including launch and commissioning status. Find out about the mission objectives, acquisition strategy, data processing, and more.

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SDS -4 Session 2 Mission updates

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  1. ALOS-2 JAXAMasanobu Shimada SDS-4 Session 2Mission updates

  2. Mission <ALOS-2> Launch and commissioning • Status / launch date: • Satellite assembly in progress, PALSAR-2 on ground test, satellite-ground facility interface test, on-schedule. • Targeting Early 2014 launch • Commissioning Phase duration • Six months after the launch (initial mission check + Initial CALVAL) • Expected timing to enter operational status • 7th month after the launch • Expected life time • 7 years • Data policy (if known): not decided yet. • Any other info: 379 PIs for ALOS-2 research announcement

  3. Mission Objectives of <ALOS-2> Acquisition strategy • Disaster Monitoring • - quickaccess to damaged areas and continuous monitoring • - InSAR for deformation • Land Monitoring • - generate systematic archive • - sea ice monitoring • Agricultural Monitoring • - evaluation of irrigated ricefields • Natural Resource Exploration • - detecting oilslick over sea • - analysis of geology and topography • Global Forest Monitoring • - deforestation monitoring • Potential Use • - maritime safety

  4. Mission <ALOS-2> Acquisition strategy • Capacity to accommodate GFOI acquisition requests (in accordance with Baseline Strategy [Element-1] Implementation Plan) • Capacity to augment plan “on the fly” • Twice a year global coverage by 10m Dual (28MHz) Strip and more frequent ScanSAR (350km) Dual observations are mostly used for quick-monitoring. • Technical constraints (recorder capacity, downlink, etc.): • Availability of DRTS for one year after the launch • Continuous Downlinking using the Svalbird Ground station

  5. Mission <ALOS-2> Data processing • Processing levels : L1.1(SLC-IEEE), 1.5(geocoded amp, 16bit-amp), 2.1(Ortho-16bits-amp), 3.1(noise reduced) • Data formats: CEOS/GEOTIF • http://www.eorc.jaxa.jp/ALOS-2/en/doc/format.htm • Means for data distribution: • AUIG-2 based ordering and distribution, primary FTP down loading and exceptionally DVD distribution

  6. Specification Phase D ALOS-2 satellite ALOS-2in-orbit configuration Y X Z Data relay antenna Solar Arrays L-band SAR antenna X-band downlink antenna Experimental Compact InfraRedCamera (CIRC)SPace based Automatic Identification System Experiment(SPAISE2)

  7. Hatoyama (Back up) Svalvard (KSAT) (Back up) Katsuura JAXA SN (Tsukuba,Hatoyama) ALOS-2 Ground System ALOS-2 Data relay satellite USB（CMD,RNG） USB （CMD,RNG） USB （CMD,RNG） Ka（CMD,RNG） X（Mission） USB（TLM,RNG） X（Mission） USB（TLM,RNG） Ka（TLM,RNG） Ka（Mission） USB（TLM,RNG） X（Mission） X （Mission） Ground station of other organization JAXA GN CMD Antenna prediction CMD CMD Antenna prediction Antenna prediction Antenna prediction CMD Antenna prediction Trajectory information Mission data TLM Satellite Control& Mission Operation System USER Level 0/1data Information System (Tasking, Collection, Processing, Exploitationand Dissemination) Product Observation Request Trajectory information Observation Request Product Calibration coefficient ,Algorithm Trajectory information RNG Level 0/1data GPSdata Observation Request Data AnalysisSystem (Cal/Val, Algorithm development, Science) Flight Dynamics System Other Space Agency ：ALOS-2system ： Tracking network

  8. PALSAR-2 Specification SP : HH or VV or HV , DP : HH+HV or VV+VH , FP : HH+HV+VH+VV , CP : Compact pol (Experimental mode) Spotlight : Detail observation of damaged area Ultra Fine: High Resolution map (Japan area baseline) High sensitive: Flood / Coast monitoring Fine: Global observation(deformation/forest) ScanSAR nominal : ScanSAR InSAR(28MHz) ScanSAR wide: Ice monitoring, Ship detection

  9. Global Observation by ALOS series From experiences of the ALOS operation, a systematic observation strategy to achieve consistent data acquisitions in time and space was crucial

  10. Basic Observation Scenario(BOS) Systematic Observation strategies (Basic ObservationScenarios) have been developed andimplemented by JAXA for 20 years: • JERS-1 SAR (1995-1998: Pan-tropical, Pan-boreal) • ALOSPALSAR (2006-2011: Global) • ALOS-2PALSAR-2 (Under development.: Global)

  11. Basic Observation Scenario (Global) • Descending acquisitions (noon, ~12:00) • - To observe globally with Stripmap (3m) mode once per three years • - To observe Wetland and Forest with ScanSAR mode • To observe Deformation and Forest with successive two cycles for INSAR application • Ascending acquisitions (midnight, ~24:00) • - To observe globally with Stripmap (10m) mode twice a year • To observe polar region with ScanSAR mode more than twice a year to cover summer/winter times. Antarctica will be observed by left look to cover higher latitude. • To observe globally with Stripmap (6m Quad pol) mode once per four years • - To observe supersites with Stripmap (6m Quad pol) mode every year

  12. Basic Observation Scenario(BOS) The observation strategy of PALSAR-2 aims to provide spatially and temporally consistent, multi-seasonal global coverage, on a repetitive basis during the life-time of the ALOS-2 satellite. • Acquisition Concepts • Spatial and temporal consistency over continental scales at fine resolution • Adequate revisit frequency (including INSAR) • Accurate timing • Consistent sensor configuration • Long-term continuity • Goal • Comprehensive and homogeneous global archive of PALSAR-2 data

  13. Japan and global BOS • Japan BOS • To meet requirements from a large number of domestic organisations and user groups • Covering all Japan land and sea territory • Global BOS • Global observations over all land areas • at least semi-annual (dual-season) • at least dual-polarisation • Higher temporal repeat frequency for specific applications (e.g. crustal monitoring; volcanoes; agriculture; wetlands; deforestation hotspot regions; etc.)

  14. Basic Observation Scenario (Global) Global land areas – baseline mapping Temporal repeat: 2 cov/year GSD: 10 m Mode: Stripmap Dual-pol (HH+HV) Prio 1 Prio 2

  15. Basic Observation Scenario (Global) Global land areas – VHR mapping Temporal repeat: 1 cov/ 3 years GSD: 3 m Mode: Stripmap Single-pol (HH or HV) (TBD) Prio 1 Prio 2

  16. Basic Observation Scenario (Global) Global land areas – Quad polarimetry Temporal repeat: 1 cov/ 5 years GSD: 6 m Mode: Stripmap Quad-pol (HH+HV+VV+VH)

  17. Basic Observation Scenario (Global) Forest monitoring Temporal repeat: 2-6 cov/year (tropics 6 cov) GSD: 10 m Mode: StripmapDual-pol (HH+HV)

  18. Basic Observation Scenario (Global) Wetlands & Rapid deforestation monitoring Temporal repeat: 9 cov/year GSD: 100 m Mode: ScanSAR 350km Dual-pol(HH+HV)

  19. Basic Observation Scenario (Global) Crustal Deformation Temporal repeat: 2-6 cov/year & 9 cov/year GSD: 10 m& 100 m Mode: Stripmap Dual-pol (HH+HV) &ScanSAR 350km (HH+HV)

  20. Basic Observation Scenario (Global) Polar Ice Temporal repeat: 3 cov/year GSD: 100 m Mode: ScanSAR (HH or HH+HV) (TBD) Right look Left look

  21. Basic Observation Scenario (Global) Observation pattern for annual acquisitions * 10m DP (HH+HV) 6m QP (HH+HV+VV+VH) 3m SP (HH or HV) 100m WB (HH+HV) 100m WB (HH+HV) 100m WB HH+HV 350km (Right) 490 km (Right) 490km (Left) * 3m SP and 6m QP modes require 3 and 4 years for global coverage

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