EO1 Science Validation Evolution

1
EO-1 Science Validation Evolution

• Initial Concept
• ALI including MS/PAN, the WIS, and the GIS
• AC
• De-scope
• ALI (MS/PAN)
• AC
• Re-scope
• ALI (MS/PAN)
• Hyperion (GIS)
• AC

2
Initial Concept

• Validate MS/PAN and WIS for Landsat-follow-on and
  other future Mission To Planet Earth (MTPE)
  missions
• Validate new ways of doing business visa-vi
  formation flying and calibration
• Use GIS to evaluate spectral purity of WIS
• Assess impact of applying AC-generated
  atmospheric corrections to contemporaneously
  obtained (within 1 minute) Landsat 7 ETM data

3
Descope

• Validate MS/PAN for Landsat-follow-on and other
  future MTPE missions
• Validate new ways of doing business visa-vi
  formation flying and calibration
• Assess impact of applying AC-generated
  atmospheric corrections to contemporaneously
  obtained (within 1 minute) Landsat 7 ETM data

4
Rescope

• Validate MS/PAN and Hyperion for
  Landsat-follow-on and other future MTPE missions
• Validate new ways of doing business visa-vi
  formation flying and calibration
• Evaluate utility of hyperspectral data for
  meeting needs of Earth Science Enterprises (ESE)
  community by addressing Lewis science mission
  objectives with Hyperion
• Assess impact of AC-generated atmospheric
  corrections on Landsat 7 ETM data

5
EO-1 Coordinated Image Collection Opportunities
Excludes thermal channel
6
ALI Flight Validation

• The ALI is a specific response to the Land Remote
  Sensing Policy Act wherein NASA is charged with
  ensuring Landsat data continuity through the use
  of advanced technology
• EO-1 will provide at least 200 paired scene
  comparisons with Landsat 7
• EO-1 flies within 1 minute of Landsat over the
  same ground track 3 km
• Provision to collect up to 1,000 paired scenes
• Continuous atmospheric correction available
• Paired scene comparisons evaluated by experienced
  land imaging scientists in association with the
  Landsat Science Working Group

7
Hyperion Flight Validation

• The Hyperion is a specific response to address
  the science and technology goals of the
  ill-fated Lewis mission
• EO-1 will provide 7.5 km x 19.8 km x 220 band of
  spectral imaging data hyper-cubes
• Hyperion is co-aligned with the innermost MS/Pan
  SCA on the ALI MS/Pan Module
• Provision to collect up to 6,000 hyper-cubes with
  matching ALI MS/Pan and selected Landsat 7 data
• Continuous atmospheric correction available
• Paired scene comparisons evaluated by experienced
  land imaging scientists in association with the
  Landsat and AM-1 Science Working Groups

8
EO-1 Mission Overview

• Primary Participants
• Mission Components
• ALI (MS/Pan) NASA Research Announcement (NRA)
  Investigators
• Hyperion NRA, DOD, commercial
• Atmospheric Corrector NRA, L-7, commercial
• Technologies IPDT
• Mission Phases
• Launch to L2 months Spacecraft Team, MIT/LL,
  TRW
• L 2 to L12 months NRA
• Extended Operations (not funded) DoD, Commercial

9
Science Validation Activities

• Validate the ability of the ALI to produce
  calibrated multispectral images of the Earths
  surface.
• Evaluate Hyperion imaging spectrometer system
  performance for representative operating
  conditions and target environments.
• Determine the potential for improving land
  surface identification by applying AC atmospheric
  water vapor corrections to Landsat-7 ETM
  observations.

10
Hyperion System Performance

• Evaluate sensor characteristics for calibration,
  repeatability and impact of atmospheric
  conditions
• Cross correlate with other EO-1 instruments and
  ETM
• Investigate utility of high spectral and spatial
  Hyperion data in enhancing data from EOS/AM-1
  instruments
• Demonstrate the applications of space-based
  imaging spectroscopy in landcover use and change
  analysis for both land mass and coastal regions

11
Sensor Performance Validation Topics

• Cross-calibration with other EOS instruments
  (e.g., MODIS, ETM)
• Characterize and analyze radiometric calibration
• Efficacy of different calibration modes during
  the first year of orbit
• Compare results of well characterized sites on
  Earth (vicarious calibration) with known or
  stable reflectance characteristics and
  well-determined atmospheric states
• Derive ETM equivalent integrated spectral
  reflectance (band radiances) from the
  hyperspectral instrument and compare against
  Landsat spectral reflectance of ETM
• Algorithm intercomparison studies
• Theoretical measurement accuracy and validation
  measurements
• Multiple or time series satellite algorithm
  development
• Uncertainty analysis using basic physical and
  system equations
• Physical process measurement validation
• Landsat precursor operational satellite sensor
  validation

12
Sensor Performance Validation Topics(Continued)

• Development of advanced physical-statistical
  validation methodology
• Model impact analysis of remote sensing
  measurement errors
• Establishment of statistical criteria for
  accuracy with multiple satellite sensors, orbits,
  observation times, and spectral coverages
• Removal of satellite data artifacts and
  post-observation recalibration
• Real-time calculation of direct broadcast data
  products and uncertainties
• Alignment of detector/array alignment studies
• Modulation transfer function (MTF) changes over
  time
• Solar diffuser stability
• Measure statistical response of MS/Pan and AC
  vs.. Landsat-7 ETM
• Intersatellite calibration

13
Hyperion Science Application Topics

• Produce Landsat-type products, e.g., spectral
  vegetation indices, closed/sparse canopy,
  thematic maps (urban studies), snow and land
  cover/land use change, land surface temperature
  (day/night), fire, thermal anomalies and burn
  scars
• Assess the capability of MS/Pan to meet the needs
  of Landsat user community
• Assess capabilities of MS/Pan and hyperspectral
  over the growing season to evaluate seasonal
  variations
• Extract biophysical properties, e.g., fraction
  absorbed photosynthetically-active radiation
  (FPAR), leaf area index (LAI), and net primary
  production (NPP)
• Study bi-directional reflectance distribution
  function (BRDF) and surface reflectance products
• Determine surface spectral bi-directional
  reflectance corrected for atmosphere
• Conduct regional field studies, field data
  campaigns

14
Mission Planning Overview

• Coordinating Committee
• Representatives from Science Working Group,
  Commercial Sector and Department of Defense
• Adjudicates acquisition policy/priorities
• Mission Planning Office
• Implements mission planning activities
• Serves as sole acquisition input to the FOT
• Staffed by Mission Science Planning Office

15
Data Processing / Distribution

• Science Validation Facility
• Distributes all level-0 data to selected NRA
  Science Validation investigators
• Produces MS/Pan Cal Pipeline data on demand
• Provides in-house validation/analysis capability
• NASA Stennis
• Provides all Hyperion processing
• Distributes Hyperion Level-0 data to all
  Commercial and DOD interests
• Distributes processed Hyperion data to SVF, as
  well as Commercial and DOD interests

16
Backup Slides
17
SAC-C Science Synergy

• December launch accommodates inclusion of Swedish
  Magnetometer Mapping Payload
• EO-1 and SAC-C will cooperate as follows to
  promote NASA/Argentine research initiative
• Collaborative research opportunities in remote
  sensing applications involving land use,
  atmospheric composition, and wet land habitats
• Cooperative surface measurement program in
  Argentina, including the installation of Aeronet
  photometer stations for continuous monitoring of
  atmospheric aerosols
• NASA to provide Landsat 7 / EO-1 land imaging in
  support of the above tasks
• Argentine participation in the EO-1 NRA

18
Hyperion Performance Model Predictions (30
Reflectance, 60 Solar Zenith Angle)
19
Science Validation Facility (SVF)

• Serves as the EO-1 Mission Science Office (MSO)
  validation analysis and investigator distribution
  center
• Physically part of the GSFC Landsat-7 Project
  Science Office (LSPO) Image Assessment System
  (IAS)
• Specifically will provide data distribution and
  ALI level 1 processing to NRA science
  investigators