NEC s EO Sensors and Data Applications

NEC s EO Sensors and Data Applications Second Singapore Space Symposium 30 September, 2015 Nanyang Technological University, Singapore Shimpei Kondo Space Technologies Department, Space System Division, NEC Corporation 1 NEC Corporation 2015

Outline NEC s Earth Observation (EO) Sensor Line-Up and Applications-Overview Examples of EO Sensors TANSO (Thermal And Near-infrared Sensor for carbon Observation) HISUI (Hyper-spectral Imager SUIte) Data Applications Usages of TANSO data Usages of Multi & Hyper-Spectral Images Summary and Future Vision 3 NEC Corporation 2015

4 NEC Corporation 2015 NEC s EO Sensor Line-Up and Applications-Overview

NEC s EO Sensor Line-Up -Overview Wide Variety of Mission Devices and Observation Sensors NEC has been involved in the development of a wide variety of optical sensors. 1987 1992 1996 1998 2002 2005 2010~ OPTICAL OPS (JERS-1) Optical Sensors ASTER (EOS-Terra) Advanced Spaceborne Thermal Emission and Reflection Radiometer PRISM (ALOS) Panchromatic Remote Sensing Instrument for Stereo Mapping OPS(ASNARO) Optical Sensor HISUI Hyper-spectral Imager SUIte MESSR (MOS-1) Multispectral Electronic Self Scanning Radiometer OCTS (ADEOS) Ocean Color and Temperature Scanner OCI (ROCSAT-1) Ocean Color Imager TANSO (GOSAT) Thermal And Near infrared Sensor for carbon Observation SGLI (GCOM) Second Generation Global Imager 5 NEC Corporation 2015

Sensor Line-Up and Applications Sensor Type Fourier Transform Spectrometer (FTS) Gas monitoring Typical Application Low High Hyper-Spectral Sensor Multi-Spectral Sensor Environmental Monitoring Agriculture & Forestry Resource Exploration Natural Resource Management Geological Mapping (mining, resource exploration) Maritime Operations Disaster Management (crisis mapping) Environment Monitoring (global land/ocean monitoring) Spatial resolution Spectral resolution High-Resolution Optical Imager Infrastructure monitoring (in urban areas) Location-based Services High Low 6 NEC Corporation 2015

7 NEC Corporation 2015 Examples of EO Sensors

Sensor Line-Up and Applications Sensor Type Fourier Transform Spectrometer (FTS) Gas monitoring Typical Application Low High Hyper-Spectral Imager Multi-Spectral Imager Environmental Monitoring Agriculture & Forestry Resource Exploration Natural Resource Management Geological Mapping (mining, resource exploration) Maritime Operations Disaster Management (crisis mapping) Environment Monitoring (global land/ocean monitoring) Spatial resolution Spectral resolution High-Resolution Optical Imager Infrastructure monitoring (in urban areas) Location-based Services High Low 8 NEC Corporation 2015

GOSAT/TANSO (2009- ) TANSO (Thermal And Near-infrared Sensor for carbon Observation) TANSO JAXA TANSO-FTS: Fourier Transform Spectrometer 9 NEC Corporation 2015 GOSAT JAXA TANSO-CAI: Cloud and Aerosol Imager JAXA GOSAT: Greenhouse gasses Observing SATellite Mission Global Monitoring of Greenhouse Gasses (CO2, CH4, ) Performance(TANSO-FTS) Spectral Resolution : 0.2 cm-1 (~0.01 μm @0.76 μm) Instantaneous FOV : Φ10.5 km (nadir) Wavelength: SWIR (0.76~0.77 μm, 1.6~1.7 μm, 1.9~2.1 μm) TIR (5.6~14.3 μm) Pointing Angle : ± 35 deg. (Cross Track) ± 20 deg. (Along Track) Performance(TANSO-CAI) Scanning Method: Push Bloom with SiCCD and InGaAs PD Array Spatial resolution and Wavelength : 0.5 km (380 nm, 674 nm, 870 nm) 1.5 km (1.6 μm) Swath : 1000 km (380 nm, 674 nm, 870 nm) 750 km (1.6 μm) Launch Date 2009.1

Sensor Line-Up and Applications Sensor Type Fourier Transform Spectrometer (FTS) Gas monitoring Typical Application Low High Hyper-Spectral Sensor Multi-Spectral Sensor Environmental Monitoring Agriculture & Forestry Resource Exploration Natural Resource Management Geological Mapping (mining, resource exploration) Maritime Operations Disaster Management (crisis mapping) Environment Monitoring (global land/ocean monitoring) Spatial resolution Spectral resolution High-Resolution Optical Imager Infrastructure monitoring (in urban areas) Location-based Services High Low 10 NEC Corporation 2015

HISUI HISUI (Hyper-Spectral Imager SUIte) Hyper-Spectral Sensor Multi-Spectral Sensor J-Spacesystems Mission Global measurement of hyper-spectral Sensor to identify minerals, vegetation, environments, etc. Performance Spatial resolution: 30 m @618.2km Observation width: 30 km @618.2km Number of bands: 185 ( VNIR 57 / SWIR 128 ) Wavelength: VNIR 0.4-0.97 μm SWIR 0.9-2.5 μm SNR: 450 @620nm 300 @2100nm Spectral resolution: VNIR 10 nm SWIR 12.5 nm Mission Global Sensor with multi (4) channels Performance Spatial resolution: 5 m @618.2km Observation width: 90 km @618.2km Number of bands: 4 Wavelength: 0.45-0.9 μm 11 NEC Corporation 2015 J-Spacesystems

12 NEC Corporation 2015 Data Applications

Data Application(GOSAT/TANSO) 1/2 Intensity Optical Path Difference [cm] Interferogram acquired by TANSO-FTS FFT CO 2 CH 4 Intensity Absorption bands Swath width of CAI False Color Image acquired by TANSO-CAI :Footprint of TANSO-FTS JAXA/NIES/MOE Wavelength [µm] CO2 amount higher absorption deeper Spectrum converted from Interferogram 13 NEC Corporation 2015

Data Application(GOSAT/TANSO) 2/2 XCO2 Global Distribution 2009/04-2010/09 derived by TANSO-FTS JAXA/NIES/MOE Features: Wide spectrum range Extremely high spectral resolution Global and high frequently observation High accuracy of observing CO 2 ( < 2ppm) By-product of TANSO data analysis It is useful for survey of volcano condition (before the explosion: CO 2 after the explosion: SO 2 ) 14 NEC Corporation 2015

Data Application(Hyper-Spectral Sensor) 1/4 Image data is collected in each wavelength region. Blue Red Normal color image Hyper-spectral image dozens or hundreds of images Spectrum shape depends on what the sensor observes. Reflectance Spectrum 3 colors (R, G, B) Wavelength 15 NEC Corporation 2015

Data Application(Hyper-Spectral Sensor) 2/4 Data Application (Agriculture) Some of plants have particular absorption spectrum on the range of 500-750nm wavelength. This characteristic feature can be used for the classification of wheat crop. J-Spacesystems J-Spacesystems 16 NEC Corporation 2015

Data Application(Hyper-Spectral Sensor) 3/4 Data Application (Agriculture) Estimation result of wheat crop distribution is below. (Left: collected by airborne hyper-spectral radiometer. Right: confirmed by field survey.) HISUI data is expected to have same potential applications. Moreover, observation width is wider than that of airborne hyper-spectral radiometer. (30 km @618.2km) So, global monitoring and large amount of data collection can be realized. 17 NEC Corporation 2015 Airborne data Field survey data J-Spacesystems

Data Application(Hyper-Spectral Sensor) 4/4 Data Application (Minerals exploration) Data Application of Hyper-Spectral Sensor can be attached for the Minerals exploration. Goethite Limonite Jarosite Sericite Illite Smectite Original image J-Spacesystems Kaolinite Chlorite Calcite Alunite Minerals successfully identified in the study area J-Spacesystems 18 NEC Corporation 2015

Summary and Future Vision NEC has been involved in the development of a wide variety of optical sensors since Japanese 1st Earth observation satellite launched in 1987. NEC space technology can be applied to various fields such as agriculture, environment monitoring, disaster prevention, resource exploitation and security assurance, etc. In addition, we will be able to provide a high-scarcity-value solution by orchestrating enormous data from sensors with ICT such as Big Data. NEC will contribute to the prosperity and safety in Asian region, taking our technologies and experiences through enormous space heritage. 19 NEC Corporation 2015

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