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Co-Authors
- Arup Roy Chowdhury
- Arup Banerjee
- S. R. Joshi
- Moumita Dutta
- Ankush Kumar
- Satadru Bhattacharya
- Amitabh
- Sami Ur Rehman
- Sunil Bhati
- J. C. Karelia
- Amiya Biswas
- Anish R. Saxena
- Satish Sharma
- Sandip R. Somani
- H. V. Bhagat
- Jitendra Sharma
- D. N. Ghonia
- Ajay Parasar
- Vishnukumar D. Patel
- A. S. Arya
- Sukamal Paul
- Dhrupesh Shah
- Pradeep Soni
- Minal Sampat
- Sandip Somani
- K. Suresh
- R. P. Rajasekhar
- Mukesh Kumar
Journals
Year
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z All
Bokarwadia, B. B.
- Imaging Infrared Spectrometer onboard Chandrayaan-2 Orbiter
Abstract Views :264 |
PDF Views:95
Authors
Arup Roy Chowdhury
1,
Arup Banerjee
1,
S. R. Joshi
1,
Moumita Dutta
1,
Ankush Kumar
1,
Satadru Bhattacharya
1,
Amitabh
1,
Sami Ur Rehman
1,
Sunil Bhati
1,
J. C. Karelia
1,
Amiya Biswas
1,
Anish R. Saxena
1,
Satish Sharma
1,
Sandip R. Somani
1,
H. V. Bhagat
1,
Jitendra Sharma
1,
D. N. Ghonia
1,
B. B. Bokarwadia
1,
Ajay Parasar
1
Affiliations
1 Space Applications Centre, Indian Space Research Organisation, Ahmedabad 380 015, IN
1 Space Applications Centre, Indian Space Research Organisation, Ahmedabad 380 015, IN
Source
Current Science, Vol 118, No 3 (2020), Pagination: 368-375Abstract
Imaging Infrared Spectrometer (IIRS) is an imaging hyperspectral instrument for mineralogy of the lunar surface (including the hydroxyl signature). IIRS operates in the 0.8–5 μm spectral range with about 250 contiguous bands. It has 80 m ground sampling distance and 20 km swath at nadir from 100 km orbit altitude. Optical design is based on fore-optics and Offner (convex multi-blazed grating)-type spectrometer. Focal plane array is HgCdTe (mercury–cadmium–telluride)- based actively cooled to 90 K, having 500 × 256 pixels format with 30 μm pixel size. Electronics comprises proximity, logic and control, power supply and cooler drive electronics. Mechanical system is realized to house various subsystems, namely optics, detector, electronics and thermal components meeting the structural, opto-mechanical thermal component and alignment requirements. Thermal system is designed such that the instrument is cooled and maintained at fixed temperature to reduce and control instrument background. Aluminum-based mirror, grating and housing are developed to maintain structural as well as opto-mechanical and thermal requirements. This article presents IIRS realization and spectroradoimetric performance.Keywords
Hyperspectral Imaging, Infrared Spectrometer, Moon, Orbiter.Full Text
References
- Banerjee, A. et al., SW–MW infrared spectrometer for lunar mission. In Proceedings of SPIE 9880, Multispectral, Hyperspectral, and Ultraspectral Remote Sensing Techniques and Applications VI, 98801F, 30 April 2016; doi:10.1117/12.2228225.
- Kiran Kumar, A. S. et al., Hyper Spectral Imager for lunar mineral mapping in visible and near infrared band. Curr. Sci., 2009, 96(4), 496–499.
- Pieters, C. M. et al., The Moon mineralogy mapper (M3) on Chandrayaan-1. Curr. Sci., 2009, 96(4), 500–505.
- Mall, U. et al., Near Infrared Spectrometer SIR-2 on Chandrayaan1. Curr. Sci., 2009, 96(4), 506–511.
- Pieters, C. M. et al., Character and spatial distribution of OH/H2O on the surface of the Moon seen by M3 on Chandrayaan-1. Science, 2009, 326, 568–572.
- Clark, R. N., Detection of adsorbed water and hydroxyl on the Moon. Science, 2009, 326, 562–564.
- Sunshine, J. M. et al., Temporal and spatial variability of lunar hydration as observed by the deep impact spacecraft. Science, 2009, 326, 565–568.
- Klima, R. et al., Remote detection of magmatic water in Bullialdus Crater on the Moon. Nature Geosci., 2013, 6, 737–741.
- Bhattacharya, S. et al., Endogenic water on the Moon associated with non-mare silicic volcanism: implications for hydrated lunar interior. Curr. Sci., 2013, 105, 685–691.
- Bhattacharya, S. et al., Detection of hydroxyl-bearing exposures of possible magmatic origin on the central peak of crater Theophilus using Chandrayaan-1 Moon Mineralogy Mapper (M3) data. Icarus, 2015, 260, 167–173.
- Li, S. et al., Water on the surface of the Moon as seen by the Moon Mineralogy Mapper: distribution, abundance and origins. Sci. Adv., 2017, 3, e1701471.
- Milliken, R. E. and Li, S., Remote detection of widespread indigenous water in lunarpyroclastic deposits. Nature Geosci., 2017, 10, 561–565.
- Terrain Mapping Camera-2 onboard Chandrayaan-2 Orbiter
Abstract Views :263 |
PDF Views:99
Authors
Arup Roy Chowdhury
1,
Vishnukumar D. Patel
1,
S. R. Joshi
1,
A. S. Arya
1,
Ankush Kumar
1,
Sukamal Paul
1,
Dhrupesh Shah
1,
Pradeep Soni
1,
J. C. Karelia
1,
Minal Sampat
1,
Satish Sharma
1,
Sandip Somani
1,
H. V. Bhagat
1,
Jitendra Sharma
1,
Amitabh
1,
K. Suresh
1,
R. P. Rajasekhar
1,
B. B. Bokarwadia
1,
Mukesh Kumar
1,
D. N. Ghonia
1
Affiliations
1 Space Applications Centre, Indian Space Research Organisation, Ahmedabad 380 015, IN
1 Space Applications Centre, Indian Space Research Organisation, Ahmedabad 380 015, IN
Source
Current Science, Vol 118, No 4 (2020), Pagination: 566-572Abstract
The paper presents the design and development of Terrain Mapping Camera-2 (TMC-2) for Chandrayaan- 2 including science objectives; system and sub-system configuration along with the realized performance of the camera; payload characterization; aspects related to data products, etc. TMC-2, onboard Chandrayaan-2 orbiter-craft is a follow-on of the Terrain Mapping Camera (TMC) onboard Chandrayaan- 1. It operates in visible panchromatic band. It comprises three identical electro-optical chains aligned for three views (–25, 0 and +25 degree) along track direction for generation of stereo images. It provides data with 5 m horizontal ground sampling distance to generate digital elevation model. TMC-2 based on the new configuration and sub-system designs has reduction in mass and power by more than 40% compared to TMC, without compromising the performance.Keywords
Digital Elevation Model, Light Transfer Characteristics, Relative Spectral Response, Signal-to-noise Ratio, Stereo Imaging, Square Wave Response, Terrain Mapping Camera-2.Full Text
References
- Kiran Kumar, A. S. and Chowdhury, A. R., Terrain mapping camera for Chandrayaan-1. J. Earth Syst. Sci., 2005, 114(6), 717–720.
- Kiran Kumar, A. S. et al., Terrain mapping camera: a stereoscopic high-resolution instrument on Chandrayaan-1. Curr. Sci., 2009, 96, 492–495.
- Kiran Kumar, A. S. et al., The terrain mapping camera on Chandrayaan-1 and initial results. In 40th Lunar and Planetary Science Conference, Houston Texas, 2009, Abstract #1584.
- Arya, A. S., Rajasekhar, R. P., Guneshwar Thangjam, Ajai and Kiran Kumar, A. S., Detection of potential site for future human habitability on the Moon using Chandrayaan-1 data. Curr. Sci., 2011, 100, 524–529.
- Arya, A. S., Rajasekhar, R. P., Amitabh, Gopala Krishna, B., Ajai and Kiran Kumar, A. S., Morphometric, rheological and compositional analysis of an effusive lunar dome using high resolution remote sensing data sets: a case study from Marius hills region. Adv. Space Res., 2014, 54, 2073–2086.
- Arya, A. S. et al., Morphometric and rheological study of lunar domes of Marius Hills volcanic complex region using Chandrayaan1 and recent datasets. J. Earth Syst. Sci., 2018, 127, 70.
- Arya, A. S. et al., Lunar surface age determination using Chandrayaan-1 TMC data. Curr. Sci., 2012, 102, 783–788.