e-Article
INS-2B Nano-MX In-Orbit Sensor Performance and Initial Data Processing Results
Document Type
Conference
Author
Source
2023 IEEE India Geoscience and Remote Sensing Symposium (InGARSS) Remote Sensing Symposium (InGARSS), 2023 IEEE India Geoscience and. :1-4 Dec, 2023
Subject
Language
Abstract
The India-Bhutan SAT (INS-2B) satellite was launched on 26th November 2022 from the Indian Spaceport Sriharikota. The Nano-MX instrument onboard the INS-2B satellite provides multispectral remote sensing images over the Indian subcontinent. The primary objective of Nano-MX is to map Bhutan for natural resource monitoring, including forest assessment, wetland monitoring, and snow/glacier studies. The paper presents insight into the radiometric and geometric performance of Nano-MX using in-orbit sensor data. The radiometric correction procedures adopted for Nano-MX raw images are described, SNR performance and MTF measurement from Nano-MX images are computed. The geometric performance includes Band-to-Band Registration (BBR) characterization and improved location accuracy of Nano-MX data products estimated at diverse terrains. The reflectance profile generated from Nano-MX images is plotted for spectral bands, and Nano-MX surface reflectance is cross-validated with Landsat-9 OLI. In addition, Bhutan country-level mosaic using Nano-MX images confirms spatial/spectral fidelity across large geographical regions. The initial data processing results show that INS-2B Nano-MX radiometric and geometric quality parameters meet the required sensor specifications.