Mr. Rajendra K. I. Dave Profile

Rajendra K. I. Dave

at Space Applications Ctr

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Proceedings Article | 30 November 2006 Paper

INSAT-3D: an advanced meteorological mission over Indian Ocean

V. Katti, V. Pratap, R. Dave, K. Mankad

Proceedings Volume 6407, 640709 (2006) https://doi.org/10.1117/12.697880

KEYWORDS: Sensors, Imaging systems, Mirrors, Space operations, Filtering (signal processing), Infrared imaging, Optical filters, Short wave infrared radiation, Electronics, Signal processing

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This paper presents the salient features of INSAT 3D mission and its Met Payloads. INSAT-3D, the next ISRO meteorological satellite aims for a significant technological improvement in sensor capabilities as compared to earlier INSAT missions. It is an exclusive mission designed for enhanced meteorological observations and monitoring of land and ocean surfaces for weather forecasting and disaster warning. The three-axis stabilized geostationary satellite is to carry two meteorological instruments: a six channel Imager and an IR Sounder. Along with the channels in Visible, Middle Infrared, Water Vapor and Thermal Infrared bands, the Imager includes a SWIR channel for wider applications. The Sounder will have eighteen narrow spectral channels in three IR bands in addition to a channel in visible band. INSAT-3D is configured around standard 2000 kg I2K spacecraft bus with 7-year life. Several innovative technologies like on-the-fly correction of scan mirror pointing errors, biannual yaw rotation of the spacecraft, micro-stepping SADA, star sensors and integrated bus management unit have been incorporated to meet the stringent payload requirements like pointing accuracies, thermal management of IR detectors and concurrent operation of both instruments.

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