Resourcesat (IRS-P6) value added data products |
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| Authors: | S M Moorthi Nitant Dube D Dhar B Kartikeyan R Ramakrishnan |
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| Institution: | 1. Signal and Image Processing Group, Space Applications Centre - ISRO, 380 015, Ahmedabad, India
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| Abstract: | Remote sensing data products need to meet stringent geodetic and geometric accuracy specifications irrespective of intended
user applications. Georeferencing is the basic processing step towards achieving this goal. Having known the imaging geometry
and mechanism, the mathematical models built with the use of orbit and attitude information of the spacecraft can correct
the remote sensing data for its geometric degradations only up to system level accuracy (IRS-P6 DP Team, 2000). The uncertainties
in the orbit and attitude information will not allow the geometric correction model to generate products of accuracy that
can meet user requirements unless Ground Control Points (GCP) are used as reference geo-location landmarks. IRS-P6 data processing
team has been entrusted with developing a software system to generate data products that will have desired geodetic and geometric
accuracies with known limitations. The intended software system is called the Value Added Data Products System (VADS). Precision
corrected, Template Registered, Merged and Ortho Rectified products are the value added products planned with VADS. |
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