RASAT, launched to its sun-synchronous orbit on 19.08.2011, is a 93 kg small satellite carrying an optical imager with Ground Sampling Distances (GSD) 7.5 m for panchromatic and 15 m for multispectral images. Optical imager is composed of a cassegrain telescope and a linear CCD sensor. The Modulation Transfer Functions (MTF) is a quality metric used in remote sensing and very important for characterization of optical imaging systems. In this study, the MTF of RASAT optical imaging system is calculated by using slanted edge method. This method is an image based MTF measurement method that calculates Edge Spread Function (ESF), Line Spread Function (LSF) and MTF, respectively. The ESF is the system response to a high contrast edge. The derivative of the ESF produces the LSF, which is the system response to a high contrast line. The normalized magnitude of the Fourier Transform of the LSF produces MTF. Data processing software is developed under MATLAB to calculate and to plot the ESF, LSF, and MTF graphs.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    On-orbit modulation transfer function estimation For RASAT


    Contributors:


    Publication date :

    2013-06-01


    Size :

    1127885 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



    Commissioning of Attitude and Orbit Determination and Control System of RASAT Satellite

    Akbas, Mustafa / Acar, Yusuf / Gulmammadov, Farid et al. | AIAA | 2013


    Rasat Leo Satellite Power System Design and Operation

    Akin, Metin / Dag, Bulent | IEEE | 2007


    Integration and Testing of Optical Imaging System for RASAT

    Kim, Ee-Eul / Choi, Young-Wan / Choi, Woong et al. | IEEE | 2007


    Performance evaluation of pansharpening methods on GPU for RASAT images

    Acikgoz, Ibrahim Serdar / Teke, Mustafa / Kutbay, Ugurhan et al. | IEEE | 2015