%0 Conference Proceedings
%4 ltid.inpe.br/sbsr/2004/11.19.19.28
%2 ltid.inpe.br/sbsr/2004/11.19.19.28.14
%@isbn 85-17-00018-8
%T On-orbit spatial resolution estimation of CBERS-1 CCD imaging system using higher resolution images
%D 2005
%A Bensebaa, Kamel,
%A Banon, Gerald Jean Francis,
%A Fonseca, Leila Maria Garcia,
%@affiliation Instituto Nacional de Pesquisas Espaciais (INPE)
%@affiliation Instituto Nacional de Pesquisas Espaciais (INPE)
%@affiliation Instituto Nacional de Pesquisas Espaciais (INPE)
%@electronicmailaddress camel@dpi.inpe.br
%@electronicmailaddress banon@dpi.inpe.br
%@electronicmailaddress leila@dpi.inpe.br
%E Epiphanio, José Carlos Neves,
%E Fonseca, Leila Maria Garcia,
%B Simpósio Brasileiro de Sensoriamento Remoto, 12 (SBSR)
%C Goiânia
%8 16-21 abr. 2005
%I INPE
%J São José dos Campos
%P 827-834
%S Anais
%1 Instituto Nacional de Pesquisas Espaciais
%K CBERS-1 satellite, SPOT-4 satellite, CCD camera, spatial resolution, point spread function, estimation, modelling, simulation, measurement.
%X The first China-Brazil Earth Resources Satellite (CBERS-1) was launched in 1999 and in 2003 was substituted by CBERS-2. CBERS-1 and CBERS-2 have the same specifications and carry three sensors: WFI, CCD and IR-MSS. The performance of these sensors can be evaluated through PSF measurement that enables an objective assessment of the spatial resolution. This paper describes an approach to estimate the spatial resolution of the CBERS-1 CCD camera using two images: an image captured by CBERS-1 satellite and an image of the same scene of higher resolution captured by SPOT-4 satellite The method is iterative and the goal is to find the low-pass band filter parameter that minimizes the Root Mean Square (RMS) difference between the CBERS-1 image and the filtered SPOT-4 one. This technique is applied to spatial resolution estimation in across-track direction using an image of Lake Pontchartrain Causeway in Louisiana (United States), and, in along-track direction using an image of Rio-Niteroi Bridge in Rio de Janeiro (Brazil).
%9 Avaliação e Aplicações do CBERS
%@language Inglês
%3 827.pdf
%( sid.inpe.br/yolanda/2004/08.09.12.20