1989 年 9 巻 1 号 p. 31-41
It is important for research and development of advanced imaging sensors, as well as data analysis technology, to estimate the actual overall spatial resolution characteristics of such as MESSR optical imaging sensors system onboard MOS-1.
In MOS-1 Verification Program (MVP) we have studied computational techniques for estimating spatial resolution characteristics of satellite-based the MESSR sensor systems. Two methods for estimating overall spatial resolution characterestics of image sensor system have been investigated; Frequency domain method (Fourier transform) and Spatial domain method (Spatial convolution). Several factors affecting in estimation accuracy of the spatial characteristics are investigated by using numerical simulations.
This paper presents outline of two estimation methods of PSF/MTF of an image sensor system, including subpixel data generation processing by multiple contiguous scanline data with slightly different phase of the edge of step targets, an analysis and compensation processing for the degradation of sensor's spatial characteristics due to relative motion between platform (satellite) and ground scene.
Some results are shown through the estimation experiments for the PSF/MTF characteristics of the MESSR using MOS-Y MESSR CCT data.