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A methodology is presented to accurately estimate electric power consumption from saturated nighttime DMSP/OLS imagery using a stable light correction. An area correction for the stable light image of DMSP/OLS for the year 1999 was performed and the building area rate data were used to clarify the intensity distribution characteristics of the stable light. Based on the spatial distribution characteristics...
We have developed a coaxial-type holographic disk system using the image-stabilizing (IS) technique. The IS technique provides sufficient light energy for recording and retrieving on a continuously rotating disk using a relatively low-power laser diode as the light source. Data-transfer rates of 200 Mbps have been achieved for such drives, but their uses are limited, because its optomechnical unit...
We have applied LDPC codes into our coaxial recording system, and revealed its fundamental characteristics. In addition, by applying the E(16, 3, 8) code and optimizing optical conditions, we have successfully improved the recording density, achieving the raw data density of 415 Gbit/in.2.
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