Mass image data storage system for high resolution aerial photographic survey

被引：0
|
作者：
Zen, Luan [1 ,2 ]
Tan, Jiubin [1 ]
Zhao, Zhongwen [2 ]
机构：
[1] Harbin Inst Technol, Inst Ultraprecis Opt & Elect Instrument Engn, Harbin 150001, Peoples R China
[2] Acad Equipment Command & Technol, Beijing 101416, Peoples R China
来源：
FIFTH INTERNATIONAL SYMPOSIUM ON INSTRUMENTATION SCIENCE AND TECHNOLOGY | 2009年 / 7133卷
关键词：
aerial photographic; high-resolution image; mass storage; continuous storage speed;
D O I：
10.1117/12.807624
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
In order to make it possible for an image data acquisition and storage system used for aerial photographic survey to have a continuous storage speed of 144 MB/s and data storage capacity of 260GB, three main problems have been solved in this paper. First, with multi-channel synchronous DMA transfer, parallel data storage of four SCSI hard disks is realized. It solved the problem of the data transfer rate too high for direct storage. Then, to increase the data transfer rate, a high speed BUS based on LVDS and a SCSI control circuit based on FAS368M were designed. It solved the problem of PCI BUS limiting the storage speed. Finally, the problem of the SCSI hard disk continuous storage speed declining led by much time interval between two DMA transfers is solved by optimizing DMA channel. The practical system test shows that the acquisition and storage system has a continuous storage speed of 150 MB/s and a data storage capacity of 280GB. Therefore, it is a new storage method for high speed and mass image data.
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页数：7
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