LI Bo (李波)1, XU Zheng-ping (徐正平)2, LI Jun (李军)2 , HUANG Hou-tian (黄厚田)2, WANG De-jiang (王德江)2
(1. Aviation Commissary of Navy in Changchun, Changchun 130033, China; 2. Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China)
Abstract：The time delay integration charge coupled device (TDI CCD) is the key component in remote sensing systems. The paper analyzes the structure and the working principles of the device according to a customized TDI CCD chip. Employing the special clock resources and large-scale phase locked logic (PLL) in field-programmable gate arrays (FPGA), a timing-driven approach is proposed, using which all timing signals including reset gate, horizontal and vertical timing signals, are implemented in one chip. This not only reduces printed circuit board (PCB) space, but also enhances the portability of the system. By studying and calculating CCD parameters thoroughly, load capacity and power consumption, package, etc, are compared between various candidates chips, and detailed comparison results are also listed in table. Experimental results show that clock generator and driving circuit satisfy the requirements of high speed TDI CCD.
Key words：time delay integration charge coupled device（TDI CCD）; timing-driven circuit; field-programmable gate arrays（FPGA）
CLD number： TN29 Document code： A
Article ID： 1674-8042(2012)02-0185-06doi： 10.3969/j.issn.1674-8042.2012.02.017
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