| 星图质心提取的实时性研究 |
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| 引用本文： | 樊晓宇,江浩.星图质心提取的实时性研究[J].航天控制,2011,29(5):48-52. |
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| 作者姓名： | 樊晓宇 江浩 |
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| 作者单位： | 第二炮兵工程学院,西安,710025 |
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| 摘 要： | 数据更新率是衡量星敏感器性能的一个重要参数,高数据更新率对质心提取的实时性提出了更高的要求.FPGA(现场可编程门阵列)具有快速逻辑运算和并行处理结构的特点,针对这些特点对质心提取过程进行研究.使用FP-GA内部的高速存储器作为缓存,提高对数据的读取速度.将质心提取中的阈值分割、星点像素提取和质心计算3个过程进行并行处...
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| 关 键 词： | 星敏感器 质心提取 高斯拟合法 FPGA 并行处理 |
The Research of Fast Centroid Locating for Star Image |
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| FAN Xiaoyu,JIANG Hao.The Research of Fast Centroid Locating for Star Image[J].Aerospace Control,2011,29(5):48-52. |
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| Authors: | FAN Xiaoyu JIANG Hao |
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| Institution: | FAN Xiaoyu JIANG Hao The Second Artillery Engineering College,Xi'an 710025,China |
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| Abstract: | The update rate is a key characteristic for star sensor.The higher update rate responds from faster centroid locating.The process of centroid locating is investigated by the characteristics of high logical calculation speed and parallel process structure of field programmable gate arrays(FPGA).In order to get higher data read speed,the on-chip-ram of FPGA which has high work speed is used as buffer.The algorithm for image threshold divided,star pixel recognition and Gauss curve fitting methods are implement... |
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| Keywords: | Star sensor Centroid locating Gauss curve fitting methods FPGA Parallel process |
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