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	Chirp estimation of PZT for integrating-bucket method (EI CONFERENCE) 会议论文 OAI收割 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, April 26, 2010 - April 29, 2010, Dalian, China 作者: Zhang J.; Liu W.; Zhang J.; Zhang J. 收藏 \| 浏览/下载：26/0 \| 提交时间：2013/03/25 The nonlinear response of the PZT for the integrating bucket method is studied by our proposed method: discrete chirp Fourier transform (DCFT) and maximum likelihood estimation (MLE) techniques for the integrating bucket method. Based on the signal processing theory the intensity obtained from CCD is processed by the DCFT and thus nonlinear response and chirp coefficient of the PZT can be coarsely estimated. This is followed by the MLE method in which an iterative optimization process is complemented for accurately estimating the nonlinear response and chirp coefficient of the PZT. One key advantage of the proposed method is that not only the nonlinear response and chirp coefficient of the PZT can be acquired but also initial phase acquired. Our method is tested by simulating conditions under which a certain magnitude of nonlinearity is assumed. Nonlinear response attained by the DCFT is compared to that attained by the MLE and a difference between the actual nonlinear response of the PZT and our accurate estimation by the proposed method is revealed. Several factors that will have influence on the nonlinear response of the PZT are discussed. 2010 Copyright SPIE - The International Society for Optical Engineering.
	单通道SAR运动目标检测方法研究学位论文 OAI收割硕士, 电子学研究所: 中国科学院电子学研究所, 2006 牛晓锋收藏 \| 浏览/下载：21/0 \| 提交时间：2011/07/19 合成孔径雷达运动目标检测频域滤波时频分析 DCFT frFT
	单通道SAR运动目标检测方法研究学位论文 OAI收割硕士, 电子学研究所: 中国科学院电子学研究所, 2006 牛晓锋收藏 \| 浏览/下载：51/0 \| 提交时间：2011/07/19 合成孔径雷达运动目标检测频域滤波时频分析 DCFT frFT