On the basis of phantom experiments, patient doses from radiography at different tube voltages were estimated, and effect of elevated tube voltages on quality of film image was studied.
作者以体模实验为基础，测定了不同管电压拍摄胸片时的病人剂量，考察了提高管电压对胶片影像质量的影响。
In order to improve the recognition effect and on the basis of analyzing the characteristic of MSTAR SAR image, a method of discrete wavelet analysis is proposed to extract features.
为了进一步提高MSTARSAR目标的识别效果，在分析了MSTAR SAR图像特点的基础上，提出了一种利用离散小波分解提取目标特征的方法。
In order to improve the recognition effect and on the basis of analyzing the characteristic of MSTAR SAR image, a method of discrete wavelet analysis is proposed to extract features.
为了进一步提高MSTARSAR目标的识别效果，在分析了MSTAR SAR图像特点的基础上，提出了一种利用离散小波分解提取目标特征的方法。
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