根据纸币防伪特征区域载体材料与制作工艺的不同, 利用透射式太赫兹脉冲成像技术对2005版真伪百元人民币的白水印和安全线两处防伪特征区域进行逐点扫描获取相应的太赫兹时域信号, 然后对太赫兹波形进行数据处理获得时域显示模式成像及频域显示模式成像。 将真钞和假钞的成像结果进行对比, 发现白水印、 安全线部位的真假钞成像结果区别明显, 证实太赫兹脉冲成像技术能够真实、 有效地对真假人民币进行多区域、 多维度的准确鉴定。

Due to the different production material and process between real and counterfeit paper currency, we identified the true and counterfeit hundred RMB of the 2005 edition based on transmitted THz pulse imaging. The point-to-point terahertz pulse imaging technique was used to scan two feature anti-counterfeit area, white watermark and holographic safety margin. Based on the obtained time-domain data and the corresponding frequency-domain data, the THz images with time-domain display mode and frequency-domain display mode were mapped. The difference of imaging effect is obvious at white watermark area and safety line area, which confirm that the transmission terahertz pulse imaging technique can truly and effectively carry out multi-regional and multi-dimensional authenticating true and counterfeiting RMB.