A cost-effective harmonic interferometric Doppler sensor has been developed to obtain both amplitude and phase of the micro-Doppler signatures of moving objects. A phase chopper is used to generate the harmonics of the interferometry signal. For cost-effectiveness, a Gunn diode source is used for signal generation and a neon lamp is employed as a broadband detector. An advanced signal processing algorithm has been developed to extract both amplitude and phase Doppler signatures. A prototype has been built to demonstrate the effectiveness of the harmonic interferometric Doppler sensor at 35 GHz, with Doppler objects such as human hand and metal objects. In addition, the broadband detection capability of the neon lamp allows the Doppler sensor to work up to the millimeter-wave regime and potentially beyond the terahertz (THz) wave regime. Due to the ruggedness of the neon lamp detector, it is expected that the Doppler sensor has important applications of sensing and wireless communication in harsh environment such as high-temperature, high-power and radioactive conditions.

中文翻译：

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带有氖灯探测器的谐波干涉多普勒传感器

已经开发出一种具有成本效益的谐波干涉多普勒传感器来获取移动物体的微多普勒特征的幅度和相位。相位斩波器用于生成干涉测量信号的谐波。为节约成本，使用耿氏二极管源产生信号，使用氖灯作为宽带检测器。已经开发出一种先进的信号处理算法来提取幅度和相位多普勒特征。已经构建了一个原型来演示 35 GHz 谐波干涉多普勒传感器的有效性，多普勒物体如人手和金属物体。此外，氖灯的宽带检测能力允许多普勒传感器在毫米波范围内工作，并可能超出太赫兹 (THz) 波范围。