The interferometric radar sensor is superior in detecting the relative displacement motions. The conventional motion-recovery techniques leverage the quadrature I/QI/Q signals to reconstruct the phase information, where accurate calibration of the I/QI/Q signals is a prerequisite. Accurate phase demodulation depends on the precision of signals calibration. Incorrect signals calibration and hardware imperfections may lead to false phase demodulation. In this letter, based on the signal segmentation and Hilbert transformation principle, a novel linear phase reconstruction technique is proposed, which not only involves a single receiver channel without bothering the I/QI/Q signals but also gets rid of the I/QI/Q signals calibration. Both simulation and experimental results show that the proposed single channel based phase demodulation (ScD) technique recreates the target motion without any phase ambiguity and improves the accuracy with an root mean squared error (RMSE) less than 0.01 mm, which is over 9 times than that of the other state-of-the-art approaches.

中文翻译：

---

基于新型免校准相位解调技术的单通道雷达传感器干涉运动传感


干涉雷达传感器在检测相对位移运动方面具有优越性。传统的运动恢复技术利用正交I/QI/Q信号来重建相位信息，其中I/QI/Q信号的精确校准是先决条件。准确的相位解调取决于信号校准的精度。不正确的信号校准和硬件缺陷可能会导致错误的相位解调。在这封信中，基于信号分割和希尔伯特变换原理，提出了一种新颖的线性相位重构技术，该技术不仅涉及单个接收通道而不干扰I/QI/Q信号，而且摆脱了I/QI/Q信号的影响。 Q 信号校准。仿真和实验结果表明，所提出的基于单通道的相位解调（ScD）技术可以在没有任何相位模糊的情况下重新创建目标运动，并且提高了精度，均方根误差（RMSE）小于0.01 mm，是传统技术的9倍以上。其他最先进的方法。