Static clutter elimination for frequency‐modulated continuous‐wave radar displacement measurement based on phasor offset compensation

Abstract

The displacement measurement with frequency-modulated continuouswave radar based on radar interferometry technique has attracted growing interest in recent years. One of the main challenging issues is the static clutter interference in the same range bin, which results in amplitude shrinkage. A novel approach from signal processing side is proposed, i.e. implementing a post-processing procedure based on phasor offset compensation, which can be formulated as a circle fitting problem regarding phasor representation. Both simulated and experimental results are provided to validate the effectiveness and superiority of the proposed technique.

Improved synchroextracting transform for frequency‐modulated signals

“…Equation ( 16) demonstrates that the newly constructed 2D IF ω [2] (t, ω) can precisely match the true IF of the linear FM signal better than the original 2D IF estimate given in Equation (3). Equation ( 8) also indicates that the amplitude of the STFT result is far away from the true amplitude of the signal in the trajectory ω = φ (t).…”

“…The frequency-modulated (FM) phenomenon can be widely found in the real-world signals recorded from practice, for example, the bat echo signal and the vibration signal of a rotating machine under nonstationary speed [1][2][3]. How to address such signals is always challenging in the signal processing fields, and its critical aim is to extract the instantaneous feature of the signal [4].…”

“…Equation ( 8) also indicates that the amplitude of the STFT result is far away from the true amplitude of the signal in the trajectory ω = φ (t). To deal with this problem, we also construct a new STFT result G [2] (t,ω) according to Equation (17):…”

Dynamic Eigenimage Based Background and Clutter Suppression for Ultra Short-Range Radar

“…However, in numerous applications and classification tasks it is desirable to detect more than one object at a time. A phasor offset compensation method for static clutter removal is proposed in Xiong et al (2017). SVD is compared to frame differencing (FD) in Eren et al (2017) and Abujarad et al (2005).…”

Theory and method of multi-point synchronous deformation and vibration measurement based on millimeter-wave sensing

“…Scherr等人 [19] 提出一种基 [21,22] . 通过搭建微 波感知系统, 着重从信号处理角度提出了基于线性调 频连续波(linear frequency-modulated continuous wave, LFMCW)雷达的精确距离感知 [23] 、微动信息提取 [24] 和静态杂波干扰抑制方法 [25] , 实现了高精度的非接触…”