Accurate non-contact retrieval in micro vibration by a 100GHz radar




经振动目标反射后, 雷达基带回波可以表示为一系列幅值与振动幅度有关的谐波。基于雷达回波的一个谐波对比值, 可以提取出目标的振动幅度参数。为了抑制噪声对振幅反演精度的影响, 本文提出了同时利用多谐波对, 基于最小均方误差的改进振幅反演方法。 同时, 基于100GHz雷达的振动测量实验, 证实了改进方法具有更高的振幅反演精度。

This is a preview of subscription content, access via your institution.


  1. 1

    Li C, Xiao Y, Lin J. Experiment and spectral analysis of a low-power Ka-band heartbeat detector mesuring from four sides of a human body. IEEE Trans Microw Theory Tech, 2006, 54: 4464–4471

    Article  Google Scholar 

  2. 2

    Lin C S, Chang S F, Chang C C, et al. Microwave human vocal vibration signal detection based on doppler radar technology. IEEE Trans Microw Theory Tech, 2010, 58: 2299–2306

    Article  Google Scholar 

  3. 3

    Gentile C. Deflection measurement on vibrating stay cables by non-contact microwave interferometer. NDT and E International, 2010, 43: 231–240

    Article  Google Scholar 

  4. 4

    Pieraccini M. Monitoring of civil infrastructures by interferometric radar: a review. The Scientific World J, 2013, 2013: 1–8

    Article  Google Scholar 

  5. 5

    Li C, Lin J. Non-contact measurement of periodic movements by a 22-40GHz radar sensor using nonlinear phase modulation. IEEE MTT-S Int Dig, 2007: 579–582

    Google Scholar 

Download references

Author information



Corresponding author

Correspondence to Cheng Hu.

Additional information

The authors declare that they have no conflict of interest.

Rights and permissions

Reprints and Permissions

About this article

Verify currency and authenticity via CrossMark

Cite this article

Wang, R., Li, A., Hu, C. et al. Accurate non-contact retrieval in micro vibration by a 100GHz radar. Sci. China Inf. Sci. 59, 109301 (2016).

Download citation


  • W波段
  • 高精度
  • 微弱振动
  • 贝塞尔函数
  • 多谐波对
  • 最小均方误差