Open Access Open Access  Restricted Access Subscription or Fee Access

Target Feature Extraction based on Micro Doppler Analysis

R. Tarun Kumar Reddy, B.N. Nagaveni


When, in addition to the constant Doppler frequency shift induced by the bulk motion of a radar target, the target or any structure on the target undergoes micro-motion dynamics, such as mechanical vibrations or rotations, the micro-motion dynamics induce Doppler modulations on the returned signal, referred to as the micro-Doppler effect. We introduce the micro-Doppler phenomenon in radar, develop a model of Doppler modulations, derive formulas of micro-Doppler induced by targets with vibration, rotation, tumbling and coning motions, and verify them by simulation studies, analyze time-varying micro-Doppler features using high-resolution time-frequency transforms, and demonstrate the micro-Doppler effect observed in real radar data.


Micro-Doppler Signature, Time-Frequency Analysis, Micro-Motion, Micro-Doppler Modulations.

Full Text:



Chatzigeorgiadis, F., and D. Jenn, “A MATLAB Physical-Optics RCS Prediction Code,”IEEE Antennas & Propagation Magazine, Vol. 46, No. 4, August 2004, pp. 137–139.

Chatzigeorgiadis, F., “Development of Code for Physical Optics Radar Cross Section Prediction and Analysis Application,” Master’s Thesis, Naval Postgraduate School, Monterey,CA, September 2004.

Mallat, S., and Z. Zhang, “Matching Pursuit with Time-Frequency Dictionaries,” IEEE Transactions on Signal Processing, Vol. 40, No. 12, 1993, pp. 3397–3415.

Qian, S., and D. Chen, “Signal Representation Using Adaptive Normalized Gaussian Functions,” Signal Processing, Vol. 36, No. 1, 1994, pp. 1–11.

Chernyak, V. S., Fundamentals of Multisite Radar Systems, Amsterdam, the Netherlands: Gordon and Breach Scientific Publishers, 1998.

Smith, G. E., “Radar Target Micro-Doppler Signature Classification,” Ph.D. Dissertation, Department of Electronic and Electrical Engineering, University College London, 2008.


  • There are currently no refbacks.

Creative Commons License
This work is licensed under a Creative Commons Attribution 3.0 License.