Range and Velocity Estimation of Moving Targets Using Multiple Stepped-frequency Pulse Trains

Gang Li; Huadong Meng; Xiang-Gen Xia; Ying-Ning Peng

doi:10.3390/s8021343

Range and Velocity Estimation of Moving Targets Using Multiple Stepped-frequency Pulse Trains

Sensors (Basel). 2008 Feb 22;8(2):1343-1350. doi: 10.3390/s8021343.

Authors

Gang Li¹, Huadong Meng², Xiang-Gen Xia³, Ying-Ning Peng²

Affiliations

¹ Department of Electronic Engineering, Tsinghua University, Beijing 100084, China. gangli@tsinghua.edu.cn.
² Department of Electronic Engineering, Tsinghua University, Beijing 100084, China.
³ Department of Electrical and Computer Engineering, University of Delaware, Newark, DE 19716, USA.

Abstract

Range and velocity estimation of moving targets using conventional steppedfrequencypulse radar may suffer from the range-Doppler coupling and the phasewrapping. To overcome these problems, this paper presents a new radar waveform namedmultiple stepped-frequency pulse trains and proposes a new algorithm. It is shown that byusing multiple stepped-frequency pulse trains and the robust phase unwrapping theorem(RPUT), both of the range-Doppler coupling and the phase wrapping can be robustlyresolved, and accordingly, the range and the velocity of a moving target can be accuratelyestimated.

Keywords: moving target; range and velocity estimation; robust phase unwrapping; stepped-frequency.