%0 Journal Article %T Range and Velocity Estimation of Moving Targets Using Multiple Stepped-frequency Pulse Trains %A Gang Li %A Huadong Meng %A Xiang-Gen Xia %A Ying-Ning Peng %J Sensors %D 2008 %I MDPI AG %R 10.3390/s8021343 %X 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. %K moving target %K range and velocity estimation %K stepped-frequency %K robust phase unwrapping %U http://www.mdpi.com/1424-8220/8/2/1343