Volume 1 Issue 3
Sep.  2012
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Yang Li-min, Su Wei-min, Gu Hong, Bo Chao. Velocity Estimation of Moving Target Based on Two-dimensional Projection for LFM UWB Radar[J]. Journal of Radars, 2012, 1(3): 232-237. doi: 10.3724/SP.J.1300.2012.20048
Citation: Yang Li-min, Su Wei-min, Gu Hong, Bo Chao. Velocity Estimation of Moving Target Based on Two-dimensional Projection for LFM UWB Radar[J]. Journal of Radars, 2012, 1(3): 232-237. doi: 10.3724/SP.J.1300.2012.20048

Velocity Estimation of Moving Target Based on Two-dimensional Projection for LFM UWB Radar

doi: 10.3724/SP.J.1300.2012.20048
  • Received Date: 2012-08-24
  • Rev Recd Date: 2012-09-11
  • Publish Date: 2012-06-28
  • Two-Dimensional (2D) projection in temporal-Doppler plan is utilized to solve the effects of range-Doppler coupling and Doppler dispersion on radial velocity estimation for Linear Frequency Modulation (LFM) Ultra-WideBand (UWB) radar. First, temporal-Doppler 2D plane is got via 2D Fourier transform in fast-slow time domain. Second, 2D projection is performed to obtain energy focusing in UWB Doppler domain through mapping the UWB signal into narrow signal. Finally, radial velocities of moving targets are obtained according to the Doppler frequencies of the narrow signal after the mapping. This method not only solves the negative impacts of UWB radar Doppler dispersion on velocity estimation, but also voids that energy can not be accumulated in slow time since targets move along range resolution bins. Range profile of targets can also be got via the corresponding compensation with the estimated velocities. Besides, the velocity restriction is further derived according to the corresponding requirements. The simulation results illustrate the effectiveness of this method.
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    沈阳化工大学材料科学与工程学院 沈阳 110142

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Velocity Estimation of Moving Target Based on Two-dimensional Projection for LFM UWB Radar

doi: 10.3724/SP.J.1300.2012.20048

Abstract: Two-Dimensional (2D) projection in temporal-Doppler plan is utilized to solve the effects of range-Doppler coupling and Doppler dispersion on radial velocity estimation for Linear Frequency Modulation (LFM) Ultra-WideBand (UWB) radar. First, temporal-Doppler 2D plane is got via 2D Fourier transform in fast-slow time domain. Second, 2D projection is performed to obtain energy focusing in UWB Doppler domain through mapping the UWB signal into narrow signal. Finally, radial velocities of moving targets are obtained according to the Doppler frequencies of the narrow signal after the mapping. This method not only solves the negative impacts of UWB radar Doppler dispersion on velocity estimation, but also voids that energy can not be accumulated in slow time since targets move along range resolution bins. Range profile of targets can also be got via the corresponding compensation with the estimated velocities. Besides, the velocity restriction is further derived according to the corresponding requirements. The simulation results illustrate the effectiveness of this method.

Yang Li-min, Su Wei-min, Gu Hong, Bo Chao. Velocity Estimation of Moving Target Based on Two-dimensional Projection for LFM UWB Radar[J]. Journal of Radars, 2012, 1(3): 232-237. doi: 10.3724/SP.J.1300.2012.20048
Citation: Yang Li-min, Su Wei-min, Gu Hong, Bo Chao. Velocity Estimation of Moving Target Based on Two-dimensional Projection for LFM UWB Radar[J]. Journal of Radars, 2012, 1(3): 232-237. doi: 10.3724/SP.J.1300.2012.20048

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