Abstract:This paper estimates high-resolution radial velocity and range profile of moving target for Ultra- WideBand (UWB) radar via State-Space (SS) method. First, an impulse response of scatterers in frequency domain is obtained by utilizing the echo with stretching in UWB radar to get the Hankel matrix used in SS method. Second, through SS, the radial velocity and range profile of target moving at high speed are estimated for UWB radar. The corresponding Cramér-Rao Lower Bound (CRLB) is further derived. This method is not only can estimate the high resolution range profile of the target, but also can avoid the variation of Doppler with the frequency in the bandwidth of signal, i.e., the influence of Doppler dispersion on radial velocity estimates. Also, this method has fine noise-rejection ability. Besides, due to only acquiring the impulse response in frequency domain and no considering the special waveform, the method there is not the restriction of the transmitted waveform, which is greatly different with wavelet transform. The simulation results corroborate the feasibility and effectivity of this method.
杨利民, 苏卫民, 顾红, 耿润潼, 邵欣. 状态空间法在超宽带雷达动目标速度及距离像估计中的应用[J]. 电子与信息学报, 2012, 34(5): 1051-1056.
Yang Li-Min, Su Wei-Min, Gu Hong, Geng Run-Tong, Shao Xin. Application of State-space Method to Velocity and Range Profile Estimation of Moving Target for Ultra-wide Band Radar. , 2012, 34(5): 1051-1056.