[2] [2] ZHANG Lihua,XU Wei,HUANG Pingping,et al. Comparison of frequency diverse array patterns with nonuniform frequency offset [C]// 2020 IEEE MTT-S International Wireless Symposium(IWS). Shanghai, China: IEEE, 2020: 1-3. doi: 10.1109/IWS49314. 2020.9360153.

[3] [3] GREEN S D, KINGSLEY S P. Investigation of wide bandwidth HF radar waveforms[C]// IEEE Colloquium on Advanced Transmission Waveforms. London,UK:IET, 1995:2-1-8. doi:10.1049/ic:19950783.

[5] [5] LINDENFELD M J. Sparse frequency transmit-and-receive waveform design[J]. IEEE Transactions on Aerospace and Electronic Systems, 2004,40(3):851-861. doi:10.1109/TAES.2004.1337459.

[8] [8] POTTER L C,CHIANG D M,CARRIERE R,et al. A GTD-based parametric model for radar scattering[J]. IEEE Transactions on Antennas and Propagation, 1995,43(10):1058-1067. doi:10.1109/8.467641.

[9] [9] KANNAN N, KUNDU D. Estimating parameters in the damped exponential model[J]. Signal Processing, 2001, 81(11): 2343-2351. doi:10.1016/S0165-1684(01)00119-0.