Abstract
In multiple channels in azimuth high resolution and wide swath (MC-HRWS) SAR system, the azimuth signal reconstruction of moving target based on the space-time equivalent sampling principle exists a periodical phase error on account to the radial motion of moving target. For compensating the above phase error, this proposed algorithm combines the undersampling discrete-time fractional Fourier transform (DFRFT) with the Doppler centroid ambiguity estimation to obtain the radial velocity. Before the above process, this paper applies the displace phase center antenna (DPCA) to suppress the clutter for detecting the moving target. After the process of compensating the phase error, the reconstructed azimuth signal is focused unambiguously by the traditional azimuth focusing approach. By the experiments and performance analysis, the validity of the proposed algorithm is demonstrated.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Krieger, G., Gebert, N., Moreira, A.: Unambiguous SAR signal reconstruction from nonuniform displaced phase center sampling. Geosci. Remote Sens. Lett. IEEE 1(4), 260–264 (2004)
Okada, Y., Nakamura, S., Iribe, K., et al.: System design of wide swath, high resolution, full polarimietoric L-band SAR onboard ALOS-2. In: IEEE International Geoscience and Remote Sensing Symposium - IGARSS, pp. 2408–2411. IEEE (2013)
Wang, L., Jia, X., Peng, S., et al.: Ground moving target indication for MIMO-SAR. In: Asian-Pacific Conference on Synthetic Aperture Radar, 2009. APSAR 2009, pp. 173–176. IEEE (2009)
Wu, Q., Xing, M., Qiu, C., et al.: Motion parameter estimation in the SAR system with low PRF sampling. IEEE Geosci. Remote Sens. Lett. 7(3), 450–454 (2010)
Zhang, S.X., Xing, M.D., Xia, X.G., et al.: A novel moving target imaging algorithm for HRWS SAR based on local maximum-likelihood minimum entropy. IEEE Trans. Geosci. Remote Sens. 52(9), 5333–5348 (2014)
Baumgartner, S.V., Schaefer, C., Krieger, G.: Simultaneous low PRF GMTI and HRWS SAR imaging without changing the system operation mode. In: Proceedings of European Conference on Synthetic Aperture Radar. EUSAR 2014, pp. 1–4. VDE (2014)
Huadong, S., Lizhi, Z., Xuesong, J.: Parameter estimations based on DPCA-FrFT algorithm for three-channel SAR-GMTI system. In: International Conference on Intelligent Computation Technology and Automation, pp. 640–644. IEEE (2011)
Meng, X.Y., Wang, Y.: Fractional Fourier domain analysis of decimation and interpolation. Sci. China Press 50(4), 521–538 (2007)
Acknowledgement
This work was supported by the National Natural Science Foundation of China 61201304 and 61201308. It also thanks for the Aerospace Innovation Foundation of China, and the Science and Technology Innovation Project of Harbin under Grant 2013RFQXJ097.
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2019 Springer Nature Singapore Pte Ltd.
About this paper
Cite this paper
Zhang, Y., Guo, Y., Ji, Z., Mu, H., Guo, L. (2019). A Novel Algorithm of Radial Velocity Estimation for MC-HRWS System. In: Liang, Q., Mu, J., Jia, M., Wang, W., Feng, X., Zhang, B. (eds) Communications, Signal Processing, and Systems. CSPS 2017. Lecture Notes in Electrical Engineering, vol 463. Springer, Singapore. https://doi.org/10.1007/978-981-10-6571-2_168
Download citation
DOI: https://doi.org/10.1007/978-981-10-6571-2_168
Published:
Publisher Name: Springer, Singapore
Print ISBN: 978-981-10-6570-5
Online ISBN: 978-981-10-6571-2
eBook Packages: EngineeringEngineering (R0)