TY - GEN
T1 - Azimuth phase center adaptive adjustment on transmit/receive for azimuth uniform sampling in HRWS SAR
AU - Hu, Jialuo
AU - Xu, Wei
AU - Huang, Pingping
AU - Tan, Weixian
AU - Zhang, Zhenhua
N1 - Publisher Copyright:
© 2019 IEEE.
PY - 2019/12
Y1 - 2019/12
N2 - The spaceborne multi-channel Synthetic Aperture Radar (SAR) systems, having the high-resolution wide-swath (HRWS) imaging capacity, are proving to be an extremely useful surveillance tool for remote sensing of the earth surface. However, azimuth nonuniform sampling will be generated, if the pulse repetition frequency (PRF) is not chosen as the optimum value. Although the phenomenon of azimuth non-uniform sampling could be reconstructed by azimuth multichannel reconstruction algorithms, the inverse character of such reconstruction algorithms might result in a degraded SAR system performance, particularly if the operated PRF strongly deviates from the optimum value. In this paper, an innovative azimuth phase center adaptive adjustment on transmit/receive (TX/RX) is proposed to generate uniform azimuth sampling even if the optimum PRF value is not taken. The phased array antenna architecture, consisting of a great number of individually controllable radiating elements, allows for adjusting the position of receive/transmit phase center in order to obtain uniform sampling. Simulation experiments verify the effect of the proposed system to compensate non-uniform sampling.
AB - The spaceborne multi-channel Synthetic Aperture Radar (SAR) systems, having the high-resolution wide-swath (HRWS) imaging capacity, are proving to be an extremely useful surveillance tool for remote sensing of the earth surface. However, azimuth nonuniform sampling will be generated, if the pulse repetition frequency (PRF) is not chosen as the optimum value. Although the phenomenon of azimuth non-uniform sampling could be reconstructed by azimuth multichannel reconstruction algorithms, the inverse character of such reconstruction algorithms might result in a degraded SAR system performance, particularly if the operated PRF strongly deviates from the optimum value. In this paper, an innovative azimuth phase center adaptive adjustment on transmit/receive (TX/RX) is proposed to generate uniform azimuth sampling even if the optimum PRF value is not taken. The phased array antenna architecture, consisting of a great number of individually controllable radiating elements, allows for adjusting the position of receive/transmit phase center in order to obtain uniform sampling. Simulation experiments verify the effect of the proposed system to compensate non-uniform sampling.
UR - https://www.scopus.com/pages/publications/85082479340
U2 - 10.1109/PIERS-Fall48861.2019.9021696
DO - 10.1109/PIERS-Fall48861.2019.9021696
M3 - 会议稿件
AN - SCOPUS:85082479340
T3 - 2019 Photonics and Electromagnetics Research Symposium - Fall, PIERS - Fall 2019 - Proceedings
SP - 1477
EP - 1482
BT - 2019 Photonics and Electromagnetics Research Symposium - Fall, PIERS - Fall 2019 - Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2019 Photonics and Electromagnetics Research Symposium - Fall, PIERS - Fall 2019
Y2 - 17 December 2019 through 20 December 2019
ER -