TY - GEN
T1 - A Space Synchronization Method Based on Sea Clutter Energy
AU - Lin, Jinsong
AU - Chen, Tao
AU - Li, Junao
AU - Yang, Qing
AU - Li, Zhongyu
AU - Yang, Jianyu
N1 - Publisher Copyright:
© 2023 IEEE.
PY - 2023
Y1 - 2023
N2 - Space synchronization, as one of the three major synchronization issues of bistatic synthetic-aperture radar (BiSAR), is a prerequisite for subsequent signal processing. However, traditional space synchronization methods rely on the accuracy of positioning systems such as global positioning system (GPS) and inertial navigation system (INS), and are unable to cope with situations where positioning systems fail or accumulate significant errors. To solve the problems, a space synchronization method based on sea clutter energy has been proposed. First, by changing the azimuth and pitch angles of the receiver, the scanning echo from sea clutter is obtained. Then, after filtering to remove moving targets and strong points interference, the energy of each pulse is calculated and the energy peak is considered to be the moment when the bistatic radar achieves space synchronization. Finally, the particle swarm optimization (PSO) algorithm is used to re-estimate the relative positions of the radars, thereby achieving space synchronization for targets of interest. Compared with traditional space synchronization methods, this method does not rely on the positioning system, which can achieve azimuth and pitch angle estimation accuracy of no more than 0.5° and perform positioning within an error range of 150 m under the condition of radar position system failure.
AB - Space synchronization, as one of the three major synchronization issues of bistatic synthetic-aperture radar (BiSAR), is a prerequisite for subsequent signal processing. However, traditional space synchronization methods rely on the accuracy of positioning systems such as global positioning system (GPS) and inertial navigation system (INS), and are unable to cope with situations where positioning systems fail or accumulate significant errors. To solve the problems, a space synchronization method based on sea clutter energy has been proposed. First, by changing the azimuth and pitch angles of the receiver, the scanning echo from sea clutter is obtained. Then, after filtering to remove moving targets and strong points interference, the energy of each pulse is calculated and the energy peak is considered to be the moment when the bistatic radar achieves space synchronization. Finally, the particle swarm optimization (PSO) algorithm is used to re-estimate the relative positions of the radars, thereby achieving space synchronization for targets of interest. Compared with traditional space synchronization methods, this method does not rely on the positioning system, which can achieve azimuth and pitch angle estimation accuracy of no more than 0.5° and perform positioning within an error range of 150 m under the condition of radar position system failure.
KW - Bistatic Synthetic-aperture radar
KW - optimization algorithm
KW - sea clutter
KW - space synchronization
UR - https://www.scopus.com/pages/publications/85183584733
U2 - 10.1109/CISS60136.2023.10380080
DO - 10.1109/CISS60136.2023.10380080
M3 - 会议稿件
AN - SCOPUS:85183584733
T3 - CISS 2023 - 4th China International SAR Symposium
BT - CISS 2023 - 4th China International SAR Symposium
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 4th China International SAR Symposium, CISS 2023
Y2 - 4 December 2023 through 6 December 2023
ER -