TY - GEN
T1 - Analysis of Antenna Pointing Error for Ground-Based Radar Lunar Imaging
AU - Lu, Jinfan
AU - Yang, Yuewen
AU - Zhu, Kaiwen
AU - Wang, Zhen
AU - Li, Linghao
AU - Ding, Zegang
N1 - Publisher Copyright:
© 2024 IEEE.
PY - 2024
Y1 - 2024
N2 - The accurate mapping of the lunar surface is crucial for future missions, yet ground-based (GB) radar system faces challenges due to antenna pointing error. This paper investigates the pointing error in GB radar antennas used for lunar surface imaging. To begin with, the systematic errors in GB radar system are analyzed, and empirical error models for both elevation and azimuth angles are established. Based on these error models, an antenna pointing error model is developed, an echo signal amplitude loss model is then formulated for analysis. Simulations demonstrate the time-varying of this error and its impact on image quality. The impact on the imaging quality is minor, yet specific directions exhibit more pronounced degradation, particularly in the Y-axis, with more noticeable degradation in Peak-Side-Lobe Ratio (PSLR) and Integrated-Side-Lobe Ratio (ISLR).
AB - The accurate mapping of the lunar surface is crucial for future missions, yet ground-based (GB) radar system faces challenges due to antenna pointing error. This paper investigates the pointing error in GB radar antennas used for lunar surface imaging. To begin with, the systematic errors in GB radar system are analyzed, and empirical error models for both elevation and azimuth angles are established. Based on these error models, an antenna pointing error model is developed, an echo signal amplitude loss model is then formulated for analysis. Simulations demonstrate the time-varying of this error and its impact on image quality. The impact on the imaging quality is minor, yet specific directions exhibit more pronounced degradation, particularly in the Y-axis, with more noticeable degradation in Peak-Side-Lobe Ratio (PSLR) and Integrated-Side-Lobe Ratio (ISLR).
KW - antenna pointing error
KW - echo amplitude loss
KW - ground-based (GB) radar
KW - lunar imaging
UR - http://www.scopus.com/inward/record.url?scp=86000002106&partnerID=8YFLogxK
U2 - 10.1109/ICSIDP62679.2024.10868751
DO - 10.1109/ICSIDP62679.2024.10868751
M3 - Conference contribution
AN - SCOPUS:86000002106
T3 - IEEE International Conference on Signal, Information and Data Processing, ICSIDP 2024
BT - IEEE International Conference on Signal, Information and Data Processing, ICSIDP 2024
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2nd IEEE International Conference on Signal, Information and Data Processing, ICSIDP 2024
Y2 - 22 November 2024 through 24 November 2024
ER -