TY - GEN
T1 - Angle measurement accuracy analysis of sum-difference amplitude-comparison monopulse in onshore or shipborne ISAR
AU - Zhou, Wei
AU - Xie, Junhao
AU - Yuan, Yeshu
AU - Li, Shaobin
N1 - Publisher Copyright:
© 2014 IEEE.
PY - 2014
Y1 - 2014
N2 - The effect of antenna rotation on the angle measurement accuracy in onshore or shipborne Inverse Synthetic Aperture Radar (ISAR) is investigated in this paper. The main monopulse ratio after coherent integration is approximately the amplitude and phase weighted sum of all the instantaneous monopulse ratios, which may affect the azimuth estimation. In order to reduce this impact, a non-coherent integration monopulse model is established. Furthermore, based on the experimental data, a method using the amplitude and phase to calculate the azimuth error and its polarity respectively is proposed, which is verified for different signal-to-noise ratio (SNR). In addition, for the extreme case with low SNR, the azimuth output is set by the use of the two basic antenna beams, where the deviation is depicted to be less than the angle measurement precision. The method proposed would be of advantage to the application of azimuth measurement in onshore or shipborne ISAR.
AB - The effect of antenna rotation on the angle measurement accuracy in onshore or shipborne Inverse Synthetic Aperture Radar (ISAR) is investigated in this paper. The main monopulse ratio after coherent integration is approximately the amplitude and phase weighted sum of all the instantaneous monopulse ratios, which may affect the azimuth estimation. In order to reduce this impact, a non-coherent integration monopulse model is established. Furthermore, based on the experimental data, a method using the amplitude and phase to calculate the azimuth error and its polarity respectively is proposed, which is verified for different signal-to-noise ratio (SNR). In addition, for the extreme case with low SNR, the azimuth output is set by the use of the two basic antenna beams, where the deviation is depicted to be less than the angle measurement precision. The method proposed would be of advantage to the application of azimuth measurement in onshore or shipborne ISAR.
KW - Angle measurement accuracy
KW - Coherent integration
KW - Inverse synthetic aperture radar (ISAR)
KW - Monopulse
UR - https://www.scopus.com/pages/publications/84940733434
U2 - 10.1109/ICDSP.2014.6900722
DO - 10.1109/ICDSP.2014.6900722
M3 - 会议稿件
AN - SCOPUS:84940733434
T3 - International Conference on Digital Signal Processing, DSP
SP - 531
EP - 535
BT - 2014 19th International Conference on Digital Signal Processing, DSP 2014
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2014 19th International Conference on Digital Signal Processing, DSP 2014
Y2 - 20 August 2014 through 23 August 2014
ER -