Abstract：Angular glints are the main error sources for radar angular measurement in the terminal guidance, which may result larger tracking error or even lead to losses of the tracking if mishandled. Although the angle glint can be suppressed to some extent through Higher Range Resolution Profile (HRRP) processing, the tracking errors due to multiple scattering centers can not be thoroughly eliminated. It is found in this paper that the tracking errors are closely related with the attributes of scattering centers. The influence on angular measurements induced by scattering centers with various attributes is investigated theoretically and numerically in this paper. For high reliability of numerical results, the scattering responses of extended targets are simulated by the scattered fields computed by the full-wave numerical method in this paper. The reached conclusion of this paper can provide a theoretical reference for the techniques in order to improve the tracing accuracy of extended targets with multiple scattering centers.
LIU Liguo, MO Jinjun, FU Yunqi, et al. Study on near field angular glint computation based on GRECO[J]. Journal of Electronics & Information Technology, 2013, 35(4): 865-870. doi: 10.3724/SP.J.1146.2012.01573.
[3]
HOWARD D D. Radar target glint in tracking and guidance system based on echo signal phase distortion[J]. Proceedings of NEC, 1959, 15: 840-849.
ZHUANG Yaqiang, ZHANG Chenxin, ZHANG Xiaokuan, et al. Discussion of the suppression and control technology of angular glint[J]. Modern Defence Technology, 2015, 43(1): 52-58. doi: 10.3969/J.ISSN.1009-086X.2015.01.009.
[5]
马长征. 雷达目标三维成像技术研究[D]. [博士论文], 西安电子科技大学, 1999.
MA Changzheng. Radar three dimensional imaging techniques[D]. [Ph.D. dissertation], Xidian University, 1999.
ZHANG Tao, ZHANG Qun, MA Changzheng, et al. Angular glint suppression method based on high resolution range profile[J]. Journal of Xidian University, 2001, 28(3): 296-300.
[8]
SHENG X Q, JIN J M, SONG J M, et al. On the formulation of the hybrid finite-element boundary-integral methods for 3D scattering using multi-level fast multipole algorithm[J]. IEEE Transactions on Antennas and Propagation, 1998, 46(3): 303-311.
[9]
屈泉酉. 雷达目标散射中心模型及其应用[D]. [博士论文], 北京理工大学, 2015.
QU Quanyou. Scattering center models of radar targets and their applications[D]. [ Ph.D. dissertation], Beijing Institute of Technology, 2015.
GUO Kunyi, NIU Tongyao, QU Quanyou, et al. Research on signatures of scattering senters shown in time-frequency representation[J]. Journal of Electronics & Information Technology, 2016, 38(2): 478-485. doi: 10.11999/JEIT150598.
[11]
POTTER L C and MOSES R L. Attributed scattering centers for SAR ATR[J]. IEEE Transactions on Image Processing, 1997, 5(1): 79-91.
[12]
QU Quanyou, GUO Kunyi, and SHENG Xinqing. An accurate bistatic scattering center model for extended cone-shaped targets[J]. IEEE Transactions on Antennas and Propagation, 2014, 62(10): 5209-5218.
[13]
GUO Kunyi, LI Qifeng, SHENG Xinqing, et al. Sliding scattering center model for extended streamlined targets[J]. Progress In Electromagnetics Research, 2013, 139(3): 499-516.
[14]
GUO Kunyi and SHENG Xinqing. A precise recognition approach of ballistic missile warhead and decoy[J]. Journal of Electromagnetic Waves and Applications, 2009, 23(14-15): 1867-1875.
MA Jian, QIAN Tao, and ZHOU Jianxiong. Cross-range scaling of ISAR image based on angle measurement with high resolution range profiles[J]. Journal of Air Force Early Warning Academy, 2016, 30(3): 178-182. doi: 10.3969/ J.ISSN.2095-5839.2016.03.005
