An Autofocusing Algorithm for Monopulse Imaging

doi:10.3969/j.issn.0372-2112.2016.08.027

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An Autofocusing Algorithm for Monopulse Imaging

更新时间：2025-07-08

- An Autofocusing Algorithm for Monopulse Imaging
- Acta Electronica Sinica Vol. 44, Issue 8, Pages: 1962-1968(2016)
- 作者机构：
  
  1. 南京航空航天大学雷达成像与微波光子技术教育部重点实验室,江苏,南京,210016
  2. 河海大学计算机与信息学院,江苏,南京,211100
  3. 南京航空航天大学雷达成像与微波光子技术教育部重点实验室,江苏,南京,210016
  4. 河海大学计算机与信息学院,江苏,南京,211100
- 作者简介：
- 基金信息：
  
  National Natural Science Foundation of China (No.61301212, No.61201459);Aeronautical Science Foundation of China, ASFC (No.20132052030);China Postdoctoral Science Foundation (No.2012M511750);Funded by Postgraduate Science Research Program of Jiangsu Province (No.1301027B)
- DOI：10.3969/j.issn.0372-2112.2016.08.027
  CLC： TN958.4
- Published：2016
- 稿件说明：
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An Autofocusing Algorithm for Monopulse Imaging[J]. Acta Electronica Sinica, 2016, 44(8): 1962-1968.
DOI：

An Autofocusing Algorithm for Monopulse Imaging[J]. Acta Electronica Sinica, 2016, 44(8): 1962-1968. DOI： 10.3969/j.issn.0372-2112.2016.08.027.

摘要

本文针对单脉冲成像技术在实际处理中，鉴角曲线误差引起的方位分辨率下降问题，提出了一种用于单脉冲成像的自聚焦算法.算法通过迭代，自动从雷达接收数据中挑选孤立强散射点回波信号精确估计实际鉴角曲线，将其用于单脉冲成像处理中，实现图像方位自聚焦.仿真及实测数据处理结果表明，该方法能够有效降低测角误差对成像效果的影响，且对多数地貌场景数据具备鲁棒性，是一种实际可行的单脉冲成像自聚焦算法.

Abstract

To overcome the deterioration of azimuth resolution caused by errors of monopulse response curve (MRC) in practical processing

this paper proposes an autofocusing algorithm for monopulse imaging technique.By applying iterative steps

this algorithm automatically extracts the echo signals of isolated strong scatterers from the received data

and employs them to accurately estimate the actual MRC.The estimated curve is then used in the procedure of monopulse imaging to autofocus the image in azimuth.As is verified by simulation and experimental results

this algorithm can effectivelyreduce the impact of MRC errors on monopulse imaging and is robust to most of the ground scenes

making it feasible in practical processing.

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