A Phase Adjustment Algorithm for ISAIL Based on Sparsity

ZANG Bo; GUO Rui; ZHANG Lei; TANG Yu; XING Meng-dao

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A Phase Adjustment Algorithm for ISAIL Based on Sparsity

更新时间：2025-07-16

- A Phase Adjustment Algorithm for ISAIL Based on Sparsity
- Acta Electronica Sinica Vol. 39, Issue 6, Pages: 1272-1277(2011)
- 作者机构：
  
  西安电子科技大学雷达信号处理重点实验室,陕西,西安,710071
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN958.98
- Published：2011
- 稿件说明：
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ZANG Bo, GUO Rui, ZHANG Lei, et al. A Phase Adjustment Algorithm for ISAIL Based on Sparsity[J]. Acta Electronica Sinica, 2011, 39(6): 1272-1277.
DOI：

ZANG Bo, GUO Rui, ZHANG Lei, et al. A Phase Adjustment Algorithm for ISAIL Based on Sparsity[J]. Acta Electronica Sinica, 2011, 39(6): 1272-1277. DOI：

摘要

逆合成孔径成像激光雷达(Inverse Synthetic Aperture Imaging Lidar

ISAIL)的回波信号在距离-多普勒(Range-Doppler

R-D)域具有稀疏性

由此本文提出一种以稀疏性为全局约束条件的相位校正算法

并引入正则化方法解决此问题.在算法的实现过程中引入了Hadamard乘法和快速傅立叶变换

提高了算法的运算速率.与传统的ISAIL成像算法相比

此算法可以在低信噪比或回波存在缺失的情况下得到聚焦良好的目标像.仿真及实测数据验证了算法的可行性和有效性.

Abstract

Due to the sparsity of inverse synthetic aperture imaging lidar (ISAIL) echoes in range-Doppler (R-D) plane

a phase adjustment algorithm for ISAIL is proposed.The sparsity is used as a global constraint condition for phase adjustment

then the regularization method is brought in to solve this optimization problem.Hadamard multiplication and fast Fourier transform are applied to improve the computation efficiency.Compared with the traditional ISAIL imaging algorithm

image of target is well focused by our method under the condition of low SNR or lack of echoes.The ISAIL imaging experiments with numerical and measured data validate the feasibility and effectiveness of the proposed algorithm.

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