Description: ISAR simulation on ISAR motion compensation and SAR imaging Matlab source-ISAR simulation on ISAR motion compensation and SAR imaging Matlab source
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Author:an |
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Description: ：近距离目标超高分辨率微波成像技术在安全检测、非破坏性控制、生物医学等领域中有着非常重要的应用
价值和广阔的应用前景。该文利用基于窄脉冲形式的超宽带时域雷达系统研究近距离目标的高分辨率ISAR成像，
给出了仿真和实测结果。利用转台旋转目标，基于超宽带脉冲源和超宽带收发天线以及高性能取样示波器，配以同
步触发脉冲和自行研发的数据采集软件，搭建了该时域雷达实验系统，提出了准确获取目标回波信息的实验条件，
和实现回波延时精确校正的误差补偿方法。并针对采样时间窗内的杂波干扰，讨论了时域后向投影算法(Back
Projection，BP)与背景对消技术相结合的成像算法，实现了分辨率为 8 mm 的近距离目标的成像，准确地反映了
目标的位置、形状和大小等信息。- The high resolution imaging of near field targets are interesting for security, non-destructive control and
biomedical application. In this paper, high resolution near field ISAR imaging is implemented using Ultra Wide
Band (UWB) time domain radar system. Simulation and experiment are both conducted. The target is rotated by
turntable. The system is built based on the UWB pulse source, UWB antennas, high performance sampling
oscillograph, synchronous trigger pulse and proper motion study data acquisition software. Experiment condition
and delay errors compensation method are presented to obtain accurate echo information of the target. And Back
Projection (BP) combined with background cancel algorithm is discussed considering the clutter interference in
time window. Platform: |
Size: 1698816 |
Author:chinaafxp |
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Description: 本文首先研究了ISAR成像的基本原理，在理想转台模型的基础上对距离-多普勒(R-D)成像算法做了分析，对目前常用的运动补偿技术进行了对比和研究，并将这些技术用于雅克-42飞机的实测数据中。然后，论文系统地论述了压缩感知主体理论，重点对信号重构中的基追踪(BP)算法和正交匹配追踪(OMP)算法进行了深入的研究和讨论，并通过正弦信号的仿真结果验证了两种方法的有效性。-Firstly, the basic principle of ISAR imaging study, based on an ideal model for distance turntable- Doppler (RD) imaging algorithm to do the analysis of the motion compensation techniques currently used are compared and studied, and the use of these technologies in the measured data in the Yak-42 aircraft. Then, the paper systematically discusses the theory of compressed sensing body, focusing on the signal reconstruction of the base track (BP) algorithm and orthogonal matching pursuit (OMP) algorithm is conducted in-depth studies and discussions, and the simulation results verify the sinusoidal signal the effectiveness of the two methods. Platform: |
Size: 12288 |
Author:tianyuetong |
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Description: 程序内包含所有主要的ISAR成像运动补偿方法。
其中，包络对齐方法包括：1、积累互相关法 2、最小熵法 3、模一法 4、模二法。相位校正方法包括：1、相邻相位差法（多普勒中心）2、单特显点法-Motion compensation program contains all the major ISAR imaging method.Among them, the envelope alignment methods include: accumulation of cross-correlation method, minimum entropy method, a method, the method of mode 2.Phase correction method includes: the adjacent phase difference method (doppler center) and single point method Platform: |
Size: 7168 |
Author:Lucy |
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Description: 对散射点模型飞机进行参数类运动补偿，进行成像，并对成像结果做CFAR检测。(The parameter class motion compensation of the scattering point model aircraft is carried out, and the imaging results are detected by CFAR.) Platform: |
Size: 2048 |
Author:空军参谋
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