ISAR_image(r,:) = fftshift(fft(compensated_echo(r,:).*window')); end %% 结果显示 % 绘制ISAR图像 figure('Name','ISAR成像结果'); dynamic_range = 40; % 动态范围(dB) imagesc(linspace(-PRF/2,PRF/2,Na), linspace(-fs*c/(2*B), fs*c/(2*B),Nr),... 20*log10(abs(ISAR_image...
3477python do_rootfs_install(){3478d.setVar('ROOT_CLEANDIRS_DIRS','/home/zhangsong/work/about_yocto/isar-kylin-addpackage/build/tmp/work/kylin-v101-amd64/isar-image-base-qemuamd64-wic-img_ext4-img/1.0-r0/rootfs')3479bb.build.exec_func('root_cleandirs',d)3480configure_cmds=(d.getVar(...
We applied NSDFB transform to ISAR image and implemented procedure to describe the characteristics of the algorithm. Both simulated and real ISAR data have been tested. The proposed technique keeps a balance between feature preservation and noise suppression. Finally, experimental results show that the...
3) SAR/ISAR image SAR/ISAR成像 例句>> 4) 3D ISAR imaging 三维ISAR成像 1. A 2D spectrum matched filter banks based 3D ISAR imaging algorithm for a target in high speed spinning is proposed. 提出了一种基于二维频谱匹配滤波器组的高速旋转目标三维ISAR成像的算法。
Abstract:Aiming at suppressing noise,eliminating stripe interference and improving the resolution of ISAR image,a sparse Bayesian learning algorithm based on bidirectional interpolation and information fusion in frequency domain is proposed in this paper,named BI-FF SBL algorithm here.Firstly,radial and tr...
2 A.Khotanzad,J.-H.Lu.Classification of Invariant Image Rep-resentations Using a Neual Net. IEEE Trans. on Acoustics, Speech and Signal Processing,1990;38(6):1028～1038 3 D.H.Ballard,C.M.Brown.Computer Vision, Englewood Cliffs.New Jersey: Prentice Hall, 1982 ...
1) instantaneous ISAR image 瞬时成像 1. The high resolution instantaneous Doppler frequency of different time is obtained by processing the Radar echo data with short time Fourier transform or Gabor transform,then theinstantaneous ISAR images of different time are obtained by computer experiment. ...
The wideband coherent pulse radar provides high resolution image of the target. A model of this image is composed of the complex envelope superposition of signals diffracted by the point scatterers. The values of complex envelope are distributed over the radar image coordinate plane in accordance ...
Based on the parametric sparse representation of the received ISAR signal, the problem of ISAR image formation is converted into the joint estimation of the target rotation rate and the sparse power distribution in the spatial domain. This goal is achieved by sequential minimization of L0 and L2...
the fusion of the Gabor magnitude and phase feature is used as the feature of ISAR image.Finally,five-type aircraft models are classified by using a nearest neighbor classifier with c 2as a dissimilarity measure in the computed feature space.The recognition method is tested on ISAR data ...