舰船目标Chirplet分解The ISAR imaging of ship is significant relative to plane. The imaging condition of ship is more complicated than plane due to the complexity of the ship's movement, and the conventional ISAR imaging algorithm to the plane can not be satisfactory to the ship. So, a new ...
To obtain high resolution ISAR image of ship target in motion with narrow-bandwidth T/R devices and a low-speed A/D sampler, an effective imaging method based on Linearly Modulated Stepped Frequency (LMSF) is proposed in this paper. Firstly, the signal model is developed and analyzed. Second...
Novel Method for Extraction of Ship Target with Overlaps in the SAR Image via EM Algorithm[J]. Journal of Systems Engineering and Electronics, 2024, 35(4): 874-887. [9] 曹蕊,王勇. 基于多普勒中心估计的机载SAR预处理方法,...
model of the airborne ISAR to the ship target under high sea conditions is established, and the influence of complex motion on the ISAR image is analyzed in detail. Then, combined with the translation compensation algorithm based on maximum image contrast and the Dual Band Phase Gradient Autofocus...
of the corapli cated relative nlotion,so we should seelect data for optimal ship imaging.In this paper,ISAR data col— leered from 8n ocean-going vessel is analyzed with aview towards selecting asubset of rhe￥03_|3e data for image formation This is done by identifying the regions which ...
Of particular interest are the expected image orientation and the effect of inaccurate knowledge of motion parameters on image quality. Both of these are considered in theory and then demonstrated in simulations based on multisource models of ship radar cross section 展开 ...
shipimaging;optimaltimeposition;optimallengthofthetimewindow;imagecontrast收稿日期:2010-02-09.基金项目:国家自然科学基金资助项目(60872100);教育部博 士点 基金资助项目(20092302110032) .作者简介:王 冉(1982—),男,博士研究生 ;姜义成(1964—),男,教授,博士生导师. 逆合成孔径雷达(ISAR)是一种为人们熟 知...
High resolution image of ship target under low SCNR condition is unable to be obtained by conventional ISAR imaging methods when long coherent integration time needed. To overcome this problem, a novel approach for imaging the ship target by airborne radar is proposed in this paper. Firstly, the...
4. ISAR Imaging of Ship Based on the Modified 4th Order Time-Frequency Distributions with Complex-Lag Argument [C] . Wang Ran, Jiang Yicheng Remote Sensing, Environment and Transportation Engineering (RSETE), 2012 2nd International Conference on . 2012 机译:基于修正的带有复杂滞后参数的四阶时...
chirp rate, centeral time and signal width. Then imstaneous image is obtained according to results of Chirplet. Multi-path is one problem which influences imaging of ship targets. We analyze the mechanism of multi-path and obtain signal model under the condition ...