本文關(guān)鍵詞： 合成孔徑雷達(dá) Mosaic模式 方位向多通道 脈沖重復(fù)頻率　出處：《電子與信息學(xué)報》2014年12期 　論文類型：期刊論文

【摘要】：Mosaic模式是聚束和Scan SAR的混合模式,能同時實現(xiàn)高分辨率和大場景成像。該文提出一種基于方位向多通道的Mosaic模式,將成像場景沿距離向和方位向劃分為若干子成像塊,各塊采用滑動聚束模式獨立成像后再進(jìn)行2維拼接。利用短發(fā)射子孔徑使系統(tǒng)掃描角顯著減小,進(jìn)而降低系統(tǒng)設(shè)計難度,同時也使各子成像塊距離徙動量減小;方位向多通道接收能提高系統(tǒng)信噪比,利用空間采樣降低脈沖重復(fù)頻率,更有利于波位選擇。
[Abstract]:Mosaic mode is a hybrid mode of spotlight and Scan SAR, which can realize high resolution and large scene imaging at the same time. In this paper, a Mosaic mode based on azimuth multi-channel is proposed, in which the imaging scene is divided into several sub-imaging blocks along the range and azimuth directions. The scanning angle of the system is significantly reduced by using the short emission sub-aperture, and the system design difficulty is reduced, at the same time, the distance migration momentum of each sub-imaging block is also reduced. The azimuth multichannel receiver can improve the signal-to-noise ratio (SNR) of the system and reduce the pulse repetition frequency by using spatial sampling, which is more favorable to the selection of wave position.
【作者單位】： 中國科學(xué)院電子學(xué)研究所;中國科學(xué)院大學(xué);
【分類號】：TN958

【參考文獻(xiàn)】

相關(guān)期刊論文 前3條

1 Han Xiaodong;Xu Wei;Han Xiaolei;;PERFORMANCE ANALYSIS OF AZIMUTH ELECTRONIC BEAM STEERING MODE SPACEBORNE SAR[J];Journal of Electronics(China);2013年03期

2 劉光炎;孟U，

本文編號：1523454