旁瓣成帶 的英文怎麼說
中文拼音 [bàngbànchéngdài]
旁瓣成帶
英文
side-lobe banding-
The main content and creative work in this dissertation include : ( 1 ) the characteristics of the lfm signals with band width equaling 5mhz, time width in 9 s ~ 42 s, nlfm signals with band width equaling 5mhz, time width in 9 s ~ 21 s are analyzed in frequency domain pulse compression. the corresponding side - lobes suppression filters are designed and optimized
本文完成的主要工作和創新之處有: （ 1 ）分別完成了對帶寬為5mhz ，時寬在9 s ~ 42 s范圍內lfm信號，帶寬為5mhz ，時寬在9 s ~ 21 s范圍內nflm信號的頻域脈沖壓縮的分析和旁瓣抑制濾波器的設計及優化。In this dissertation, the mathematic model of optically controlled phased linearity array is established by basic theory of phased array radar. the problems of instantaneous bandwidth of ocpar and subarray number are researched, the relationship between the excursion of the direction pattern and subarray number, main lobe stretched - out of the direction pattern and bandwidth, side - lobe level of the direction pattern and subarray number, pulse compression and bandwidth, pulse compression and subarray number is analyzed. after corresponding simulations are done, a summary of advantages of ocpar compared with the traditional phased array radar is presented
針對x波段信號，仔細研究了光控相控陣的瞬時帶寬問題和子陣數問題，分析了光控相控陣列方向圖偏移與信號帶寬及子陣數的關系，光控相控陣列方向圖主瓣展寬與帶寬的關系，方向圖旁瓣電平與子陣數的關系，脈沖壓縮與信號帶寬及子陣數的關系，完成了相應的模擬，通過與普通相控陣的對比，總結出了光控相控陣相對于傳統相控陣的巨大優勢。Thirdly, a modified extended chirp scaling ( ecs ) algorithm is presented, which solves the problem of producding fine focused images in the class of chirp scaling ( cs ) algorithm. lt can be used for uwb - sar imaging effectively. the phas e error produced by cs operation are analyzed. a windowed process in two dimension frequency domain before cs operation are proposed. it can improve the quality of image and widen the effectively swath and increase the peak to sidelobe ratio ( pslr )
然後針對chirpscaling （ cs ）類演算法不能對參考點精確聚焦的問題，提出了一種改進的擴展cs （ ecs ）演算法，實現了對uwb - sar的高效成像；分析了cs操作產生的相位誤差，提出在cs操作之前在二維頻率域對信號加窗，除有效提高信號的峰值旁瓣比（ pslr ）外，還可以提高圖像質量，增加有效測繪帶寬度。The content can be outlined as follows : the introduction of broadband beamforming, the study of a robust broadband generalized side lobecanceller ( gsc ), the discussion of an integral constraint beamforming based on subband processing. the broadband beamforming can be designed in time domain or frequency domain
內容包括：寬帶波束形成器的時域處理的介紹，一種穩健的寬帶旁瓣對消器；基於子帶處理的積分約束的波束形成器的設計；並在文中簡述了寬帶波束形成器時域處理以及頻域處理的優缺點。分享友人