pulse compression signal造句
例句與造句
- In this paper , firstly , radar pulse compression is introduced briefly , summarize three primary pulse compression signals : lfm , nlfm , pcm
本文首先對(duì)雷達(dá)脈沖壓縮的原理作了簡(jiǎn)要的介紹，進(jìn)一步詳細(xì)分析了應(yīng)用最廣泛的線性調(diào)頻信號(hào)，并簡(jiǎn)要介紹了非線性調(diào)頻信號(hào)和相位編碼信號(hào)。 - Lfm signal is a classic pulse compression signal and it is one of the ultra - wideband radar waveforms , there is sophisticated theoretical basis of its generating , receiving and processing
線性調(diào)頻信號(hào)作為一種典型的脈壓信號(hào),同時(shí)也是超寬帶雷達(dá)調(diào)制波形中的一種,其產(chǎn)生和接收處理已具備了較為成熟的理論研究。 - With the development of digital technology , getting pulse compression signals with direct digital synthesis has been in general use these days . it is widely used to generate pulse compression signal using dds method
隨著現(xiàn)代數(shù)字技術(shù)的發(fā)展,直接數(shù)字波形合成( dds )的方式獲得脈沖壓縮信號(hào)已為現(xiàn)代雷達(dá)普遍采用。 - Secondly , this dissertation analyses the method of waveform designing and processing for three hybrid pulse compression signals . the combined signals are improved on the characteristic than the single modulation mode
其次,本文分析了三種組合脈沖壓縮信號(hào)的設(shè)計(jì)和處理方法,合成信號(hào)的性能較以前的單一信號(hào)有很大改善。 - With the development of modern digital technology and vlsi , the method of digital waveform synthesis of the pulse compression signals is now widely used in radar systems
現(xiàn)代數(shù)字技術(shù)和vlsi技術(shù)迅猛發(fā)展,波形合成已經(jīng)由傳統(tǒng)的純模擬方法發(fā)展到現(xiàn)在的直接數(shù)字合成,數(shù)字方式獲得脈沖壓縮信號(hào)已成為現(xiàn)代雷達(dá)普遍采用的波形合成方法。 - It's difficult to find pulse compression signal in a sentence. 用pulse compression signal造句挺難的
- Linear frequency modulated ( lfm ) signals as the most popular pulse compression signal are a typical kind of time - varying , nonstationary signals , so applying the wigner - ville distribution into lfm signals has more advantages than conventional methods
雷達(dá)脈沖壓縮技術(shù)中所使用的線性調(diào)頻信號(hào)是一類(lèi)典型的時(shí)變非平穩(wěn)信號(hào)，采用時(shí)頻分析的研究方法處理線性調(diào)頻信號(hào)有著傳統(tǒng)方法無(wú)法比擬的優(yōu)點(diǎn)。 - Second , this dissertation focuses on the error analysis of digital method of the pulse compression signal generation based on lfm signals . the difference and similarity between technique of the direct reading of the stored digital waveform and technique of the direct digital synthesis were also compared
?第二部分以lfm脈壓信號(hào)為基礎(chǔ)，圍繞數(shù)字脈壓波形產(chǎn)生系統(tǒng)的誤差分析展開(kāi)，對(duì)波形存儲(chǔ)直讀法和直接數(shù)字合成法兩種數(shù)字波形產(chǎn)生技術(shù)進(jìn)行全面的分析對(duì)比。 - Except , the error model of orthogonal modulation and double frequency technology were studied . third , the design and implementation of ultra wide band lfm generator were studied . an ultra wide band lfm pulse compression signal generator with 400mhz carrier and 300mhz absolute bandwidth was developed successful
?第三部分在理論分析的基礎(chǔ)上對(duì)超寬帶lfm信號(hào)源系統(tǒng)的設(shè)計(jì)和實(shí)現(xiàn)技術(shù)進(jìn)行研究，成功研制出了中心頻率為400mhz ，帶寬為300mhz ，重復(fù)頻率為1khz ，脈寬為20 s的線性調(diào)頻信號(hào)。 - Third , this dissertation focuses on the error analysis of digital method of the pulse compression signal generation based on lfm signals . except , the error model is established here . fourth , pre - distortion calibration technique is studied and applied to improve signal quality , meanwhile the software is developed
第三部分對(duì)寬帶信號(hào)源模塊系統(tǒng)性能進(jìn)行了分析,給出了系統(tǒng)誤差,介紹了各部分誤差對(duì)系統(tǒng)性能的影響,并建立誤差模型,為后面預(yù)失真技術(shù)提供理論基礎(chǔ)。 - Pulse compression performances of many pulse compression signals are analyzed in frequency domain . and the methods to design kinds ok range sidelobe suppression filters are proposed . this dissertation produced the method to improve parallelism of fft calculation in vliw architecture and a pulse compression procession system in frequency domain based on adsp2106x which had been emulated by using visualdsp + + , and the result is meet the theory
本文主要介紹了使用越來(lái)越廣泛的頻域數(shù)字脈壓處理技術(shù)，分析了各種脈壓信號(hào)的頻域脈壓性能及其旁瓣抑制濾波器設(shè)計(jì)，設(shè)計(jì)了一個(gè)基于adsp2106x芯片的頻域數(shù)字脈壓處理系統(tǒng)，針對(duì)adsp2106x芯片的vliw指令結(jié)構(gòu)，利用芯片的并行運(yùn)算能力提高fft效率，并使用visualdsp + +對(duì)系統(tǒng)進(jìn)行了仿真測(cè)試，結(jié)果與理論相符。