In this paper , firstly , radar pulse compression is introduced briefly , summarize three primary pulse compression signals : lfm , nlfm , pcm 本文首先對雷達脈沖壓縮的原理作了簡要的介紹,進一步詳細分析了應用最廣泛的線性調(diào)頻信號,并簡要介紹了非線性調(diào)頻信號和相位編碼信號。
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)頻信號作為一種典型的脈壓信號,同時也是超寬帶雷達調(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已為現(xiàn)代雷達普遍采用。
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的設計和處理方法,合成信號的性能較以前的單一信號有很大改善。
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)字技術和vlsi技術迅猛發(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已成為現(xiàn)代雷達普遍采用的波形合成方法。