本文關(guān)鍵詞：多模式相控陣?yán)走_(dá)波形產(chǎn)生模塊設(shè)計與實現(xiàn)　出處：《電子科技大學(xué)》2014年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： DDS NIOS II 數(shù)字正交調(diào)制 線性調(diào)頻信號 多相濾波

【摘要】：為應(yīng)對新形式下相控陣?yán)走_(dá)對抗干擾、多目標(biāo)檢測與跟蹤以及超強(qiáng)生存能力的需求,基于直接數(shù)字合成技術(shù)的雷達(dá)波形產(chǎn)生器因其獨特的優(yōu)勢得到快速發(fā)展。這種基于數(shù)字技術(shù)的波形產(chǎn)生器頻率相位控制靈活、穩(wěn)定性高,可編程輸出多模式任意波形,能夠適應(yīng)相控陣?yán)走_(dá)多種工作環(huán)境,因此對多模式雷達(dá)數(shù)字波形產(chǎn)生技術(shù)的研究有迫切的現(xiàn)實需求。本文在深入分析了直接數(shù)字合成技術(shù)的原理和線性調(diào)頻信號的產(chǎn)生技術(shù)的基礎(chǔ)上,完成雙通道獨立參數(shù)控制的多模式波形產(chǎn)生器的方案設(shè)計。該方案基于DDWS技術(shù),采用數(shù)字基帶+數(shù)字正交調(diào)制方案,采用片上系統(tǒng)NIOS II、FPGA和高速DAC完成波形產(chǎn)生模塊的邏輯開發(fā)和硬件設(shè)計,并將設(shè)計的波形產(chǎn)生模塊進(jìn)行硬件調(diào)試、輸出信號指標(biāo)測試與分析。測試結(jié)果證明本設(shè)計模塊實現(xiàn)了雙通道多模式波形輸出。本文的主要工作包括:(1)分析直接數(shù)字合成技術(shù)的原理和誤差模型,介紹線性調(diào)頻信號的產(chǎn)生方法。(2)結(jié)合模塊設(shè)計要求,分析并設(shè)計了基于DDWS的獨立參數(shù)控制的雙通道中頻LFM信號的產(chǎn)生方案。(3)利用NIOS II片上系統(tǒng)的靈活控制和FPGA可編程特點完成雙通道LFM信號產(chǎn)生方案的軟硬件設(shè)計和調(diào)試。(4)在本設(shè)計硬件平臺上完成雙通道多模式波形產(chǎn)生模塊的輸出測試和指標(biāo)分析。
[Abstract]:In order to meet the need of anti-jamming, multi-target detection and tracking and super survivability of phased array radar in the new form. Radar waveform generator based on direct digital synthesis technology has been developed rapidly because of its unique advantages. This kind of waveform generator based on digital technology has flexible frequency phase control and high stability. Programmable output multi-mode arbitrary waveform, can adapt to a variety of phased array radar operating environment. Therefore, there is an urgent need for the research of multi-mode radar digital waveform generation technology. In this paper, the principle of direct digital synthesis technology and linear frequency modulation signal generation technology are deeply analyzed. This scheme is based on DDWS technology, digital baseband digital quadrature modulation scheme and on-chip system NIOS II. FPGA and high-speed DAC complete the logic development and hardware design of waveform generation module, and debug the designed waveform generation module. The output signal index is tested and analyzed. The test results show that the design module realizes the output of the dual-channel multi-mode waveform. The main work of this paper includes the analysis of the principle and error model of the direct digital synthesis technology. This paper introduces the method of generating LFM signal. This paper analyzes and designs a two-channel intermediate frequency LFM signal generation scheme based on independent parameter control based on DDWS. Software and hardware design and debugging of two-channel LFM signal generation scheme based on flexible control of NIOS II on-chip system and FPGA programmable characteristics are implemented. The output test and index analysis of the two-channel multi-mode waveform generation module are completed on the hardware platform of this design.
【學(xué)位授予單位】：電子科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TN958.92

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本文編號：1383508