【摘要】：無(wú)論是在現(xiàn)代的生活中還是在現(xiàn)代工業(yè)生產(chǎn)中,對(duì)距離的測(cè)量提出了越來(lái)越高的要求,而在很多工作生產(chǎn)自動(dòng)控制與智能系統(tǒng)中,距離的測(cè)量又是不可或缺的。傳統(tǒng)的距離測(cè)量方法已經(jīng)不能滿足各種產(chǎn)場(chǎng)合測(cè)距的需要,距離的自動(dòng)實(shí)時(shí)獲取才是現(xiàn)在所需要的。X波段線性掃頻雷達(dá)具有測(cè)距精確,測(cè)量速度快的優(yōu)點(diǎn),可以廣泛應(yīng)用在汽車(chē)防撞系統(tǒng)、物位雷達(dá)、雷達(dá)高度計(jì)等領(lǐng)域,為生活和工業(yè)生產(chǎn)提供方便。本文完成了一種X波段線性掃頻物位雷達(dá)測(cè)量系統(tǒng)的總體技術(shù)方案論證和硬件系統(tǒng)搭建工作。所設(shè)計(jì)雷達(dá)系統(tǒng)主要用于工業(yè)自動(dòng)化生產(chǎn)中物位的測(cè)量,相對(duì)于現(xiàn)有系統(tǒng)方案,本文所提出的設(shè)計(jì)方案具有高精度、智能化和測(cè)速快等技術(shù)優(yōu)點(diǎn)。在系統(tǒng)硬件實(shí)現(xiàn)工作中,根據(jù)技術(shù)方案,分析選擇了 Virtex-5系列FPGA作為核心處理器件,并以STM32F407作為輔助控制器、HMC703作為核心器件設(shè)計(jì)的線性掃頻源與發(fā)射機(jī)接收機(jī),設(shè)計(jì)加工了硬件系統(tǒng),并在實(shí)驗(yàn)室環(huán)境和外場(chǎng)環(huán)境中進(jìn)行了測(cè)試,實(shí)現(xiàn)了 X波段FMCW物位雷達(dá)設(shè)計(jì)方案中的功能要求。首先,介紹了所研究的線性掃頻物位雷達(dá)的應(yīng)用背景、國(guó)內(nèi)外發(fā)展現(xiàn)狀,分析了X波段線性掃頻物位雷達(dá)的必要性;其次,詳細(xì)描述了 X波段線性掃頻物位雷達(dá)工作原理、測(cè)量方法、擬實(shí)現(xiàn)的功能和技術(shù)要求;再次,根據(jù)線性掃頻雷達(dá)的工作原理設(shè)計(jì)了一種X波段線性掃頻物位雷達(dá)的系統(tǒng)方案,重點(diǎn)論證了發(fā)射機(jī)與接收機(jī)中線性掃頻源、功放、LNA、混頻器與中頻數(shù)字信號(hào)處理模塊的設(shè)計(jì)方法;最后,對(duì)所設(shè)計(jì)X波段線性掃頻物位雷達(dá)原理樣機(jī)進(jìn)行了實(shí)驗(yàn)測(cè)試,獲得了多組數(shù)據(jù),并對(duì)數(shù)據(jù)進(jìn)行了分析與處理;實(shí)驗(yàn)數(shù)據(jù)表明所設(shè)計(jì)的X波段線性掃頻物位雷達(dá),線性掃頻源可以發(fā)射線性度很高的掃頻信號(hào),接收電路可以接收到回波信號(hào),并通過(guò)與發(fā)射信號(hào)混頻得到了與距離相關(guān)的中頻信號(hào),便于后續(xù)數(shù)據(jù)處理。本文設(shè)計(jì)開(kāi)發(fā)的具有較高精度的X波段線性掃頻物位雷達(dá),可以對(duì)進(jìn)一步研制相關(guān)雷達(dá)系統(tǒng)提供一些技術(shù)參考。
[Abstract]:No matter in modern life or in modern industrial production, the measurement of distance has been put forward higher and higher requirements, and in many automatic control and intelligent systems of work and production, distance measurement is indispensable. The traditional range measurement method can no longer meet the needs of ranging in various production situations, and the automatic real-time acquisition of range is needed at present. X-band linear sweep radar has the advantages of accurate ranging and fast measurement speed. It can be widely used in automobile collision avoidance system, level radar, radar altimeter and other fields, which provides convenience for life and industrial production. In this paper, the overall technical scheme demonstration and hardware system construction of an X-band linear sweep radar measurement system are completed. The designed radar system is mainly used for the measurement of material level in industrial automation production. Compared with the existing system scheme, the design scheme proposed in this paper has the technical advantages of high precision, intelligence and fast speed measurement. In the hardware implementation of the system, according to the technical scheme, the Virtex-5 series FPGA is analyzed and selected as the core processing device, and STM32F407 is used as the auxiliary controller and HMC703 as the core device to design the linear sweep source and transmitter receiver. The hardware system is designed and processed, and the test is carried out in the laboratory environment and the external field environment, and the functional requirements of the X-band FMCW level radar design scheme are realized. Firstly, the application background of linear sweep level radar is introduced, and the development status at home and abroad is introduced, and the necessity of X-band linear sweep level radar is analyzed. Secondly, the working principle, measurement method, function and technical requirements of X-band linear sweep radar are described in detail. Thirdly, according to the working principle of linear sweep radar, a system scheme of X-band linear sweep level radar is designed, and the linear sweep source, power amplifier and LNA, in transmitter and receiver are demonstrated in detail. The design method of mixer and if digital signal processing module; Finally, the designed prototype of X-band linear sweep radar is tested, and many sets of data are obtained, and the data are analyzed and processed. The experimental data show that the designed X-band linear sweep radar can send the sweep signal with high radiality, and the receiving circuit can receive the echo signal. The intermediate frequency signal related to distance is obtained by mixing with the transmitted signal, which is convenient for subsequent data processing. The X-band linear sweep level radar with high accuracy designed and developed in this paper can provide some technical references for the further development of related radar systems.
【學(xué)位授予單位】：哈爾濱工程大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類(lèi)號(hào)】：TN957.51

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本文編號(hào)：2478752