發(fā)布時(shí)間：2018-10-23 17:00

【摘要】：隨著GPS全球定位系統(tǒng)在軍事和民用領(lǐng)域越來(lái)越廣泛的應(yīng)用，它容易被干擾的問(wèn)題顯得日益嚴(yán)重。由于干擾的影響，GPS接收機(jī)性能變得不穩(wěn)定甚至完全失效。為了使GPS接收機(jī)能在干擾環(huán)境下正常工作，進(jìn)行抗干擾GPS接收系統(tǒng)的研究就勢(shì)在必行。 本文在概述了GPS的工作原理以及目前常用的抗干擾的手段的基礎(chǔ)上，基于功率倒置算法抗干擾分析了接收系統(tǒng)的技術(shù)要求，結(jié)合軟件無(wú)線電的基本理論知識(shí)，設(shè)計(jì)了GPS智能天線信號(hào)采集與處理實(shí)驗(yàn)系統(tǒng)，實(shí)驗(yàn)系統(tǒng)的總體硬件框架包括天線、微波網(wǎng)絡(luò)、NI采集設(shè)備，實(shí)驗(yàn)系統(tǒng)軟件部分包括基于LabVIEW平臺(tái)的數(shù)字信號(hào)處理單元與GPS軟件接收機(jī)，其中重點(diǎn)介紹了實(shí)驗(yàn)系統(tǒng)軟件部分的實(shí)現(xiàn)方法。最后對(duì)系統(tǒng)功能進(jìn)行了調(diào)試和驗(yàn)證，系統(tǒng)功能完整，工作正常能夠滿足實(shí)驗(yàn)處理系統(tǒng)的要求。 綜上所述，，本文基于軟件無(wú)線電思想，結(jié)合GPS定位原理設(shè)計(jì)和實(shí)現(xiàn)了GPS智能天線的信號(hào)采集與處理實(shí)驗(yàn)系統(tǒng)。
[Abstract]:With the increasing application of GPS in military and civilian fields, the problem of easy interference becomes more and more serious. Because of interference, the performance of GPS receiver becomes unstable or even completely invalid. In order to make the GPS receiver work normally in the jamming environment, it is imperative to study the anti-jamming GPS receiver system. On the basis of summarizing the working principle of GPS and the commonly used anti-jamming methods, this paper analyzes the technical requirements of the receiving system based on the power inversion algorithm, and combines the basic theoretical knowledge of software radio. The GPS smart antenna signal acquisition and processing experiment system is designed. The overall hardware frame of the experiment system includes antenna, microwave network, NI acquisition equipment. The software part of the experiment system includes the digital signal processing unit based on LabVIEW platform and the GPS software receiver. The implementation method of the software part of the experimental system is introduced emphatically. Finally, the system function is debugged and verified. The system function is complete and can meet the requirements of the experimental processing system. To sum up, based on the idea of software radio and the principle of GPS positioning, the signal acquisition and processing experiment system of GPS smart antenna is designed and implemented.
【學(xué)位授予單位】：華中科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2013
【分類(lèi)號(hào)】：P228.4;TN911.7

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