本文關(guān)鍵詞： 全球定位導(dǎo)航系統(tǒng) 抗干擾 干擾參數(shù)估計(jì) IIR陷波器　出處：《河北師范大學(xué)》2017年碩士論文　論文類型：學(xué)位論文

【摘要】：全球定位系統(tǒng)(Global Position System,GPS),是一種定時(shí)和測距的空間交會(huì)定點(diǎn)導(dǎo)航系統(tǒng),用于測量運(yùn)動(dòng)載體的速度、三維位置和時(shí)間。導(dǎo)航信息通過無線電的方式進(jìn)行傳遞,在傳遞過程中會(huì)遇到各種類型以及各種強(qiáng)度的干擾。一旦有干擾摻雜到有用信號(hào)中,則導(dǎo)航接收機(jī)無法解算出正確的導(dǎo)航信息。同時(shí),由于衛(wèi)星導(dǎo)航系統(tǒng)的廣泛使用,使得對(duì)該系統(tǒng)的抗干擾技術(shù)的研究迫在眉睫。本文主要針對(duì)GPS接收機(jī)自適應(yīng)干擾抑制的問題做出研究,主要以一定帶寬的干擾、單頻窄帶干擾為模型,這類干擾常常被GPS接收機(jī)所接收,且干擾強(qiáng)度大,影響力強(qiáng)。文章首先敘述了GPS系統(tǒng)的脆弱性以及系統(tǒng)應(yīng)用的廣泛性,點(diǎn)明GPS接收機(jī)抗干擾的重要性。分析了國內(nèi)外在抗干擾領(lǐng)域的研究,一方面闡述了對(duì)干擾參數(shù)估計(jì)的研究,另一方面闡述時(shí)域干擾抑制和頻域干擾抑制的方法。其次,討論了GPS導(dǎo)航信號(hào)模型和信號(hào)特點(diǎn),并對(duì)常見干擾模型進(jìn)行分析。針對(duì)頻域自適應(yīng)干擾抑制算法研究。首先提出自適應(yīng)門限準(zhǔn)確確定的必要性,采用對(duì)GPS導(dǎo)航信號(hào)加窗的手段來處理信號(hào)在變換域頻譜泄漏等問題,分析了常用的五種窗函數(shù),通過主瓣寬度、最大旁瓣幅值以及旁瓣衰減速度來選取合適的窗函數(shù),為了優(yōu)化窗函數(shù)的性能,考慮窗函數(shù)的重疊加窗,該算法對(duì)本文GPS信號(hào)截取有明顯的優(yōu)化效果。其次,選擇最佳門限,采用對(duì)整體信號(hào)系統(tǒng)的特性分析,根據(jù)隨機(jī)信號(hào)實(shí)用分布律來得出干擾檢測門限,通過分析干擾譜線,準(zhǔn)確估計(jì)干擾參數(shù)。使用頻域置零法,對(duì)比不同類型干擾的抑制效果,本文對(duì)該算法進(jìn)行仿真,得到有效的驗(yàn)證。針對(duì)時(shí)域自適應(yīng)干擾抑制算法研究。本文提出了自適應(yīng)時(shí)域陷波的算法模型。首先,分析了一階復(fù)數(shù)型IIR陷波器和二階直接型IIR陷波器的陷波特性,比較低階IIR陷波器與高階IIR陷波器的特點(diǎn)。隨后,通過陷波器級(jí)聯(lián)的特點(diǎn),提出了兩種陷波器級(jí)聯(lián)方式,分別為陷波器串行級(jí)聯(lián)和陷波器高階級(jí)聯(lián)。對(duì)兩種級(jí)聯(lián)方式分別進(jìn)行干擾抑制以及輸出信干噪比的仿真,得出兩種級(jí)聯(lián)方法的更優(yōu)算法。此外,從輸出信干噪比探討了干擾帶寬、陷波帶寬和陷波器級(jí)聯(lián)個(gè)數(shù)三者之間的關(guān)系,從硬件設(shè)計(jì)和節(jié)約資源的角度來選擇陷波器級(jí)聯(lián)的個(gè)數(shù)。采用時(shí)域陷波算法進(jìn)行干擾信號(hào)抑制,通過仿真驗(yàn)證算法的有效性。最后,可在理論上分析出,通過將時(shí)域與頻域結(jié)合起來,檢測出干擾類型,對(duì)其進(jìn)行抑制,達(dá)到更好地干擾抑制效果。隨著近幾年航天技術(shù)的發(fā)展,中國、俄羅斯等國家均在建設(shè)或完善自己的全球?qū)Ш蕉ㄎ幌到y(tǒng),其都是基于衛(wèi)星的導(dǎo)航定位系統(tǒng)原理。因此,在相對(duì)成熟的GPS系統(tǒng)基礎(chǔ)上研究其干擾和抗干擾的問題,對(duì)我國“北斗”系統(tǒng)的建設(shè)與完善是很有必要的。
[Abstract]:Global Position system GPS, a fixed point navigation system for timing and ranging, is used to measure the speed, three-dimensional position and time of a moving carrier. Navigation information is transmitted by radio. In the course of transmission, interference of various types and intensities is encountered. Once interference is mixed into useful signals, the navigation receiver cannot solve the correct navigation information. At the same time, due to the wide use of satellite navigation systems, It is urgent to study the anti-jamming technology of the system. This paper mainly focuses on the problem of adaptive interference suppression of GPS receiver, mainly based on the interference of a certain bandwidth and single-frequency narrowband interference. This kind of interference is often received by the GPS receiver, and the interference is strong and powerful. This paper first describes the vulnerability of the GPS system and the wide application of the system. The importance of GPS receiver anti-jamming is pointed out. The research in the field of anti-jamming at home and abroad is analyzed. On the one hand, the research of interference parameter estimation, on the other hand, the methods of time-domain interference suppression and frequency-domain interference suppression are expounded. The GPS navigation signal model and signal characteristics are discussed, and the common interference models are analyzed. The necessity of accurate determination of adaptive threshold is put forward for the study of adaptive interference suppression algorithm in frequency domain. The GPS navigation signal is windowed to deal with the signal leakage in the transform domain, and five window functions are analyzed. The proper window function is selected by the main lobe width, the maximum sidelobe amplitude and the sidelobe attenuation speed. In order to optimize the performance of the window function, the superposition window of the window function is considered. The algorithm has obvious optimization effect on the interception of the GPS signal in this paper. Secondly, the optimal threshold is selected and the characteristics of the whole signal system are analyzed. According to the practical distribution law of random signals, the threshold of interference detection is obtained, and the interference parameters are accurately estimated by analyzing the interference spectral lines. By using the frequency domain zeroing method, the suppression effect of different types of interference is compared, and the algorithm is simulated in this paper. The algorithm model of adaptive time-domain notch is proposed. Firstly, the trapping characteristics of first-order complex IIR notch and second-order direct IIR notch are analyzed. The characteristics of low order IIR notch and high order IIR notch are compared. Then, through the characteristics of notch concatenation, two kinds of notch concatenation modes are proposed. The two cascades are serially concatenated and high-order cascaded respectively. The simulation of interference suppression and output signal-to-noise ratio of the two cascades is carried out, and a better algorithm of the two cascading methods is obtained. The relationship among interference bandwidth, notch bandwidth and the number of notch cascades is discussed from the output signal-to-noise ratio. The number of notch cascades is selected from the point of view of hardware design and resource saving. The time domain notch algorithm is used to suppress the interference signal. The effectiveness of the algorithm is verified by simulation. Finally, it can be theoretically analyzed that, by combining time domain with frequency domain, the interference type can be detected and suppressed. With the development of space technology in recent years, China, Russia and other countries are building or perfecting their global navigation and positioning systems, which are all based on the principle of satellite-based navigation and positioning systems. It is necessary for the construction and perfection of Beidou system in our country to study the interference and anti-interference of GPS system.
【學(xué)位授予單位】：河北師范大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：P228.4

【相似文獻(xiàn)】

相關(guān)期刊論文 前10條

1 丁大宇;;一種新的數(shù)字陷波器[J];海南大學(xué)學(xué)報(bào)(自然科學(xué)版);1988年04期

2 潘欣裕;趙鶴鳴;陳雪勤;;修正自適應(yīng)格型陷波器及其應(yīng)用[J];聲學(xué)技術(shù);2007年06期

3 ;克服高壓線感應(yīng)的雙T陷波器[J];石油地球物理勘探;1976年04期

4 ;自動(dòng)頻率跟蹤陷波器[J];石油物探;1978年02期

5 陳振生,胡詠梅,劉伯強(qiáng);自動(dòng)跟蹤工頻陷波器的研制[J];山東科學(xué);1997年02期

6 李振杰,韓豐田,姬中華;陷波器對(duì)系統(tǒng)穩(wěn)定性影響的分析[J];河南科學(xué);2005年04期

7 劉洋;陸勤龍;陳宇鵬;楊時(shí)紅;黃振輝;汪名峰;史亞彬;左濤;;無調(diào)諧窄帶超導(dǎo)陷波器研制技術(shù)[J];低溫與超導(dǎo);2012年03期

8 王本吉;狄?guī)妥?;窄帶自動(dòng)跟蹤陷波器[J];石油地球物理勘探;1985年04期

9 宋祈真;;輸電線對(duì)地震勘探的干擾及排除[J];石油地球物理勘探;1979年04期

10 周一青,胡愛群;自適應(yīng)陷波器實(shí)際性能的理論分析及其在繼電保護(hù)信號(hào)接收中的應(yīng)用[J];應(yīng)用科學(xué)學(xué)報(bào);2000年04期

相關(guān)會(huì)議論文 前6條

1 鄭茂林;諶貴和;李濤;;調(diào)諧陷波器的設(shè)計(jì)[A];2005'全國微波毫米波會(huì)議論文集（第一冊(cè)）[C];2006年

2 陳霽;管慶;;聲反饋抑制中的陷波器設(shè)計(jì)[A];2006中國西部青年通信學(xué)術(shù)會(huì)議論文集[C];2006年

3 楊堅(jiān);奚宏生;李靖;衛(wèi)星;;基于陷波器的自適應(yīng)直接復(fù)頻率估計(jì)算法[A];第二十六屆中國控制會(huì)議論文集[C];2007年

4 張世平;趙永平;沈國鋒;張紹卿;;用IIR格型陷波器消除信號(hào)中低頻干擾的研究[A];中國儀器儀表學(xué)會(huì)第五屆青年學(xué)術(shù)會(huì)議論文集[C];2003年

5 石堅(jiān);楊永明;張占龍;;50Hz陷波器在腦電檢測系統(tǒng)中的應(yīng)用[A];電工理論與新技術(shù)2004年學(xué)術(shù)研討會(huì)論文集[C];2004年

6 王勇;易克初;;一種自適應(yīng)復(fù)數(shù)陷波器及其在通信抗干擾中的應(yīng)用[A];現(xiàn)代通信理論與信號(hào)處理進(jìn)展——2003年通信理論與信號(hào)處理年會(huì)論文集[C];2003年

相關(guān)重要報(bào)紙文章 前3條

1 張達(dá);雙T型陷波器[N];電子報(bào);2011年

2 徐馳 摘譯;去除交流聲的陷波器[N];電子報(bào);2011年

3 山東 李福芹;加裝陷波器排除干擾信號(hào)[N];電子報(bào);2004年

相關(guān)碩士學(xué)位論文 前10條

1 王雪艷;微波均衡器的設(shè)計(jì)與研究[D];電子科技大學(xué);2014年

2 張忠;零極點(diǎn)配對(duì)的高階復(fù)數(shù)陷波器FPGA實(shí)現(xiàn)及其應(yīng)用[D];西安電子科技大學(xué);2014年

3 游海;基于自適應(yīng)陷波器的科氏流量計(jì)信號(hào)頻率估計(jì)方法研究[D];重慶大學(xué);2016年

4 張鑫;GPS接收機(jī)自適應(yīng)干擾抑制關(guān)鍵技術(shù)研究[D];河北師范大學(xué);2017年

5 高瑋;基于時(shí)間尺度變換—自適應(yīng)陷波器的動(dòng)態(tài)相量測量方法[D];西南交通大學(xué);2011年

6 王莉萍;基于自適應(yīng)陷波器的航空電源同步信號(hào)提取方法研究[D];重慶大學(xué);2012年

7 郭磊;基于自適應(yīng)陷波器的微電網(wǎng)信息提取及應(yīng)用[D];燕山大學(xué);2013年

8 解朦朦;基于復(fù)數(shù)自適應(yīng)陷波器的窄帶干擾抑制研究與FPGA實(shí)現(xiàn)[D];西安電子科技大學(xué);2014年

9 鞠洪兵;基于陷波器的有源電力濾波器的研究與設(shè)計(jì)[D];山東大學(xué);2010年

10 侯顏平;色噪聲中基于IIR陷波器的信號(hào)檢測方法研究[D];西北工業(yè)大學(xué);2007年

，

本文編號(hào)：1555721