本文選題：周跳探測與修復(fù) + 電離層殘差　； 參考：《遼寧工程技術(shù)大學(xué)》2013年碩士論文

【摘要】：在衛(wèi)星定位數(shù)據(jù)處理之前,必須要進(jìn)行載波相位觀測值的周跳探測與修復(fù)。國內(nèi)外對GPS周跳探測和修復(fù)的方法研究較多,但沒有萬能的方法。為此,系統(tǒng)研究和分析了GPS周跳探測與修復(fù)的算法,推導(dǎo)了將周跳探測與修復(fù)的單一方法相組合的綜合方法。首先在周跳探測與修復(fù)的基本理論上,系統(tǒng)分析了高次差法、多項(xiàng)式擬合法、電離層殘差法、MW組合法和Blewitt法、小波變換法及時(shí)間序列Bayes等方法適用范圍和探測效果,通過模擬周跳實(shí)驗(yàn)驗(yàn)證了其結(jié)果的可靠性。然后針對單一方法的優(yōu)勢與局限性,提出了小波變換法與神經(jīng)網(wǎng)絡(luò)組合方法以及電離層殘差法、相位減偽距法與MW組合法多方法混合進(jìn)行周跳探測與修復(fù)方法。利用MATLAB平臺(tái)設(shè)計(jì)周跳探測與修復(fù)的系統(tǒng),其具有周跳探測與修復(fù)方便、直觀和處理成果可靠等優(yōu)點(diǎn)。最終完成了GPS實(shí)測數(shù)據(jù)的組合方法實(shí)驗(yàn),實(shí)驗(yàn)表明,電離層殘差法、相位減偽距法與MW組合混合方法進(jìn)行周跳探測與修復(fù),可以有效地探測出1周以上的周跳；對小波變換法與線性神經(jīng)網(wǎng)絡(luò)聯(lián)合探測修復(fù)方法的有效性進(jìn)行了分析,推導(dǎo)出小波可準(zhǔn)確探測出0.5周的周跳,采用神經(jīng)網(wǎng)絡(luò)可以有限的對1周以上周跳進(jìn)行有效地修復(fù)。創(chuàng)并建基于MATLAB平臺(tái)GPS周跳探測與修復(fù)的單一方法及組合方法的系統(tǒng),使其具有一定的理論價(jià)值和較高的應(yīng)用價(jià)值,并對實(shí)際工程具有指導(dǎo)意義。
[Abstract]:The cycle slip detection and repair of carrier phase observations must be carried out before satellite positioning data processing. There are many researches on GPS cycle slip detection and repair methods at home and abroad, but there is no universal method. Therefore, the algorithm of detecting and repairing cycle slip of GPS is studied and analyzed systematically, and the comprehensive method of combining the single method of detecting and repairing cycle slip is deduced. First of all, on the basic theory of cycle slip detection and repair, the application scope and detection effect of high order difference method, polynomial fitting method, ionospheric residual method / MW combination method and Blewitt method, wavelet transform method and time series Bayes method are analyzed systematically. The reliability of the results is verified by simulated cycle slip experiments. Then, aiming at the advantages and limitations of the single method, a new method of cycle slip detection and repair is proposed, which is composed of wavelet transform method and neural network method, ionospheric residual method, phase de-pseudo-range method and MW combination method. The system of cycle slip detection and repair is designed by using MATLAB platform, which has the advantages of convenient detection and repair of cycle slip, intuitionistic and reliable processing results and so on. Finally, the combined method experiment of GPS measured data is completed. The experiment shows that the cycle slip can be detected and repaired effectively by the method of ionospheric residuals, phase de-pseudo-range method and MW combination method, and the cycle slip of more than one week can be detected effectively. The validity of wavelet transform method and linear neural network combined detection and repair method is analyzed. It is deduced that wavelet can accurately detect the cycle slip of 0.5 weeks, and neural network can be used to repair the one-week and last week slip effectively. The system based on the single method and combination method of detecting and repairing cycle slip of MATLAB platform GPS has certain theoretical value and high application value and has guiding significance to practical engineering.
【學(xué)位授予單位】：遼寧工程技術(shù)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2013
【分類號】：P228.4

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本文編號：1921930