【摘要】：現(xiàn)代化后的美國(guó)GPS，俄羅斯的GLONASS、中國(guó)的COMPASS以及歐洲的Galileo等全球衛(wèi)星導(dǎo)航系統(tǒng)均設(shè)計(jì)采用多個(gè)頻率，多頻信號(hào)可以形成更多具有優(yōu)良特性的數(shù)據(jù)組合，為載波相位的周跳探測(cè)提供了更多選擇。本文在單頻和雙頻周跳探測(cè)與修復(fù)方法研究的基礎(chǔ)之上，基于三頻數(shù)據(jù)能形成長(zhǎng)波長(zhǎng)、消電離層/弱電離層、低噪聲等優(yōu)良特性的組合，對(duì)GNSS現(xiàn)代化后的三頻周跳探測(cè)與修復(fù)提出了兩種新的方法：選取兩組相位無幾何距離組合(-1,-1,2)和(-1,4,-3),在200周內(nèi)可以探測(cè)出除敏感周跳外的所有周跳，但探測(cè)出的組合周跳值不能固定為整數(shù)，也無法進(jìn)行基礎(chǔ)載波上的周跳值分離，用一個(gè)三階多項(xiàng)式擬合L1、L2和L5的頻間單差值，這四組方程按照間接平差原理，可以探測(cè)出各個(gè)頻率上大于或等于1周的周跳，這種方法適用于高采樣率下的周跳探測(cè)；基于相位減偽距組合周跳探測(cè)的原理，提出了一種三頻組合周跳檢測(cè)量的優(yōu)選方法，并利用該方法在不同偽距測(cè)量噪聲情況下，選取3個(gè)最優(yōu)的線性無關(guān)相位組合，組合檢驗(yàn)量可以準(zhǔn)確探測(cè)出各個(gè)頻率上大于或等于1周的周跳。 對(duì)IGS網(wǎng)站L5NetR8Test測(cè)試站的三頻原始觀測(cè)數(shù)據(jù)進(jìn)行周跳探測(cè)，，采樣間隔為15s，未發(fā)現(xiàn)周跳，分別加入模擬的大周跳、小周跳和不敏感周跳或特殊周跳，兩種方法均正確探測(cè)出了模擬周跳。相位無幾何距離組合最多形成兩組線性無關(guān)的組合，由于15s采樣間隔多項(xiàng)式擬合頻間單差誤差最大可達(dá)0.6周，可能會(huì)引起取整錯(cuò)誤。三頻相位減偽距組合的周跳估值標(biāo)準(zhǔn)差為0.2周左右，即使在偽距測(cè)量噪聲為3m的情況下，仍然能以95.5%的概率對(duì)組合周跳取整成功。
[Abstract]:Global satellite navigation systems, such as the modernized GPS in the United States, GLONASS in Russia, COMPASS in China and Galileo in Europe, are designed with multiple frequencies, and multi-frequency signals can form more data combinations with excellent characteristics. It provides more choices for cycle slip detection of carrier phase. In this paper, on the basis of the research on the detection and repair methods of single-frequency and dual-frequency cycle slips, based on the three-frequency data, we can form a combination of long wavelength, ionospheric / weak ionosphere, low noise and so on. Two new methods for detecting and repairing tri-frequency cycle slips after GNSS modernization are proposed: selecting two sets of phase-free geometric distance combinations (-1n ~ (-1) ~ (2) and (-1) ~ (4) ~ (-3), all cycle slips except sensitive cycle slips can be detected in 200 weeks. However, the detected combined cycle slip can not be fixed as an integer, nor can it be separated from the cycle slip on the base carrier. A third-order polynomial is used to fit the single frequency difference between L _ 1N _ 2 and L _ 5. The four equations are based on the principle of indirect adjustment. The cycle slips larger than or equal to one cycle at each frequency can be detected. This method is suitable for cycle slip detection at high sampling rate, and based on the principle of phase de-pseudo-range combined cycle slip detection, an optimal method for detecting three-frequency combined cycle slip detection is proposed. Using this method, three optimal linearly independent phase combinations are selected in the case of different pseudo-range noise measurements, and the combined tests can accurately detect the cycle slips which are greater than or equal to one cycle at each frequency. The three-frequency original observation data of L5NetR8Test test station on IGS website were detected by cycle slip. The sampling interval was 15s, no cycle slip was found, and simulated large cycle jump, small cycle jump and insensitive cycle jump or special cycle jump were added respectively. Both methods have correctly detected the simulated cycle slip. Two groups of linearly independent combinations are formed by the combination of phase no geometric distance at most. Because the maximum error of single difference between frequencies fitted by the polynomial of 15 s sampling interval can reach 0.6 weeks, it may cause rounding errors. The estimated standard deviation of cycle slip of tri-frequency phase de-pseudo-range combination is about 0.2 cycles. Even when the noise of pseudo-range measurement is 3m, the cycle slip can still be integrated successfully with a probability of 95.5%.
【學(xué)位授予單位】：遼寧工程技術(shù)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2013
【分類號(hào)】：P228.4

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 徐園;楊力;耿彥龍;;基于多頻載波/偽距數(shù)據(jù)組合進(jìn)行周跳探測(cè)與修復(fù)的實(shí)現(xiàn)[J];測(cè)繪工程;2012年03期

2 范建軍;王飛雪;郭桂蓉;;GPS三頻非差觀測(cè)數(shù)據(jù)周跳的自動(dòng)探測(cè)與改正研究[J];測(cè)繪科學(xué);2006年05期

3 李明;高星偉;徐愛功;;一種改進(jìn)的周跳多項(xiàng)式擬合方法[J];測(cè)繪科學(xué);2008年04期

4 王仁謙,朱建軍;利用雙頻載波相位觀測(cè)值求差的方法探測(cè)與修復(fù)周跳[J];測(cè)繪通報(bào);2004年06期

5 汪平;郝金明;劉偉平;沈國(guó)康;;使用多頻組合觀測(cè)值探測(cè)與修復(fù)周跳[J];測(cè)繪通報(bào);2009年06期

6 李金龍;楊元喜;徐君毅;何海波;郭海榮;;基于偽距相位組合實(shí)時(shí)探測(cè)與修復(fù)GNSS三頻非差觀測(cè)數(shù)據(jù)周跳[J];測(cè)繪學(xué)報(bào);2011年06期

7 韓紹偉;GPS組合觀測(cè)值理論及應(yīng)用[J];測(cè)繪學(xué)報(bào);1995年02期

8 蔡詩響;張小紅;李星星;梁寅;;一種基于多項(xiàng)式擬合的單頻周跳探測(cè)改進(jìn)方法[J];測(cè)繪信息與工程;2009年05期

9 陳品馨;章傳銀;黃昆學(xué);;用相位減偽距法和電離層殘差法探測(cè)和修復(fù)周跳[J];大地測(cè)量與地球動(dòng)力學(xué);2010年02期

10 陳宇;白征東;原波;;整數(shù)規(guī)劃在三頻組合觀測(cè)值確定中的應(yīng)用[J];大地測(cè)量與地球動(dòng)力學(xué);2010年06期

相關(guān)博士學(xué)位論文 前1條

1 于興旺;多頻GNSS精密定位理論與方法研究[D];武漢大學(xué);2011年

本文編號(hào)：2131466