本文關(guān)鍵詞： 星載 單頻數(shù)據(jù) 周跳探測(cè) 最小二乘 假設(shè)檢驗(yàn)　出處：《測(cè)繪地理信息》2016年04期 　論文類(lèi)型：期刊論文

【摘要】：在星載GPS測(cè)量中,載波相位觀(guān)測(cè)數(shù)據(jù)的周跳探測(cè)是實(shí)現(xiàn)低軌衛(wèi)星高精度定軌的關(guān)鍵,而傳統(tǒng)的周跳探測(cè)方法受低軌衛(wèi)星軌道特性的影響并不能很好地處理星載GPS數(shù)據(jù)。在總結(jié)傳統(tǒng)周跳探測(cè)方法的基礎(chǔ)上研究了一種利用最小二乘及假設(shè)檢驗(yàn)的周跳探測(cè)方法,該方法采用歷元間載波相位差分觀(guān)測(cè)值構(gòu)建觀(guān)測(cè)方程,利用最小二乘求解并建立周跳檢測(cè)量,根據(jù)假設(shè)檢驗(yàn)探測(cè)周跳,適用于采樣率較高條件下的單頻星載GPS載波相位數(shù)據(jù)的周跳探測(cè)。以實(shí)測(cè)星載GPS數(shù)據(jù)周跳探測(cè)試驗(yàn)驗(yàn)證了該方法的有效性,試驗(yàn)結(jié)果表明,當(dāng)可觀(guān)測(cè)的GPS衛(wèi)星數(shù)大于5顆時(shí),該方法能夠探測(cè)出1周左右的周跳,并確定發(fā)生周跳的衛(wèi)星。
[Abstract]:In spaceborne GPS measurement, the cycle slip detection of carrier phase observation data is the key to achieve high precision orbit determination of Leo satellite. However, the traditional cycle slip detection method is not able to deal with spaceborne GPS data well due to the orbit characteristics of Leo satellites. Based on the summary of traditional cycle slip detection methods, a new method based on least squares and hypothesis test is proposed. Cycle slip detection. In this method, the observation equation is constructed by the carrier phase difference observation value between epochs, and the cycle slip detection is established by using the least square method, and the cycle slip is detected according to the hypothesis test. It is suitable for cycle slip detection of single frequency spaceborne GPS carrier phase data under higher sampling rate. The validity of this method is verified by the cycle slip detection test of spaceborne GPS data. The experimental results show that the proposed method is effective. When the number of observable GPS satellites is more than 5, the method can detect the cycle slip of about one week and determine the satellite in which the cycle slip occurs.
【作者單位】： 武漢大學(xué)測(cè)繪學(xué)院;
【分類(lèi)號(hào)】：P228.4
【正文快照】：

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