基于改进EEMD和LSSVM的单频周跳探测与修复方法

doi:10.3969/j.issn.1000-1158.2019.03.23

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Abstract To solve the problem that it is difficult to detect and repair the small cycle-slip, a method which uses modified EEMD to detect the cycle-slip and uses LSSVM to repair the cycle-slip is proposed. First, pseudorange and carrier-phase measurements are used to construct the cycle-slip detectable quantity; Second, the quantity is decomposed by MEEMD; as a result, it can obtain some intrinsic mode functions (IMF). Choose the IMFs which possessed relatively high correlativity with the detectable quantity to do the analysis use Hilbert. And the Hilbert modulus maximum is applied to judge if the cycle-slip appeared and its epoch. Finally, the value at these epochs for every IMFs whose correlation is high is predicted by the LSSVM. Compare the predictive value with the real value and the cycle-slip can be repaired. The experiments show that this method can successfully detect and repair the cycle-slip as small as one cycle.

Key words： metrology cycle-slip detection GPS carrier phase MEEMD cycle-slip reparation LSSVM

Received: 12 April 2018 Published: 19 April 2019

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TB973

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	Articles by authors
	ZHU Jiang-miao
	YAN Di
	GAO Yuan
	CHEN Ye
	WANG Xing

Cite this article:

ZHU Jiang-miao,YAN Di,GAO Yuan, et al. The Method for Single-frequency Cycle-slip Detection and Reparation Based on Modified EEMD and LSSVM[J]. Acta Metrologica Sinica, 2019, 40(3): 491-497.

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http://jlxb.china-csm.org:81/Jwk_jlxb/EN/10.3969/j.issn.1000-1158.2019.03.23 OR http://jlxb.china-csm.org:81/Jwk_jlxb/EN/Y2019/V40/I3/491

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