Abstract
Aiming at the problem of Compass tri-frequency carrier phase observation cycle slip is difficult to detect and repair, this paper puts forward tri-frequency geometry-free phase and the ionosphere residual method for cycle slip detection and repair. Firstly, using the tri-frequency geometry-free phase method to construct the estimation of combined cycle slip, and choosing the two relatively optimal estimation of combined cycle slip; Secondly, according to the tri-frequency ionosphere residual method to select the third estimation of combined cycle slip; Finally, The simultaneous equation and search for matching the minimum 1 norm as the standard cycle slip value to repair cycle slip. After simulations based on different sampling rate observations, the results have showed that the method for high sampling rate (under 5s) of BDS tri-frequency observation data is more effective to detect and repair cycle slip.
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