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Nijia Qian, Guobin Chang*, Jingxiang Gao, Cheng Pan, et al. (2021). Vehicle's Instantaneous Velocity Reconstruction by Combining GNSS Doppler and Carrier Phase Measurements through Tikhonov Regularized Kernel Learning[J].IEEE Transactions on Vehicular Technology,2021,70(5):4190-4202
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Nijia Qian, Guobin Chang*, Jingxiang Gao. (2020). Smoothing for continuous dynamical state space models with sampled system coefficients based on sparse kernel learning[J].Nonlinear Dynamics,2020,100(4):3597-3610
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Nijia Qian, Guobin Chang*. (2021). Optimal filtering for state space model with time-integral measurements[J].Measurement,2021,176
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Nijia Qian, Guobin Chang*, Pavel Ditmar, Jingxiang Gao, et al. (2022). Sparse DDK: A Data-Driven Decorrelation Filter for GRACE Level-2 Products[J].Remote Sensing,2022,14(12)
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Nijia Qian, Guobin Chang*, Jingxiang Gao, et al. (2022). Adaptive DDK filter for GRACE time-variable gravity field with a novel anisotropic filtering strength metric[J].remote sensing,2022,14(13)
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Nijia Qian, Jingxiang Gao*, Zengke Li, et al. (2020). GPS/BDS triple-frequency cycle slip detection and repair algorithm based on adaptive detection threshold and FNN-derived ionospheric delay compensation[J].Acta Geodynamica et Geomaterialia,2020,17(2):141-156
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Nijia Qian, Guobin Chang*, Jingxiang Gao. (2020). GNSS pseudo-range and time-differenced carrier phase measurements least-squares fusion algorithm and steady performance theoretical analysis[J].Electronics Letters,2019,55(23):1238-1241
