Website
Research interest
Satellite geodesy and Physical geodesy
Education
1992 Ph.D. Institute of Geodesy and Geophysics of Chinese Academy of Sciences, Wuhan
1987 M.D. Institute of Mathematics and Physics of Chinese Academy of Sciences, Wuhan
1982 B.D. Zhengzhou Institute of Surveying and Mapping, Zhengzhou
Professional Appointments
2008.09-2008.12 Visiting Professor, Taiwan Jiaotong University
2000.09-2001.05 Visiting professor, Ohio State University, USA
1983.08-1984.07 Visiting Teacher, Beijing University
2006.03-present Professor at GUCAS
1996.12-2006.02 Professor at Zhengzhou University of Information Engineering
1992.12-1996.11 Assistance Professor at Zhengzhou Institute of Surveying and Mapping
1982.08-1992.11 Teacher at Zhengzhou Institute of Surveying and Mapping
Courses
Satellite Orbit and Its observation
Theories about satellite orbit and its observation methods are discussed. Main topics include two-body problem, general disturbance theories of orbit, various disturbance elements of orbit, main observation methods about satellite, and location of satellite from observation.
Mathematical and Physical Equations in Earth Sciences and Their Computational Methods
This course is a fundamental one for students in Earth sciences. Main topics involve wave equation, heat equation, harmonic equation, spherical harmonic function, and difference methods to these equations.
Seminar in Satellite Gravity
A graduate seminar that discusses main methods of recovering the gravity field from satellite observations. Main topics include how to establish normal system of equations from observations, especially, to discuss methods dealing with CHAMP, GRACE, and GOCE data.
Selected publications
Yu J. and Wan X., (2011), Reduction for gradiometry and the corresponding imitation, Chinese J. Geophy., 54: 1182-1186.
Yu J., Wan X., and Zeng Y., (2011), The integral formulas of the associated Legendre
Functions, J. Geodesy, DOI 10.1007/s00190-011-0529-0.
Yu J. and Zhao D., (2010), The gravitational gradient tensor’s invariants and the related boundary conditions, Sci. in China (D), 53: 781-790.
Yu J. and Peng F., (2007), Variational solution about over-determined geodetic boundary value problem and its related theories, Sci. in China (D), 50: 555-562.
Yu J. and Zhang C., (2005), Spherical harmonic series method to altimetry boundary value problem, Chi. J. Geophy., 48: 561-566.
Yu J. and Zhang C., (2004), Integral solution of Dirichlet boundary value problem with the ellipsoid boundary under the accuracy of O(T2), Chinese J. Geophy., 47: 86-93.
Yu J. and Zhang C., (2003), The GPS- gravimetric boundary value problem, Sci. in China (D), 33: 398-405.
Yu J., Jekeli C., and Zhu M., (2003), Analytical solutions of the Dirichlet and Neumann boundary value problems with an ellipsoidal boundary, J. Geodesy, 76: 653-667.
Yu J., Zhu Z., and Peng F., (2001), Wavelet algorithm about g1-term in Molodensky problem, Chinese J. Geophy., 44: 112-119.
Yu J., (1998), Harmonic extension based on Runge’s theory and the corresponding boundary value problems, Sci. in China (D), 28: 532-538 (in Chinese).
Yu J., and Wu X., (1997), The solution of mixed boundary value problems with the reference ellipsoid as boundary, J. Geodesy, 71: 454-460.
Yu J., and Zhu Z., (1997), The boundary value problem of Poisson equation with Stokes boundary condition, Sci. in China (D), 27: 322-328.
Yu J., and Chao H., (1996), Elliptical harmonic series and the original Stokes problem with the boundary of the reference ellipsoid, J. Geodesy, 70: 431-439.
Yu J., and Zhu Z., (1994), Nonlinear fixed-gravimetric boundary value problem, Sci. in China (B), 24: 294-302 (in Chines).
Zhu Z., and Yu, J., (1992), Pseudo-solution on geodetic over-determined boundary value problems, Sci. in China (B), 22: 697-708.
Yu, J., (1988), Partial regularity in the calculus of variations under quasi-convex conditions, Chinese. Quarterly J. of Math., 3: 13-24.
