We pose and solve the analogue of Slepian's time-frequency concentration problem on the
surface of the unit sphere to determine an orthogonal family of strictly bandlimited functions …

It is often advantageous to investigate the relationship between two geophysical data sets in
the spectral domain by calculating admittance and coherence functions. While there exist …

This work demonstrates a comprehensive methodology for capture, analysis, manipulation,
and reproduction of spatial sound-radiation. As the challenge herein, acoustic events need …

时变重力场是研究地球系统内部物质运动和时空演化过程的有效途径. 目前广泛使用的GRACE
时变重力场模型受限于其空间分辨率(约400 km), 难以探测较小空间尺度的重力变化 …

The estimation of potential fields such as the gravitational or magnetic potential at the
surface of a spherical planet from noisy observations taken at an altitude over an incomplete …

Potential fields are classically represented on the sphere using spherical harmonics.
However, this decomposition leads to numerical difficulties when data to be modelled are …

摘要融合多源数据的高精度, 高分辨率的局部重力场建模是物理大地测量学的前沿和热点问题.
本文研究了基于径向基函数融合多源数据的局部重力场建模方法, 利用Monte Carlo …

We address the problem of estimating the spherical-harmonic power spectrum of a
statistically isotropic scalar signal from noise-contaminated data on a region of the unit …

It is a well-known fact that mathematical functions that are timelimited (or spacelimited)
cannot be simultaneously bandlimited (in frequency). Yet the finite precision of …

The time-variable gravity field (TVGF) provides an effective means of measuring the
temporal and spatial variations of the mass redistribution within the Earth system. The widely …