The confirmation of gravitational waves in recent years has set off a new upsurge of
exploring the extreme interactions critical to the origin and evolution of stars, galaxies, and …

This paper investigates the reconstruction and maintenance of the inner-formation system
for an innovative drag-free spacecraft with double spherical test masses in consideration of …

In recent years, the drag-free satellites have been widely used for some fundamental
physical experiments, such as checking short-range effects of general relativity, geopotential …

A new relative orbit estimation method and practical control scheme for satellite formation
keeping is developed. We present the general formation description method based on the …

The maglev vibration isolation system exhibits excellent micro-vibration isolation
performance (0.01 Hz to 100 Hz band) in the space environment. However, a collision …

The inter-satellite electromagnetic forces generated by the magnetic dipoles on neighboring
satellites provide an attractive control actuation alternative for satellite formation flight due to …

In this paper, vision-based relative navigation of two spacecraft is addressed using the
sparse-grid quadrature filter. The relative navigation provides the estimates of the relative …

Modeling of the dynamics and disturbances and designing of the precise formation
controller are two major problems for the inner-formation flying system (IFFS). This paper …

The drag‐free satellites, being space‐borne ultrahigh precise measurement platforms, have
played irreplaceable roles in a great number of space science missions such as navigation …

This paper presents a novel sigma-point unscented predictive filter (UPF) for relative
position and attitude estimation of satellite formation taking into account the influence of J 2 …