4 papers · 1 filter
DebrisWatch II: Digging deeper for geosynchronous debris
James A. Blake, Benjamin F. Cooke, Cristina Paragini +27
The geosynchronous (GSO) debris environment is continually evolving. Regular monitoring of the region is consequently of great importance, though the trade-off between coverage and…
Robust Angles-Only Initial Relative Orbit Determination Using Polynomial Optimization
Xingyu Zhou, Malcolm Macdonald, Roberto Armellin +2
This paper develops a robust angles-only IROD method based on polynomial optimization for arbitrary nonlinear dynamics. First, the relative motion is approximated by high-order Tay…
Single-Impulse Reachable Set in Arbitrary Dynamics Using Polynomials
Xingyu Zhou, Roberto Armellin, Dong Qiao +1
This paper presents a method to determine the reachable set (RS) of spacecraft after a single velocity impulse with an arbitrary direction, which is appropriate for the RS in both…
Time-Varying Directional State Transition Tensor for Orbit Uncertainty Propagation
Xingyu Zhou, Roberto Armellin, Dong Qiao +1
The directional state transition tensor (DSTT) reduces the complexity of state transition tensor (STT) by aligning the STT terms in sensitive directions only, which provides compar…