Interacting Multiple Mode Estimation for Space Object Characterisation
- Paper number
IAC-17,A6,9,7,x36938
- Year
2017
- Abstract
As the number of space objects performing orbital manoeuvres has been increasing, the timely detection of the manoeuvre along with orbit characterisation has become crucial for space situational awareness. In this paper, an algorithm to detect and characterise manoeuvring space objects are proposed based on the interacting multiple model estimation. It is assumed that the types of possible manoeuvres are finite and each manoeuvre is characterised by resulting change in the orbital elements. Under the assumption, the manoeuvring space objects are modelled as a nonlinear system having multiple modes, each of which describes the space object’s motion subject to the corresponding orbital elements. Through the interacting multiple model estimation, the mode probabilities that represents how likely each mode is currently in operation are computed. The manoeuvre detection and orbit characterisation are then performed simultaneously by identifying the mode with the highest mode probability. The effectiveness of the algorithm is demonstrated through numerical simulations.
- Abstract document
- Manuscript document
(absent)