  The core aspects and latest developments of Manoeuvre Intelligence for Space
Safety (MISS), a new software tool for collision avoidance analysis and design,
are presented. The tool leverages analytical and semi-analytical methods for
the efficient modelling of the orbit modifications due to different control
strategies, such as impulsive or low-thrust manoeuvres, and maps them into
displacements at the nominal close approach using relative motion equations.
B-plane representations are then used to separate the phasing-related and
geometry-related components of the displacement. Both maximum miss distance and
minimum collision probability collision avoidance manoeuvres are considered.
The tool also allows for the computation of state transition matrices and
propagation of uncertainties. Several test cases are provided to assess the
capabilities and performance of the tool.
