PD ISO/TR 16158:2013

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Collision avoidance workflow
5 Perceiving close approaches
6 Determining potential collisions for warning and
   further action (close approach screening)
7 Probability of survival
8 Additional information for judging courses of action
9 Consequence assessment
10 Requirements for warning and information for
   avoidance
11 Conjunction and collision assessment work flow
   and operational concept
Bibliography

Provides some widely used techniques for perceiving close approaches, estimating collision probability, estimating the cumulative probability of survival, and manoeuvring to avoid collisions.

This Technical Report is a guide for establishing essential collaborative enterprises to sustain the space environment and employ it effectively. This requires diligent collaboration among all who operate satellites.

This Technical Report describes some widely used techniques for perceiving close approaches, estimating collision probability, estimating the cumulative probability of survival, and manoeuvring to avoid collisions.

NOTE Satellite operators accept that all conjunction and collision assessment techniques are statistical. All suffer false positives and/or missed detections. The degree of uncertainty in the estimated outcomes is not uniform across all satellite orbits or all assessment intervals. No comparison within a feasible number of test cases can reveal the set of techniques that is uniformly most appropriate for all.