Both the meteoroid and orbital debris investigators can, and have, benefited by sharing data and modelling techniques.

modelling

Modelling tools.

Statistical modelling

The data sets were developed using GIS modelling techniques and the most recently available data on subnational administrative boundaries and human population at the most detailed administrative level.

In addition to being capable of modelling the present debris environment, it can be used to investigate future evolutionary characteristics under various mitigation practices using Monte Carlo techniques.

Short term modelling

Long term modelling

Indonesian climate modelling

A. Space debris modelling

A. Modelling space debris

C. Modelling and database

B. Statistical modelling methodologies

have been considered.S. P. Barrows, G. G. Swinerd and R. Crowther, quot A comparison of debris cloud modelling techniques quot , Advances in the Astronautical Sciences, Vol. 89, Part II, 1996, pp. 1233 1247.

The results are useful for modelling drag effects of the high atmosphere, for validation of fragmentation events, for concept development of space based detection and warning methods, and for considerations of active removal techniques.

SIRA, Royal Greenwich Observatory Population modelling

(a) Atmospheric research and climate modelling

A. Space debris modelling and mitigation

A set of modelling programmes called the Space Debris Simulation suiteS. P. Barrows, G. G. Swinerd, R. Crowther, Review of Debris Cloud Modelling Techniques, Journal of Spacecraft and Rockets, vol. 33, No. 4, July August 1996. considers the consequences of collision or explosion induced break ups and the short term evolution of the resulting debris cloud.

Other infrastructure related capacity building activities included training on the establishment of a GIS database of the electricity distribution networks, distribution network modelling, analysis and design and distribution planning software and techniques training for engineers.

B. Statistical modelling methodologies 14 16 6

2.1 Modelling of the space debris environment

I. Space debris modelling and prevention (IfRR TUBS)

2.1 Methods of modelling of the debris environment

(b) Modelling and prediction, including global circulation models

Space pollution modelling and cataloguing of space debris

1. Additional source terms for orbital debris modelling

2. Modelling of space debris environment and risk assessment

B. Pollution modelling and cataloguing of objects and particles

1997 Modelling of space debris environment and risk assessment.

In particular, the hardware advances in rapid neutron detection arrays and active time of flight probing techniques have been a recent focus of attention, as have the various post data acquisition analysis and modelling methodologies that are under development internationally.

Two and three dimensional mathematical modelling programmes have been devised.

Specialization in macroeconomic modelling, International Labour Organization, Geneva, Switzerland, 1980

2.1 Modelling of the space debris environment 60 77 15

2. Modelling of the space debris environment and risk assessment

The British Geological Survey carries out research into the modelling of atmospheric effectsT.D.G. Clark and A. D. Aylward, quot Modelling the effects of thermospheric winds on satellite orbits quot , paper presented at ESTEC Symposium on Environment Modelling for Space Based Applications, Noordwijk, Netherlands, 18 20 September 1996.

Investigation techniques

Ozone, greenhouse gases and air pollution distribution modelling (above big cities)

Stronger ties between the modelling and measurement communities must be fostered.

The Subcommittee agreed to focus on understanding research related to space debris, including debris measurement techniques mathematical modelling of the debris environment characterizing the space debris environment and measures to mitigate the risks of space debris, including spacecraft design measures to protect against space debris.

A special focus of this global modelling is the Asia Pacific region.

This modelling work is complementary to that of the University of Kent.

Other than the modelling of the present debris population, the long term modelling requires assumptions describing the future space flight activities, including the debris generation mechanisms, in terms of, for example

Special investigative techniques

special investigation techniques