Simulation Operation Model for Radio Equipment of Computeraided Dataexchange System
The article describes a simulation model of radioequipment operation for computeraided dataexchange
system created in order to evaluate influence of failure rate of radioequipment devices and time for
their recovery, on probability of uninterruptible dataexchange between computeraided dataexchange
systems of two ships during a longtime period.
The model of the operation process of radio equipment is developed using a mathematical scheme of
queueing system  Qscheme. The model response is an evaluation of the probability of uninterruptible
dataexchange between computeraided dataexchange systems of two ships during a longtime period.
The model factors are the following reliability parameters of each radio equipment: failure rate and recovery
time. The article also gives a blockdiagram of general algorithm of the radioequipment operation process
and blockdiagrams of procedures to define and change states of radioequipment devices simulated by
queueingsystem channels.
The simulation model is at the level of software implementation. The result of the software implementation
of the simulation model with values of the reliability parameters of radioequipment devices, given by
users, is an interval evaluation of probability of uninterruptible dataexchange between computeraided dataexchange systems of two ships during a time period given by users. The required accuracy and
adequacy of the evaluation are ensured by a required number of software iterations, calculated by the
programme, with the same initial data.
To evaluate the importance of factors (reliability parameters of radioequipment devices), a variance
analysis of each of them with response has been made. A combination of achievable factor values when
response values becomes the largest, has been defined by a method of coordinate raising. Simulation model, channel state, variance analysis, method of coordinate raising.
