Research of data collection simulation federate Based on HLA

first,this paper introduces some kind of date collections Based on HLA,so educes the paper subject.And then introduces the general framework of data collection simulation federate Based on HLA and some key technologies,some key technologies in detail is discussed and new opinions on logging format and storage format of simulation data helping to improve data collection are presented.at last sums up the character of the federate and its usage in practice.