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�������պ����ѧѧ�� 2004, Vol. 30 Issue (12) :1159-1162    DOI:
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һ�ֱ�������LBTS��HLAʱ�������
���Ǻ�, ���²�, ����Դ*
�������պ����ѧ �Զ�����ѧ���������ѧԺ ���� 100083
Method of updating LBTS passively for HLA time management
Hu Yahai, Xu Yongbo, Peng Xiaoyuan*
School of Automation Science and Electrical Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

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ժҪ LBTS(Lower Bound Time Stamp)��ѯ��Ӱ��ʱ��������ܵ���Ҫ����.Ϊ��߸߲���ϵ�ṹ(HLA,High Level Architecture)��ʱ����������,�����һ�ּ�С��Сʱ�������LBTS���ݴ������Ż�����,��������ѯLBTS��ɵ�LBTS�ı�ʱ��֪ͨ��Ӧ���ܿس�Ա.Ӧ�ÿɿ��鲥����,������ʱ������ͨѶ����,���㷨Ӧ���ھ�������֪ʶ��Ȩ��AST-RTI(Advanced Simulation Technology-Run Time Infrastructure)��,Ӧ��ϵͳ֤������Ч���RTI��ʵʱ��.������RTIʱ���������ڷ���Ӧ���д����������Լ������������������.
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Abstract�� The LBTS (lower bound time stamp) quarry is key problem for TM (time management) performance. An optimized method will be proposed for improve the TM performance in HLA(high level architecture). It can reduce the frequency of LBTS transfer, and time-constrained federates will be notified LBTS only when LBTS is changed rather than they quarry LBTS actively. Reliable multicast services are applied to reduce the communication cost. These algorithms have been used in TM in self-developed AST-RTI (advanced simulation technology-run time infrastructure), and application systems showed that RTI real time performance has been improved. Then the simulation application problems in RTI TM mechanism and solutions will be discussed.
Keywords�� high level architecture   run time infrastructure   time management   lower bound time stamp     
Received 2003-07-01;
About author: ���Ǻ�(1974-),��,����������,��ʿ��, hyh@cpit.com.cn.
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���Ǻ�, ���²�, ����Դ.һ�ֱ�������LBTS��HLAʱ�������[J]  �������պ����ѧѧ��, 2004,V30(12): 1159-1162
Hu Yahai, Xu Yongbo, Peng Xiaoyuan.Method of updating LBTS passively for HLA time management[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2004,V30(12): 1159-1162
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