The 1553B channel characters can provide instruction in the topology design and the physical layer parameters design .The single frequency channel models and the impairments prediction models considering the frequency related parameters are proposed in this paper .The RLCG and ABCD models of single frequency twisted pair and coupler and the parameters extraction methods are proposed .Then the 1553B channel model can be derived from the cascaded RLCG or ABCD models .Besides ,the signal impairments can be predicted by adding signals in different frequencies ,where the channel parameters varied in different frequencies .Simula-tion and measurement results validated the accuracy of the proposed model .Finally ,models will be verified and modified .The modeling progress should be a trade off between accuracy and complexity .%本文提出了单频点的信道模型和考虑参数随频率变化的失真预测模型，并提出单频点下屏蔽双绞线及耦合器的RLCG模型及ABCD模型，以及各模型参数的获取方法，且通过系统级联得到单频点的1553B信道RLCG模型及ABCD模型。通过各频点信号的频域叠加来预测信号失真程度，以获得参数随频率变化的失真预测模型。仿真和测试结果表明，本文所提出的建模方法及模型具有一定的准确性。本文还给出了模型的验证和修正方法，使建模工作可在准确性和复杂度之间折衷。
展开▼
