Abstract: The susceptibilities of the time-average and fluctuation quantity of revising parameters was defined, and the mean square deviation of transient temperature between analysis and experiment values were built, so that the expression about time domain process of transient temperature was solved in parameter classification and the building of the minimum error target function. The sensitive parameters were corrected by the means of Monte-Carlo mixed method according to the classification layer by layer. The correction result shows that the transient temperature error is reduced from 8%~16% to less than 5%, and the time-average and fluctuation quantities are improved obviously. Moreover, the conclusion is proved by the experiment data which is not utilized in the correction process. It indicates the proposed method about transient temperature and Monte-Carlo mixed correction method according to the classification layer by layer in correction process is rational with improved transient thermal analysis accuracy.

Key words: Transientthermalanalysis, Monte-Carlomethod, Correctionlayerbylayer, Smallsatellite