Especially the underwater acoustics high - resolution multi - source direction finding technique is the key to underwater searching and ocean exploration . sponsored and supported by the national natural science foundation , the aviation science foundation as well as the national pre - research project , bayesian high - resolution method is thoroughly studied and summarized in this thesis . the novel bayesian high - resolution doa estimator based on gibbs sampling is given to improve the real - time performance of original bayesian high - resolution doa estimator 本文在国家自然科学基金、航空基础科学基金和“九五”重点预研项目的资助下，对贝叶斯高分辨方法进行了深入的研究和总结，并且针对原贝叶斯高分辨方位估计方法计算量大的问题，给出了基于吉布斯采样法的贝叶斯高分辨多目标方位估计新方法，使得贝叶斯高分辨方法向实时应用迈进了重要的一步。
The anion surfactant nals was the most efficient in the process and was selected as collector by orthogonal method . the interfacial tension and cmc of nals ( cmc 6 . 5 10 - 3m ) in the solution was measured by hanging ring test , the function relationship between interfacial tensions and nals concentration was : = - 0 . 9523 in 2c - 24 . 534 in c - 81 . 411 . the relation of interfacial adsorption equilibrium in the solution system was respectively tested and calculated with gibbs equation and dynamic method . the conclusion showed that ( 1 ) the experiment result of dynamic method with was highly in coordination with the value which from theoretical calculation . ( 2 ) the surfactant molecule was in arrangement of monomolecular layer at the gas - liquid interface 用吊环法测定了十二烷基硫酸钠水溶液不同浓度与其界面张力的关系，拟合得到的回归方程为= - 0 . 9523ln ~ 2c - 24 . 534lnc - 81 . 411 ，同时还测得其临界胶束浓度值( cmc为6 . 5 10 ~ ( - 3 ) m ) ，运用吉布斯等温方程和动态法分别计算和测定了该溶液系统的界面吸附平衡关系，结论表明： ( 1 )动态法测定结果基本吻合吉布斯方程的理论计算； ( 2 )表面活性剂分子在气?液两相界面是以单分子层形式定向有序排列的。
