@article{oai:nagasaki-u.repo.nii.ac.jp:00021045,
 author = {Hayashi, Hidechito and Fisher, M. J.},
 issue = {49},
 journal = {長崎大学工学部研究報告},
 month = {Jul},
 note = {The measurement of the characteristics of the acoustic field generated by a set of sources is very important to understand and to control the noise. In the 1970's, M. J. Fisher proposed the Polar Correlation Technique to solve this problem. The Polar Correlation Technique and the development of it indicate the relationship between the cross spectra measured in the acoustical far field and the distribution of source strengths. And it is proposed the method of a least squares error of cross spectra to estimate the source strength distribution at the case of aero-engine accurately. In the last report it is extended this method for the relative strengths of partially coherent sources. The results of this method was better than that with the direct calculating method. In the present work it is extended this method for the case of unknown characteristics not only the relative strength but also the phase between the array of partially coherent sources., 長崎大学工学部研究報告 Vol.27(49) p. 213-220, 1997},
 pages = {213--220},
 title = {Measuring the Relative Strengths and Phases of a Set of Partially Coherent Sources},
 volume = {27},
 year = {1997}
}