Analysis Method Based on Large-scale Anisotropy of Cosmic Ray

Describes two methods for analyzing wide sky survey based on Equi-Zenith angle method.One is the traditional Equi-Zenith angle method which has been applied to survey γ source during wide sky survey,and the other is χ2-iteration method based on Equi-Zenith angle method.The analysis results derived from different data samples by these two methods are nonneligibly diffrente.The former can not reflect the real phnomena in case of analyzing large scale anistropy while the latter can do.Howerer the latter restricts the analysis time scale caused by the limit coming from χ2 function.Finally,the advantages and disadvantages of each of these two methods were discussed.