To bring How to modify 2 raster images obtained from different sources to have the same resolution?

Iam having 2 rasterI have data, one z downloaded from trmm and other is an MSAVI2 output image.both are having differnt resolutions and for 2 rasters images that have different resolutions:

z downloaded from trmm

An MSAVI2 output image.

For calculating the correlation between them i need, the data has to bring them atbe in the same resolution.I I have tried reproject in erdas, but the result tht ithat I got zwas not z correct. how

How can iI do this.how? Or how to do itthis with the resample command in arcgis?

To bring 2 raster images obtained from different sources to the same resolution

Iam having 2 raster data, one z downloaded from trmm and other is an MSAVI2 output image.both are having differnt resolutions and for calculating the correlation between them i need to bring them at same resolution.I have tried reproject in erdas, but the result tht i got z not correct. how can i do this.how to do it with the resample command in arcgis

How to modify 2 raster images to have the same resolution?

I have data for 2 rasters images that have different resolutions:

z downloaded from trmm

An MSAVI2 output image.

For calculating the correlation between them, the data has to be in the same resolution. I have tried reproject in erdas but the result that I got was not z correct.

How can I do this? Or how to do this with the resample command in arcgis?