I will show you how to Download Rectified Google Earth Imagery to get big High Resolution Imagery covering your area/site of interest using "ElShayal Smart GIS Web On Line Software" and Google Earth (Both are FREE SOFTWARE)
You can get ElShayal Smart GIS Software for FREE at: http://freesmartgis.blogspot.com/
See other alternatives at: https://umaryusuf.blogspot.com.ng/20...
Enjoy!