Satellite imagery is downladed from USGS website in zip file format. After extracting the zip file,
Open satllite image in ERDAS IMAGINE 2013
Then select Manage data → Import data → Select format ( eg: Generic binary)
From the dialog box appears Select Input file, Set Output → Browse folder → Create file
Another dialog/pop up window appear named Import Generic Binary Data
From the dialog box appears enter data details of satllite images from CDINFO Select CDINFO → Enter each data in dialoge box → Importing Generic Binary Data
Text file containing details about Satellite Image
Tab for importing Generic Binary data