Opening a 1__A File

The 1__A file type is primarily associated with SARscape.

1__A	File extension: 1__A
	File type:	Raw SAR Data

What is a 1__A file?

1__A files mostly belong to SARscape. *.1__A files refer to ALOS PALSAR Level 1A data files. These files contain raw sensor data from the ALOS PALSAR instrument, a synthetic aperture radar (SAR) sensor. The data is stored in the ALOS PALSAR CEOS format, a standard format for SAR data. This format preserves the original signal properties, allowing for detailed processing and analysis. The data within these files represents the unprocessed radar echoes received by the sensor, which can then be used to create various SAR products.

How to open 1__A files

You need a suitable software like SARscape to open a 1__A file. You need a suitable software like SARscape to open a 1__A file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your 1__A file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a 1__A file directly in the browser:. Just drag the file onto this browser window and drop it.

Online 1__A Text Viewer

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Online File Viewer

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Unable to Open a .1__A File? Quick Solutions:

Because .1__A files can originate from various specialized programs, they aren't universally openable.

Identify the Source: These files often come from remote sensing workflows or satellite radar imaging, suggesting they are Raw SAR Data.
Check the Header: Inspect the first bytes in a hex viewer or text editor:
- Readable XML/JSON: Often contains processing metadata.
- Binary magic bytes: Indicates raw, unformatted radar imagery.
- "PK": Suggests a zipped archive.
Use the Original Software: The original program is usually required; try SARscape, ENVI, or ask the sender if uncertain.
Use this Webpage: Drag and drop the file into our viewer to detect the format, extract readable metadata, and preview when possible.

Technical Data for 1__A File Extension

File classification:

Remote Sensing Data

Related files:

a 1__a Raw SAR Data is a special file format and should only be edited and saved with the appropriate software.

How to solve problems with 1__A files

Associate the 1__A file extension with the correct application.
Update your software that should actually open raw sar data files. Because only the current version supports the latest 1__A file format. Search, therefore, e.g. on the manufacturer website after an available SARscape update.
To make sure that your 1__A file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
Click here to open your .1__A file online - secure, fast, and no downloads needed.