Alaska Satellite Facility
Delivering Remote Sensing Data Since 1991

Go to complete list of keywords

Keywords are used to find the desired data. Use as many or as few keywords as needed.

Sample Keywords
KeywordDescription and Values

This is an ASF / JAXA frame reference. See also 'frame'.
Values: Any number, series of numbers, or number range from 1 to 900 for ERS, RADARSAT, JERS. 0-7200 for ALOS PALSAR.

outputFormat of the API search results returned. If not specified, default return is METALINK.

Example: output=JSON



Remote sensing platform that acquired the data.
Example: platform=ALOS

Values: AS, A3, E1, E2, J1, R1, SS, SA, SB, UA, AIRSAR, ALOS, ERS-1, ERS-2, JERS-1, RADARSAT-1, SEASAT, Sentinel-1A, Sentinel-1B, UAVSAR

Syntax hints:
  ·A"?" separates the URL from the keywords.
  ·The keywords are joined by  "\&" for command line, or "&" in the browser.
  ·The base URL and keywords may not have any spaces.
  ·Some keywords contain characters that must be encoded.
  ·Keywords are case sensitive.

Keyword Character Encoding:
For searches to be successful, URLs may not contain spaces, or parentheses. Some keywords, such as intersectsWith, have parentheses and spaces. Therefore those characters must be encoded as shown in the table below.

Character Encoding
URL SymbolReplace with ASCII
spaceremove spaces in URL or use '%20'. Use '+'  in keyword values
Get SAR Data

Get SAR Data

Select and download SAR data online using Vertex.

Use the ASF API for downloading SAR data via a command line.