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Record Search Query:

SAR Training Processor (STP)
Entry ID: ASF_STP

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Summary

Abstract: The SAR Training Processor (STP) uses a graphical user interface that allows the user to take full control over each aspect of the processing of SAR data.

The data set to be processed is selected using a standard browse menu. By default all processing results will be written into the input data directory. Any changes in the output directory need to be manually entered in the output file field.

... The STP processes one patch of data which is equivalent of about 4000 lines of raw data. If the user wants to analyze a particular part of the SAR image, he can choose an appropriate start line within the SAR image.

The Doppler centroid parameters determine the precise look direction of the sensor and, therefore, can significantly influence the image geometry. The influence of each of the Doppler centroid terms, described by a constant, a linear and a quadratic term, can be studied by changing each of these parameters.

The range Doppler processing consists of two compressions in range and azimuth direction, i.e. two complex multiplications with the respective reference function, and a correction for range cell migration. For a well focused SAR image all these three processing steps need to be carried out. However, the user can study the influence of leaving any of these steps out of the processing flow by changing the status of the check box next to the processing steps.

Intermediate results can be stored for each processing step individually and for all intermediate results by toggling the appropriate output button. For each intermediate result the amplitude and phase, encoded in color, are combined and saved in JPEG format, with the exception of the range reference function in time and frequency domain that is stored in a plain ASCII text format.

Each processing step is explained in detail with a diagram showing the place of the processing step within the general SAR processing flow. This way the user has the context how the particular processing step fits into the overall processing scheme. The information buttons next to the processing steps are used to switch between the descriptions of the individual steps.

The output of each processing step can be visualized using the preview button located next to the information button. For closer examination of the intermediate results the user can view the JPEG images in the common graphics or image processing packages or use the ASF viewer.

[Summary provided by the ASF DAAC.]

Description: SAR Training Processor user manual.

Service Citation

Originators: Alaska Satellite Facility
Title: SAR Training Processor (STP)
Release_Date: 2009-01-09
Provider: Alaska Satellite Facility
Edition: 1.1.10
URL: http://www.asf.alaska.edu/sardatacenter/softwaretools

Service Keywords

DATA ANALYSIS AND VISUALIZATION >VISUALIZATION/IMAGE PROCESSING

DATA MANAGEMENT/DATA HANDLING >TRANSFORMATION/CONVERSION

Science Keywords

SPECTRAL/ENGINEERING >RADAR >RADAR IMAGERY

ISO Topic Category

IMAGERY/BASE MAPS/EARTH COVER

Instrument

SAR >Synthetic Aperture Radar

Project

EOSDIS >Earth Observing System Data Information System

ESIP >Earth Science Information Partners Program

Access Constraints User registration is required to access the SAR Training Processor (STP) software.

Use Constraints Contact the ASF DAAC User Services at uso@asf.alaska.edu regarding use constraints for the SAR Training Processor (STP) software.

Ancillary Keywords

Data Processing
Data Visualization
SAR
Synthetic Aperture Radar

Service Provider

ASF > Alaska Satellite Facility

Service Organization URL: http://www.asf.alaska.edu/

Service Provider Personnel
Name: ASF DAAC USER SUPPORT Phone: (907) 474-6166 Fax: (907) 474-2665 Email: uso at asf.alaska.edu Contact Address: Alaska Satellite Facility Geophysical Institute University of Alaska Fairbanks PO Box 757320 City: Fairbanks Province or State: AK Postal Code: 99775-7320 Country: USA

Distribution Media

Distribution_Media: Online
Fees: No fees

Personnel

ASF DAAC USER SUPPORT
Role: TECHNICAL CONTACT
Phone: (907) 474-6166
Fax: (907) 474-2665
Email: uso at asf.alaska.edu
Contact Address:
Alaska Satellite Facility
Geophysical Institute
University of Alaska Fairbanks
PO Box 757320
City: Fairbanks
Province or State: AK
Postal Code: 99775-7320
Country: USA

TYLER B. STEVENS
Role: SERF AUTHOR
Phone: (301) 614-6898
Fax: 301-614-5268
Email: Tyler.B.Stevens at nasa.gov
Contact Address:
NASA Goddard Space Flight Center
Global Change Master Directory
City: Greenbelt
Province or State: MD
Postal Code: 20771
Country: USA

Creation and Review Dates

SERF Creation Date: 2009-09-11
SERF Last Revision Date: 2011-02-24

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