Fast simulation of SAR raw data from complex scenes

Sune R. J. Axelsson

doi:10.1117/12.453968

28 January 2002 Fast simulation of SAR raw data from complex scenes

Sune R. J. Axelsson

Proceedings Volume 4543, SAR Image Analysis, Modeling, and Techniques IV; (2002) https://doi.org/10.1117/12.453968
Event: International Symposium on Remote Sensing, 2001, Toulouse, France

Abstract

In the analysis of SAR, there is a need of simulating complex scenes without having measured radar raw data available. The common method is based on a set of point reflectors, which model the response from an extended target. The received I,Q-signals along the SAR aperture are computed, and the effects of internal noise and uncompensated phase errors are easily included. This method becomes extremely cumbersome for complex scenes with radar response from each resolution cell. In this paper, a much more rapid method of raw data generation is applied. The complex numbers representing the SAR image are then converted to radar raw data using the SAR-processing algorithms backwards. The key transform is the scene centre focusing, which ties together SAR data and sensor geometry. This method of generating raw data is several orders of magnitude faster than the direct method described above. The effects of internal noise and phase errors, due to imperfect motion compensation, can easily be included. The method can be applied as well to simulation studies of auto-focusing, DPCA and STAP.

Citation Download Citation

Sune R. J. Axelsson "Fast simulation of SAR raw data from complex scenes", Proc. SPIE 4543, SAR Image Analysis, Modeling, and Techniques IV, (28 January 2002); https://doi.org/10.1117/12.453968

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available