A single-channel SAR-GMTI algorithm based on sub-apertures and FrFT

Shujun Liu; Yunneng Yuan; Jun Wei; Shiyi Mao

doi:10.1117/12.773985

10 November 2007 A single-channel SAR-GMTI algorithm based on sub-apertures and FrFT

Shujun Liu, Yunneng Yuan, Jun Wei, Shiyi Mao

Proceedings Volume 6795, Second International Conference on Space Information Technology; 67951Y (2007) https://doi.org/10.1117/12.773985
Event: Second International Conference on Spatial Information Technology, 2007, Wuhan, China

Abstract

This paper investigates sub-image cancellation for ground moving target indication (GMTI) with a single-antenna airborne synthetic aperture radar (SAR). First the paper points out how to choose the sub-image from the whole image. After the generation of the sub-image, the imaging difference of stationary object and moving object in the sub-image based on the frequency division is analyzed. Once the detection is completed, the moving target is still dispersed and the FrFT(Fractional Fourier Transformation) algorithm is chosen to focus it. Using FrFT algorithm, the doppler modulation rate can be obtained so that the azimuth velocity of the moving target is estimated in this way. The theoretical analysis and simulation results demonstrate that the method is effective and can not only detect the moving targets but also estimate their motion parameters precisely.

Citation Download Citation

Shujun Liu, Yunneng Yuan, Jun Wei, and Shiyi Mao "A single-channel SAR-GMTI algorithm based on sub-apertures and FrFT", Proc. SPIE 6795, Second International Conference on Space Information Technology, 67951Y (10 November 2007); https://doi.org/10.1117/12.773985

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