Performance Analysis for Multichannel HRWS SAR Systems Based on STAP Approach

Author

Taoli Yang ; Zhenfang Li ; Zhiyong Suo ; Yanyang Liu ; Zheng Bao

Author_Institution

Key Lab. for Radar Signal Process., Xidian Univ., Xi´an, China

Volume

10

Issue

6

fYear

2013

fDate

Nov. 2013

Firstpage

1409

Lastpage

1413

Abstract

Incorporated with digital beam-forming processing, multichannel spaceborne synthetic aperture radar (SAR) systems are able to overcome the minimum antenna area constraint and yield high resolution and wide swath (HRWS) images. This letter mainly investigates the performance of the space-time adaptive processing (STAP) approach applied to HRWS SAR imaging. The analytic expressions for the signal-to-noise ratio (SNR) scaling factor and azimuth ambiguity to signal ratio (AASR) are derived and confirmed by the simulated results. Then, the influence of channel errors on HRWS imaging is analyzed in detail.

Keywords

radar imaging; remote sensing by radar; synthetic aperture radar; HRWS SAR imaging; SNR scaling factor; STAP approach; channel errors; digital beam-forming processing; high resolution image; multichannel HRWS SAR systems; multichannel spaceborne SAR systems; performance analysis; signal-to-noise ratio; space-time adaptive processing; synthetic aperture radar; wide swath image; Azimuth; Doppler effect; Signal to noise ratio; Spaceborne radar; Synthetic aperture radar; Vectors; Channel error; high-resolution wide-swath (HRWS); multichannel; space–time adaptive processing (STAP); synthetic aperture radar (SAR);

fLanguage

English

Journal_Title

Geoscience and Remote Sensing Letters, IEEE

Publisher

ieee

ISSN

1545-598X

Type

jour

DOI

10.1109/LGRS.2013.2258889

Filename

6562772