An Analytical Error Model for Spaceborne SAR Multichannel Azimuth Reconstruction
نویسندگان
چکیده
منابع مشابه
A Novel Array Error Estimation Method for Azimuth Multichannel SAR
Minimum side-zone power to center-zone power ratio (MSCR) method is presented to estimate array errors of azimuth multichannel synthetic aperture radar (SAR). Spaceborne azimuth multichannel SAR is one of the most promising candidates for achieving high-resolution wide-swath imaging. However, array errors brought in by instrument influences and aperture position errors need to be compensated. M...
متن کاملMultichannel Staggered SAR Azimuth Sample Regularization
Next-generation spaceborne SAR systems pose demanding and contradicting requirements on system design, owing to the increasing need to cover ultra-wide swaths with high azimuth resolution, as required for numerous applications. To this end, a large number of multichannel SAR system concepts have been proposed that employ digital beamforming on receive with planar arrays, and more recently also ...
متن کاملInvestigation of Azimuth Multichannel Reconstruction for Moving Targets in High Resolution Wide Swath SAR
The azimuth multichannel imaging scheme with the large receive antenna divided into multiple sub-apertures usually leads to azimuth non-uniform sampling, and echoes from all azimuth channels should be reconstructed based on the signal model before conventional SAR imaging. Unfortunately, the multichannel signal model of a moving target is different from that of a fixed target. This paper analyz...
متن کاملAzimuth Multichannel Sar Imaging Based on Compressed Sensing
Azimuth multichannel is a promising technique of realizing high resolution and wide swath for synthetic aperture radar (SAR) imaging, which consequently leads to extremely high data rate on satellite downlink system and confronts serious ambiguity in subsequent processing due to its strict limitation of pulse repetition frequency (PRF). Ambiguity suppression performance of conventional spectrum...
متن کاملUnambiguous Imaging of Static Scenes and Moving Targets with the First Chinese Dual-Channel Spaceborne SAR Sensor
Multichannel synthetic aperture radar (SAR) is a breakthrough given the inherent limitation between high-resolution and wide-swath (HRWS) faced with conventional SAR. This paper aims to obtain unambiguous imaging of static scenes and moving targets with the first Chinese dual-channel spaceborne SAR sensor. We propose an integrated imaging scheme with the dual-channel echoes. In the imaging sche...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: IEEE Geoscience and Remote Sensing Letters
سال: 2018
ISSN: 1545-598X,1558-0571
DOI: 10.1109/lgrs.2018.2811786