Paper Info
Title
A Novel MIMO-SAR System Based on Simultaneous Digital Beam Forming of Both Transceiver and Receiver.
Abstract
Orthogonal frequency division multiplexing (OFDM) chirp waveform, which is composed of two or more successive identical linear frequency modulated sub pulses, is a newly proposed orthogonal waveform scheme for multi-input multi-output (MIMO) synthetic aperture radar (SAR) systems. However, according to the waveform model, there will be range ambiguity if the mapping width exceeds the maximum unambiguous width determined by the transmitted signal. This greatly limits its application in high-resolution wide-swath (HRWS) remote sensing. The traditional system divides the echoes by digital beam forming (DBF) to solve this problem, but the energy utilization rate is low. A MIMO-SAR system using simultaneous digital beam forming of both transceiver and receiver to avoid range ambiguity is designed in this paper. Compared with traditional system, the novel system designed in this paper obtain higher energy utilization and waveform orthogonality.
Year
DOI
Venue
2020
10.3390/s20226604
SENSORS
Keywords
DocType
Volume
multi-input multi-output synthetic aperture radar (MIMO-SAR),orthogonal frequency division multiplexing chirp (OFDM chirp),digital beamforming (DBF)
Journal
20
Issue
ISSN
Citations 
22
1424-8220
0
PageRank 
References 
Authors
0.34
0
5
Name
Order
Citations
PageRank
Yuzhen Zhao100.34
Longyong Chen2457.11
Fubo Zhang3447.79
Yan-lei Li455.54
Yirong Wu539646.55