Modulating multicarriers with chirp for MIMO-SAR waveform diversity design

In multiple-input multiple-output synthetic aperture radar (MIMO-SAR), the orthogonal waveform diversity design plays a critical role. In this paper, we design multiple orthogonal waveforms by applying the multiple subcarrier technique in digital communications to commonly-used chirp radar waveform...

Full description

Saved in:
Bibliographic Details
Main Authors: Kuoye Han, Yanping Wang, Xueming Peng, Wen Hong
Format: Conference Proceeding
Language:English
Subjects:
Arrays
Chirp
Imaging
MIMO-SAR
multicarriers
OFDM
Radar imaging
Transmitters
waveform diversity
Online Access:Request full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:In multiple-input multiple-output synthetic aperture radar (MIMO-SAR), the orthogonal waveform diversity design plays a critical role. In this paper, we design multiple orthogonal waveforms by applying the multiple subcarrier technique in digital communications to commonly-used chirp radar waveform with large time-bandwidth product and constant modulus, so that the orthogonality of subcarriers within a common frequency band and good properties of chirp waveform are sufficiently exploited. The detailed modulation and demodulation methods are presented and the application potentials of the new waveform in MIMO-SAR are investigated. The proposed waveform diversity design method has the advantages of implementation simplicity and easy integration with the conventional SAR processor. Semi-physical simulation with an Agilent arbitrary waveform generator (AWG) and a high-speed oscilloscope (OSC) verifies the scheme. The performance is also evaluated by theoretical analysis and simulation results.
DOI:10.1109/ICSPCC.2013.6664000