Journal ArticleDOI
Joint Monostatic and Bistatic STAP for Improved SAR-GMTI Capabilities
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TLDR
A novel simultaneous monostatic and bistatic ground moving target indication (GMTI) mode for improved target detection and imaging capability using an airborne multichannel radar system and a stationary transmitter is proposed.Abstract:
This paper proposes a novel simultaneous monostatic and bistatic ground moving target indication (GMTI) mode for improved target detection and imaging capability. The mode uses an airborne multichannel radar system and a stationary transmitter. Both systems transmit simultaneously on adjacent frequency bands, and the airborne multichannel system receives both its monostatic echoes and the bistatic returns. Geometrical diversity between the monostatic and bistatic measurements enhances moving target detection capabilities. Moreover, for movers detected in both data sets, an estimation of the target velocity vector (i.e., velocity and direction of motion) can be performed. By simply extracting a single-channel data set, this also allows correct focusing of moving targets both in monostatic and bistatic data sets, if synthetic aperture radar GMTI capability is required. Consequently, situational awareness over the observed area is greatly improved. The effectiveness of the proposed technique is analyzed both from a theoretical point of view and by means of an ad hoc experiment conducted by the Fraunhofer Institute for High Frequency Physics and Radar Techniques (FHR) in fall 2013.read more
Citations
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Journal ArticleDOI
A Two-Step Nonlinear Chirp Scaling Method for Multichannel GEO Spaceborne–Airborne Bistatic SAR Spectrum Reconstructing and Focusing
TL;DR: With the proposed two-step nonlinear chirp scaling (NLCS) method, the well-focused image for GEO BiSAR is obtained and the required number of receiving channels can be decreased, which is beneficial to reducing the system complexity and hardware cost.
Journal ArticleDOI
Bistatic Forward-Looking SAR MP-DPCA Method for Space–Time Extension Clutter Suppression
TL;DR: A BFSAR multipulse displaced phase center antenna (MP-DPCA) method is proposed, which not only overcomes the nonstationary problem in B FSAR but also conquers the strict application conditions of DPCA.
Journal ArticleDOI
Subarray-based FDA radar to counteract deceptive ECM signals
TL;DR: A novel method based on subarrayed FDA signal processing is proposed to counteract deceptive ECM signals, which shows that the proposed solution is effective for deception ECM targets suppression.
Journal ArticleDOI
An Autocorrelation-Based Radio Frequency Interference Detection and Removal Method in Azimuth-Frequency Domain for SAR Image
TL;DR: A novel radio frequency interference detection and removal method for a synthetic aperture radar (SAR) that is exclusively sensitive to a pulse-like signal that is temporally transmitted in wide bandwidth is proposed.
Journal ArticleDOI
Ground Moving Target Indication for the Geosynchronous-Low Earth Orbit Bistatic Multichannel SAR System
TL;DR: In this article, an effective clutter suppression and moving target imaging approach is proposed for the geosynchronous-low earth orbit (GEO-LEO) bistatic multichannel synthetic aperture radar (SAR) system, which is robust for the fast moving target with Doppler centroid ambiguity.
References
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A CFAR adaptive matched filter detector
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Space-time adaptive processing for airborne radar
TL;DR: An overview of partially adaptive STAP approaches is provided and the effect of STAP on angle and Doppler accuracy is described, and an approach for joint angle and doppler estimation in a STAP radar is described.
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Synthetic Aperture Radar Signal Processing with MATLAB Algorithms
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Precision SAR processing using chirp scaling
TL;DR: Based on quantitative comparison, the chirp scaling algorithm provides image quality equal to or better than the precision range/Doppler processor, as defined by the system bandwidth.
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Principles of Space-Time Adaptive Processing
TL;DR: In this article, a systematic introduction to airborne MTI (moving target indication) system design for use in the fields of earth observation, surveillance and reconnaissance, with particular regard to the suppression of clutter returns is presented.