Proceedings ArticleDOI
Clutter mitigation techniques for space-based radar
S.M. Kogon,Daniel J. Rabideau,R.M. Barnes +2 more
- Vol. 4, pp 2323-2326
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TLDR
This paper describes how space-time adaptive processing (STAP) can be used for the purposes of clutter rejection in order to perform the GMTI function and confronts several important issues for a space-based radar such as pulse repetition frequency (PRF) selection, the choice of a STAP algorithm, and the number of spatial channels.Abstract:
The mission of a ground moving target indication (GMTI) radar, as its name implies, is to detect and classify ground-based vehicles, even ones with very low velocities. This type of radar can provide a wide area of coverage and frequent updates of a specific area of interest if the radar is placed on a satellite with a low Earth orbit. However because of the large footprint of the radar on the ground and the high satellite velocity target signals must compete with very strong, nearby clutter. This paper describes how space-time adaptive processing (STAP) can be used for the purposes of clutter rejection in order to perform the GMTI function. In addition, we confront several important issues for a space-based radar such as pulse repetition frequency (PRF) selection, the choice of a STAP algorithm, and the number of spatial channels. These results are quantified in terms of clutter cancellation and angle accuracy.read more
Citations
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Along Track Interferometry Synthetic Aperture Radar (ATI-SAR) Techniques for Ground Moving Target Detection
TL;DR: A dual-threshold approach that combines the conventional interferometric phase detection and the SAR image amplitude detection in order to reduce the false alarm rate is proposed.
Proceedings ArticleDOI
Effects of clutter modeling in evaluating STAP processing for space-based radars
J. Maher,M. Callahan,D. Lynch +2 more
TL;DR: RLSTAP is shown to be an effective tool for modeling clutter representative of that seen by an actual spaceborne system and the Doppler aliasing of the clutter spectrum impacts the requirements on the STAP processor.
Proceedings ArticleDOI
A signal processing architecture for space-based GMTI radar
Daniel J. Rabideau,S.M. Kogon +1 more
TL;DR: By addressing issues such as aperture configuration, bandwidth-induced decorrelation, adaptive training, and degree-of-freedom requirements, a multistage space-time adaptive processing (STAP) architecture is constructed.
Proceedings ArticleDOI
Subband STAP in wideband radar systems
A. Hoffman,S.M. Kogon +1 more
TL;DR: This paper identifies the cause of the problem and proposes an effective solution to solve issues unique to subband STAP, namely, target Doppler dispersion across subbands and range sidelobe levels following subband recombination.
Patent
Pri-staggered post-doppler adaptive monopulse processing for detection and location of a moving target in ground clutter
TL;DR: In this paper, a method, apparatus, and processing system for radar detection and tracking of a target using monopulse ratio processing comprising the following steps is presented: first, receiving a signal comprised of a plurality of sum and difference beams and then staggering the received signal, filtering and localizing a clutter signal which is a portion of the received sum and azimuth beams.
References
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Proceedings ArticleDOI
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.
Journal ArticleDOI
Adaptive arrays in airborne MTI radar
TL;DR: The technique described here can adapt the element weights to compensate for near-field scatterers and element excitation errors and another important advantage is the ability to null out discrete active interference sources without significantly degrading AMTI performance.
Book
Space-Based Radar Handbook
TL;DR: In this article, the authors present fifteen chapters on topics that include: space-based systems, orbital considerations, ionospheric environment, bistatic radar, rendezvous radar, radar altimeters, scatterometers, thermal control, radar cross section, SBR clutter, prime power systems in space.
Proceedings ArticleDOI
Cramer-Rao bounds for target angle and Doppler estimation with space-time adaptive processing radar
TL;DR: Space-time adaptive processing (STAP) can substantially improve airborne radar performance in environments with interference (clutter and/or jamming) and target parameter estimation with the STAP radar is considered.