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Moving target indication

About: Moving target indication is a research topic. Over the lifetime, 2653 publications have been published within this topic receiving 32435 citations.


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Patent
Hidefumi Nagata1
23 Dec 1996
TL;DR: In this paper, the Doppler frequency displacements arising from a range direction motion component of a target and motion components of a flying body were analyzed to produce a motion target image.
Abstract: A synthetic aperture radar apparatus which analyzes Doppler frequency displacements arising from a range direction motion component of a target and motion components of a flying body to produce a motion target image wherein only azimuth direction motion components of the target are converted into Doppler components. An SAR apparatus wherein SAR reproduction processing is performed based on target information obtained from a reflected wave received from a target and flying information of a flying body includes a recording and reproduction unit for recording the target information and reproducing the data in a designated range, and a moving target processor for analyzing Doppler frequency displacements arising from a range direction motion component of the target and motion components of the flying body from the reproduced data and producing a moving target image wherein only azimuth direction motion components of the target are converted into Doppler components.

10 citations

Proceedings ArticleDOI
01 Oct 2011
TL;DR: A novel algorithm adopting a recursive MMSE-based receiver, denoted as time-range adaptive processing, is proposed to suppress both the range-Doppler sidelobe and clutter.
Abstract: The range-Doppler sidelobe and clutter seriously depress the target detection. In this paper, a novel algorithm adopting a recursive MMSE-based receiver, denoted as time-range adaptive processing, is proposed to suppress both the range-Doppler sidelobe and clutter. Simulation results demonstrate the advantages of the proposed algorithm.

10 citations

Journal ArticleDOI
TL;DR: A joint-pixel clutter suppression method based on slope compensation that utilizes the information contained in the current pixel as well as in its neighbors, showing robustness to the image coregistration errors.
Abstract: A joint-pixel clutter suppression method based on slope compensation is proposed in this paper. In order to eliminate the effect of the terrain interferometric phase caused by the cross-track baseline in hybrid baseline InSAR, the local independent identical distribution of the clutter is satisfied by using the slope compensation technique, and thus the clutter can be suppressed successfully by using the orthogonality of the clutter subspace and the noise subspace. This approach utilizes the information contained in the current pixel as well as in its neighbors, showing robustness to the image coregistration errors. Both the simulated data and the real airborne data are used in proving the validity of the presented approach.

10 citations

12 Apr 1972
TL;DR: It is shown that MTI performance is improved significantly with DPCA, and since D PCA does not completely compensate for platform motion,MTI performance can be limited by this technique under certain conditions.
Abstract: : Coherent signal processing in an airborne radar is highly dependent upon methods used to compensate for platform (e.g., airplane) motion. Platform motion causes returns to have doppler shifts which vary with the angle between the velocity vector of the platform and that of the target or scatterer. Because of the finite antenna beamwidth and the finite transmitted pulse length, radar returns from many scatterers are received simultaneously from different angles. Therefore, these returns combine to give a spectrum of doppler frequencies which must be corrected. Displaced Phase Center Antenna (DPCA) is a technique which compensates for the component of motion which is perpendicular to the axis of the beam. This report evaluates DPCA in terms of its improvement to airborne moving target indicator (MTI) performance. It is shown that MTI performance is improved significantly with DPCA. However, since DPCA does not completely compensate for this motion, MTI performance can be limited by this technique under certain conditions.

10 citations

Proceedings ArticleDOI
01 Nov 2007
TL;DR: The range profiles of high range resolution (HRR) radar are used for pose angular estimation of maneuvering targets in clutter and a pose-sensitive classifier provides matching scores that are converted into likelihoods and updated over time in a probabilistic manner.
Abstract: Maintaining track continuity is a challenging task for large area persistent surveillance with high target density, rapid target maneuvering, and low target-to-clutter ratio When the sensor revisit interval is long, measurement-to-track association becomes rather difficult Although maneuvering targets can be discriminated via Doppler processing, clutter still masks moving targets at certain aspect angles This creates a blind zone for GMTI (ground moving target indicator) radar, which may extend as large as 25% of the azimuth angles For high-value targets that may undergo evasive maneuvers, a net track solution coordinating multiple looks from a netted set of sensors is set forth in this paper to ensure continuous monitoring Target visibility therefore needs to be factored into netted radar platform coordination and sensor systems management For ground targets, their heading is mostly aligned with the longitudinal axis The target pose thus carries kinematic information about the direction of velocity vector that can be used to assist tracking of maneuvering targets In this paper, the range profiles of high range resolution (HRR) radar are used for pose angular estimation of maneuvering targets in clutter A pose-sensitive classifier provides matching scores that are converted into likelihoods and updated over time in a probabilistic manner Pose angular tracking from individual sensors in the network is fused to cover the blind zone encountered by individual sensors A software simulation environment that produces range profiles based on the RF signatures of moving targets is used in the study Simulation results for pose angular tracking in clutter are presented to illustrate the net track solution concept and its performance

10 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202327
202272
202131
202052
201966
201859