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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.


Papers
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Patent
06 Jan 2011
TL;DR: In this paper, a plurality of filter operations are performed in parallel on the radar data so that each filter operation produces target image information, and motion of the target is tracked based on the target image produced by the one filter operation.
Abstract: Radar data associated with radar illumination of a movable target is processed to monitor motion of the target. A plurality of filter operations are performed in parallel on the radar data so that each filter operation produces target image information. The filter operations are defined to have respectively corresponding velocity ranges that differ from one another. The target image information produced by one of the filter operations represents the target more accurately than the target image information produced by the remainder of the filter operations when a current velocity of the target is within the velocity range associated with the one filter operation. In response to the current velocity of the target being within the velocity range associated with the one filter operation, motion of the target is tracked based on the target image information produced by the one filter operation.

7 citations

Journal Article
TL;DR: The concept of radar imaging was applied to the process of moving target detection with low signal to noise ratio(SNR) and an inverse synthetic aperture radar(ISAR) imaging method based on motion compensation of a moving target was presented.
Abstract: An inverse synthetic aperture radar(ISAR) imaging method based on motion compensation of a moving target was presented.The concept of radar imaging was applied to the process of moving target detection with low signal to noise ratio(SNR).The lateral and radial velocity of the target can be acquired by means of imaging processing.The location of the moving target and estimation of its cross-sectional area could be fulfilled using the multi-baseline image interferometric method.The geometric model for imaging moving target was established.A method for the compensation of signals from channels of multi-antenna time division multiplexing(TDM) receiver was proposed.The unambiguous angle orientation based on multi-baseline phase unwrapping was presented.The influence of the image SNR on interferometric orientation accuracy was analyzed.The validity of the proposed method was testified by both simulation and an example of its application.

7 citations

Journal ArticleDOI
TL;DR: The proposed radial velocity estimation algorithm is called the equivalent along-track interferometry method, which is implemented by twice imaging after reconstructing the data of several leftmost and rightmost channels, and featured by high accuracy and low computational load.
Abstract: Velocity estimation of a moving target is an important yet challenging issue facing the special mode of high-resolution and wide-swath (HRWS) synthetic aperture radar. HRWS imaging is achieved by splitting the antenna into multiple receive channels in azimuth with each channel working at low pulse repetition frequency sampling. In this study, the authors propose a novel approach to estimate the velocity of a moving target in HRWS mode, along with a complete moving target indication, estimation, and imaging scheme. The proposed radial velocity estimation algorithm is called the equivalent along-track interferometry method, which is implemented by twice imaging after reconstructing the data of several leftmost and rightmost channels. Moreover, the along-track velocity is also estimated for focused imaging of the moving target. The motion-adapted reconstruction and imaging algorithm is applied to achieve unambiguous imaging of the moving target. Experimental results verify the performance of the algorithm and its superiority for a moving target with interference from clutter, noise, and channel mismatches. The proposed algorithm is free of search and iteration, and featured by high accuracy and low computational load.

7 citations

Proceedings ArticleDOI
17 Jun 2015
TL;DR: The CS technique is employed to do the MTI processing in a radar system which employs measurements efficiently to detect the target and estimate its Doppler, indicating the effectiveness of the CS technique in various applications.
Abstract: Based on the sparsity idea, the recently developed technique of compressive sensing (CS) is shown to be able to reduce significantly the need for huge amount of data and high sampling rates. On the other hand, moving target indication (MTI) processing has long been known in the traditional pulse radars to be able to detect weak signals of moving targets. The main drawback of the conventional approaches is the lack of accuracy in Doppler estimation; most of them suffer from low resolution to separate multiple targets from each other with low number of pulses. In this paper, we employ the CS technique to do the MTI processing in a radar system which employs measurements (echo pulses) efficiently to detect the target and estimate its Doppler. The two stages of the proposed algorithm, calculate the measurement matrix and perform the detection and estimation procedure. The simulations verify the proposed method, indicating the effectiveness of the CS technique in various applications.

7 citations

Patent
13 Sep 1988
TL;DR: In this paper, a moving target indication (MTI) radar with TACCAR circuitry was used for shifting the frequency of the transmitter/local oscillator, which includes a main directional antenna, and subordinate antenna elements for detecting returns from sidelobe directions.
Abstract: A moving target indication (MTI) radar which includes TACCAR circuitry or similar means for shifting the frequency of the transmitter/local oscillator, includes a main directional antenna, and subordinate antenna elements for detecting returns from sidelobe directions. The signals from the subordinate antenna elements are modulated, and modulated return pulses are identified and employed to eliminate false pseudo moving target signals which would otherwise be received from the side lobes of the main antenna.

7 citations


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