Use of wideband waveforms for target recognition with surveillance radars

Linde, G.

doi:10.1109/radar.2000.851817

Cited by 7 publications

(5 citation statements)

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“…Let it be noted that due to the low resolution, narrow band radar can only decide the rough sorts of targets. If we transmit several broad band signals to obtain high resolution range profiles after radar detects the target, we can probably decide the exact targets [26].…”

Section: Discussionmentioning

confidence: 99%

Target classification with low-resolution radar based on dispersion situations of eigenvalue spectra

Chen

Liu

et al. 2010

Sci. China Inf. Sci.

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Most low-resolution radar systems, especially ground surveillance radar systems, work at relatively low pulse repeat frequency (PRF) and with short time-on-target (TOT) (duration in scanning). Low PRF leads to Doppler ambiguity and short TOT results in low Doppler resolution, which poses a problem to target classification with low-resolution radar based on the jet engine modulation (JEM) characteristic of radar echo. From the pattern classification viewpoint, we propose a method of using dispersion situations of JEM eigenvalue spectra to categorize aeroplanes into three kinds, namely turbojet aircraft, prop aircraft and helicopter. We analyze the mathematical model of JEM echoes consisting of a series of line spectra and regard them as a sum of several series of harmonious waves. Classification features can be extracted based on the harmonious wave sum model. Some schemes for extracting features from echoes within or between pulses are proposed. Low-dimensional features are extracted to reduce computation burden. Our methods do not compensate for the fuselage echoes and are insensitive to the variation of fuselage Doppler. The feasibility of our methods is demonstrated by simulation experiment.

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Section: Discussionmentioning

confidence: 99%

Target classification with low-resolution radar based on dispersion situations of eigenvalue spectra

Chen

Liu

et al. 2010

Sci. China Inf. Sci.

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“…The United States Navy research laboratory has increased the correlation processing equipment of the wideband linear frequency modulation signal, and got a higher resolution target range image, obtained the good recognition effect. [1] （2）The Americanprofessor has designed a conventional low resolution radar target recognition system based on multi feature decision space method, and realized the real-time identification of a certain aircraft by the combination of speed, size and magnitude. In 1995s, Canadian doctor Leung designed an intelligent recognition system of sea level warning radar for the defense research institution in Ottawa.…”

Section: （1）mentioning

confidence: 99%

Research progress of low resolution radar target recognition technology

Li¹,

Gao²,

Ma³

2015

Proceedings of the 4th International Conference on Mechatronics, Materials, Chemistry and Computer Engineering 2015

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Abstract. Radar is an electronic device for radio detection and ranging. High resolution radar ofultra wideband will be the developing trend of new generation radar.But because of the long project time, high manufacture cost and key technologies unsolved. Thus it cannot replace the low resolution radar in the short term.And this paper introduces the research status of low resolution radar target recognition.

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“…Noncooperative Target Recognition (NCTR) [20,21]: The high range-resolution offered by Senrad can be used to provide a form of limited NCTR based on the nature of the radar echo. The class of an aircraft target (that is, whether it is an F-15 or an F-18) is not easy to achieve in practical situations from the range profile alone [22,23].…”

Section: Performancementioning

confidence: 99%

Senrad: an advanced wideband air-surveillance radar

Skolnik

Linde

Meads

2001

IEEE Trans. Aerosp. Electron. Syst.

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The generic characteristics and performance of an experimental long-range air-surveillance radar, known at the Naval Research Laboratory as Senrad, is described. Its distinguishing feature is that it can operate with simultaneous transmissions over a very wide bandwidth-from 850 to 1400 MHz. The technology and type of experimental radar equipment employed are discussed and examples are given of its performance capabilities obtained by means of very wideband operation. The unusually wide bandwidth of this radar allows 1) improved detection and tracking performance because of the absence of the nulls that are common in the antenna elevation radiation-pattern of a single-frequency radar; 2) moving target indication (MTI) without loss of targets due to blind speeds and without the need for multiple PRFs (pulse repetition frequencies); 3) accurate height finding with a fan-beam radar by taking advantage of the multipath time difference as a function of target height; 4) a form of limited target recognition based on high range-resolution; and 5) a reduction of the effectiveness of electronic countermeasures that can seriously degrade more narrowband radars.

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Use of wideband waveforms for target recognition with surveillance radars

Cited by 7 publications

References 1 publication

Target classification with low-resolution radar based on dispersion situations of eigenvalue spectra

Target classification with low-resolution radar based on dispersion situations of eigenvalue spectra

Research progress of low resolution radar target recognition technology

Senrad: an advanced wideband air-surveillance radar

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