Nanosecond Gigawatt Radar: Indication of Small Targets Moving Among Heavy Clutters

Blyakhman, A.B.; Clunie, D.; Harris, Richard W.; Mesyats, G. A.; Petelin, M. I.; Postoenko, G.; Wardrop, B.

doi:10.1109/radar.2007.374191

Cited by 23 publications

(7 citation statements)

References 3 publications

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“…Accordingly to the dispersion characteristic of the backward wave (Fig. 6), a decrease in the velocity v leads to a decrease in the resonant frequency as well as to the synchronous frequency (2). The cavity reflects the operating TM 01 -mode saving its field structure.…”

Section: Bwo With the Operating Tm 01 -Modementioning

confidence: 92%

“…Because of this, the main problem is to create a microwave source of TE 11 -mode with linear polarization. To create a short pulse source of high power microwaves that enables one to recognize small targets moving amidst heavy clutter [2] we will develop a relativistic X-band backward wave oscillator (BWO). The short feedback loop in a BWO provides for fast start-of oscillations that is important for our planned experiments using the high current electron accelerator "SINUS-6" with voltage pulse duration 17 ns at the base.…”

Section: Introductionmentioning

confidence: 99%

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X-band tunable relativistic BWO with linearly polarized Gaussian radiation

Elfrgani

Prasad

Fuks

et al. 2012

2012 16th International Symposium on Electromagnetic Launch Technology

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To provide high power Gaussian radiation that is attractive for many applications an X-band 460 kV relativistic BWO is proposed in which a Bragg reflector with one-fold leftand right-spiral corrugations of its wall was applied in waveguide on the "cathode" end of the interaction space. Such a reflector converts the operating TM 01 -mode of the BWO to the forward TE 11 -mode with linear polarization that is extracted as a Gaussian microwave beam. Frequency tuning over 6% with radiation power ranging from 100 -350 MW is achieved (in computer simulations) by varying the guide magnetic field.

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Section: Bwo With the Operating Tm 01 -Modementioning

confidence: 92%

Section: Introductionmentioning

confidence: 99%

X-band tunable relativistic BWO with linearly polarized Gaussian radiation

Elfrgani

Prasad

Fuks

et al. 2012

2012 16th International Symposium on Electromagnetic Launch Technology

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show abstract

“…Wide-band radar transmits wide-band waveforms, such as direct short pulse [9,12], phase coding pulse, and linear frequency modulation (LFM) pulse. For all kinds of wide-band waveforms, HRRP can be obtained by matched filter, in other words, pulse compress.…”

Section: Signal Model Of Angle Estimation In Wideband Monopulse Radarmentioning

confidence: 99%

Maximum Likelihood Method and Cramer-Rao Low Bound of Angle Estimation for Wide-Band Monopulse Radar

Wang¹,

Huang²,

Jiang³

et al. 2018

PIER C

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The echo signal of wide-band monopulse radar spreads in multiple range cells. Thus, effective utilization of echo signal is an important issue for this kind of radar. Based on parameter estimation model, maximum likelihood method is proposed in this paper, which collects all the energy spreading in multiple range cells. Cramer-Rao low bound of angle estimation is deduced in theory. Simulation results demonstrate maximum likelihood method which performs better than both dominant scatter estimate method and weighted estimate method.

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“…The location of the prominent scatters has been filtered out, and no ATR algorithm is able to achieve reasonable operational features under these conditions. Moreover, due to the worldwide current social and political situation, there is an increasing interest in surveillance, classification and identification tasks, especially using unmanned vehicles, where millimeter-wave band and continuous-wave linear frequency modulation (CWLFM) signals have several advantages, such as their light weight, small size and good power requirements [22].…”

Section: Target Classification and Identificationmentioning

confidence: 99%

Instrumental CWLFM High-Range Resolution Radar in Millimeter Waveband for ISAR Imaging

et al. 2011

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This paper shows a High-Range Resolution (HRR) Radar prototype development, transmitting in millimeter-wave band. The waveform selected to be used is the continuous-wave linear frequency modulation (CWLFM), which allows, at the same time, good range resolution, moderate unambiguous doppler range and reasonable operational range taking into account that high-frequency band is used. The radar prototype looks for High-Range Resolution (HRR) characteristics as well as flexibility, in order to obtain the best Inverse Synthetic Aperture Radar (ISAR) images possible depending on the applications and targets involved. That is, depending on the speed and target's trajectories, some radar features, such as transmitted bandwidth, modulator frequency or sampling frequency, play a key role in obtaining the best possible results while using lowest electrical requirements.In Section IV, several different ISAR images are shown, pointing out not only the radar features achieved and their variety, but also their quality thanks to the hardware and electronics improvements developed.Index Terms-Continuous-wave linear frequency modulation (CWLFM), doppler processing, high-range resolution (HRR), inverse synthetic aperture radar (ISAR) images, millimeter waveband, RF zoom scheme.

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Nanosecond Gigawatt Radar: Indication of Small Targets Moving Among Heavy Clutters

Cited by 23 publications

References 3 publications

X-band tunable relativistic BWO with linearly polarized Gaussian radiation

X-band tunable relativistic BWO with linearly polarized Gaussian radiation

Maximum Likelihood Method and Cramer-Rao Low Bound of Angle Estimation for Wide-Band Monopulse Radar

Instrumental CWLFM High-Range Resolution Radar in Millimeter Waveband for ISAR Imaging

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