Calibration procedures of a stepped frequency continuous wave radar for landmines detection

Nicolaescu, L.; Genderen, P. van; Palmer, K.D.

doi:10.1109/radar.2003.1278777

Cited by 9 publications

(9 citation statements)

References 1 publication

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“…When compared to the calibration equations in Mikhnev and Vainikainen, Nicolaescu, Hauschild and Knochel and Dong (Dong, 1985;Hauschild and Knochel, 1998;Mikhnev and Vainikainen, 2003;Nicolaescu et al, 2003), Eq. (2) introduces two new calibration parameters.…”

Section: The Theory Of Integrated System Calibration Methodsmentioning

confidence: 99%

“…Their method, however, is not precise and so differs significantly from the real signal. A group of papers (Hauschild and Knochel, 1998;Mikhnev and Vainikainen, 2003;Nicolaescu et al, 2003) investigated the antenna calibration procedure of the continuous wave radar based on S-parameters. Gentili and Spagnolini proposed a GPR antenna modeling procedure based on electromagnetic (EM) inversion (Gentili and Spagnolini, 2000).…”

Section: Introductionmentioning

confidence: 99%

“…The calibration based on S-parameters (Dong, 1985;Hauschild and Knochel, 1998;Mikhnev and Vainikainen, 2003;Nicolaescu et al, 2003) is a more effective antenna calibration method than methods that only remove direct coupled waves (Cheadle et al, 1999;Cheeseman and Huang, 2006) or only calculate the impulse response functions of antennas (Hantscher et al, 2006). The S-parameter calibration can more successfully eliminate the influence of most factors including multiple reflections.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Novel integrated system calibration method for impulse ground penetrating radar

Huang¹,

Lü²,

Zhu³

2011

Journal of Applied Geophysics

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Section: The Theory Of Integrated System Calibration Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Novel integrated system calibration method for impulse ground penetrating radar

Huang¹,

Lü²,

Zhu³

2011

Journal of Applied Geophysics

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“…Both range compression and azimuth compression utilize Fast Fourier Transform (FFT) algorithms and Inverse Fast Fourier Transform (IFFT) in order to perform convolution with respective reference signal [2]. Thus FFT and IFFT are the core of the SAR image formation process [1].…”

Section: Problem Definitionmentioning

confidence: 99%

Enhancing SAR image formation using superimposed FFT

Abdul-Latif

Pennock

2012

2012 IEEE International Geoscience and Remote Sensing Symposium

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This paper discusses the effect of superimposed-Fast Fourier Transforms on synthetic aperture radar (SAR) image formation. In a Fourier Transform, the band-limited property in measured signals causes relatively high sidelobes, which tends to corrupt the "target" or "Image" detected. One technique to reduce side-lobes is windowing; nonetheless, this will also have a broadening effect on the main-lobe. The proposed technique of superimposition attempts to reduce sidelobes while not broadening the target's main-lobe much. Furthermore, the superimposition technique preserves the amplitude of the targets' main-lobe while conventional sharpening techniques tend to distort it in one way or another. Results show minimal resolution loss, significant sidelobe reduction and negligible distortion of peak position and amplitude from the original spectrum.

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“…It supposes to use a single reference, a metallic plate, located at a certain distance of the antenna system [6]. In this case the transmitted signal is given by (1) and the received signal can be calculated using (2).…”

Section: Single Reference Calibration Proceduresmentioning

confidence: 99%

Ultra wideband spiral antenna - time delay removal

Nicolaescu

Genderen²

2006

2006 First European Conference on Antennas and Propagation

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This paper deals with the time delay removal of an Archimedean spiral antenna which operates from 400 MHz to 4845 MHz. As it is known, spiral antennas show a dispersive behavior, thus, in time domain, a "chirp" pulse will be displayed at the output. For time delay removal two procedures are investigated: the first one uses an error-term flow graph for the frequency signal as for Vector Network Analyzers while the second one supposes to place a reference metallic plate at a certain distance in order to identify the phase dispersion given by the antenna. In the second case the received signal is passed in time domain by applying an ifft, the multiple reflection are removed and the phase variation due to the time propagation is subtracted. After phase correction the time domain response as well as the side lobes level are decreased. The antenna system made up of two Archimedean spirals is employed by a stepped frequency continuous wave radar (SFCW) which works with a frequency step of 35 MHz.

show abstract

Calibration procedures of a stepped frequency continuous wave radar for landmines detection

Cited by 9 publications

References 1 publication

Novel integrated system calibration method for impulse ground penetrating radar

Novel integrated system calibration method for impulse ground penetrating radar

Enhancing SAR image formation using superimposed FFT

Ultra wideband spiral antenna - time delay removal

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