Radar target scattering matrix measurement through orthogonal signals

Giuli, Dino; Fossi, M.; Facheris, Luca

doi:10.1049/ip-f-2.1993.0033

Cited by 70 publications

(45 citation statements)

References 10 publications

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“…This is the signal as discussed above. The carrier codes a 2k correspond with either a k,H or a k,V in equation (3). The codes a 2k+1 correspond with the other one.…”

Section: I S I G N a L D E S C R I P T I O Nmentioning

confidence: 99%

Some OFDM waveforms for a fully polarimetric weather radar

Genderen

Krasnov

Wang

et al. 2012

Int. j. microw. wirel. technol.

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Some OFDM waveforms for a fully polarimetric weather radar piet van genderen, oleg a. krasnov, zongbo wang and recep firat tigrekRetrieval of cloud parameters in weather radar benefits from polarimetric measurements. Most polarimetric radars measure the full backscatter matrix (BSM) using a few alternating polarized sounding signals. Using specially encoded orthogonal frequency division multiplexing (OFDM) signals however, the BSM can be measured in a single simultaneous transmission of two orthogonally polarized signals. Based on a set of parameters for weather radar, the properties of such a signal are explored and its merit as a useful capability is shown.

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“…This is the signal as discussed above. The carrier codes a 2k correspond with either a k,H or a k,V in equation (3). The codes a 2k+1 correspond with the other one.…”

Section: I S I G N a L D E S C R I P T I O Nmentioning

confidence: 99%

Some OFDM waveforms for a fully polarimetric weather radar

Genderen

Krasnov

Wang

et al. 2012

Int. j. microw. wirel. technol.

View full text Add to dashboard Cite

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“…The isolation problem in case of one point target has been originally studied in [5], where the performance analysis of the radar system with dual-orthogonal signals has been done using two parameters -peak sidelobe level (PSL) and isolation (I). They are defined as…”

Section: I T H E P a R S A X R A D A Rmentioning

confidence: 99%

Basics and first experiments demonstrating isolation improvements in the agile polarimetric FM-CW radar – PARSAX

Krasnov

Babur

Wang

et al. 2010

Int. J. Microw. Wireless Technol.

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Basics and first experiments demonstrating isolation improvements in the agile polarimetric FM-CW radar -PARSAX oleg a. krasnov, galina p. babur, zongbo wang, leo p. ligthart and fred van der zwanThe article describes the IRCTR PARSAX radar system, the S-band high-resolution Doppler polarimetric frequency modulated continuous wave (FM-CW) radar with dual-orthogonal sounding signals, which has the possibility to measure all elements of the radar target polarization scattering matrix simultaneously, in one sweep. The performance of such radar depends of the level of sounding signals orthogonality. In the main operational mode, the radar will be used for atmospheric remote sensing and polarimetric studies of ground-based targets. In such mode it will use a pair of synchronous linearly-frequency modulated (LFM) continuous signals with opposite frequency excursions of 50 MHz and duration of 1 ms. Such a combination of sounding signals has limited orthogonality even for huge BT-products, which produce cross-channel interferences. These interferences in case of radar scene with multiple pointed and distributed targets can completely degrade radar operational performance. In this article, we propose simple and effective technique to suppress interferences and to restore radar performance. The technique has been tested using simulation and has been implemented in multi-channel digital receiver of the PARSAX radar. The real radar measurements presented to illustrate effectiveness of cross-channel interferences suppression. The proposed technique can be useful not only for polarimetric radar design, but also in much wide radar applications, which use waveforms with high orthogonality.

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“…The sounding signals are the LFM signals with opposite frequency slopes (up-going and down-going) used for simultaneous measurement of scattering matrix elements [1,2]: Each signal scattered by radar object undergoes a number of modifications connected with the scattering properties of the object. The distance to the observed object determines the roundtrip time delay for the received signals.…”

Section: A De-ramping Processingmentioning

confidence: 99%

“…Polarimetric radar allows the utilization of complete electromagnetic vector information about observed objects [1]. It is based on the fact that in general any radar object (or any resolution cell) can be described by an 2х2 scattering matrix (SM) with four time-variable complex elements describing amplitude, phase and polarization transformation of a wave scattering radar object.…”

Section: Introductionmentioning

confidence: 99%

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Design and implementation of cross-channel interference suppression for polarimetric LFM-CW radar

et al. 2010

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This paper presents design and practical implementation of the method for cross-channel interference suppression in polarimetric LFM-CW radar with dual-orthogonal sounding signals. Simultaneously transmitted and received signals have limited orthogonality, what results in the interfering signals in the processing channels of the radar receiver. The suppression of the interfering signals is implemented in real time, characterized by simplicity and low increase of computational resources. The efficiency of the cross-channel interference suppression is demonstrated experimentally.

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Radar target scattering matrix measurement through orthogonal signals

Cited by 70 publications

References 10 publications

Some OFDM waveforms for a fully polarimetric weather radar

Some OFDM waveforms for a fully polarimetric weather radar

Basics and first experiments demonstrating isolation improvements in the agile polarimetric FM-CW radar – PARSAX

Design and implementation of cross-channel interference suppression for polarimetric LFM-CW radar

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