Robust Separation of Background and Target Signals in Radar Cross Section Measurements

Muth, Lorant A.; Wang, C.M.; Conn, Timothy

doi:10.1109/tim.2005.858126

Cited by 34 publications

(15 citation statements)

References 9 publications

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“…In RCS measurements, complex scattering signals including the target and background are separated by the method introduced in [2][3][4], which utilizes multiple measurements during target translation along the direction of the incidence plane wave and circle fitting to process the raw measured data. The inner structure of the metal pylon is simplified as a hollow one with uniform wall thickness and is manufactured using a single homogenous material.…”

Section: Applicable Conditionsmentioning

confidence: 99%

“…The phase of the scattered electric field of the target changes as the target translates during the measurement. So the measured data trace a circle or an arc in the complex plane, whose radius represents the amplitude of the scattering electric field of the target, and the position of the center represents the scattering electric field of the background including the metal pylon [2]. Notably, the method demands the background signal be basically stable during measurement to ensure that the center of the complex circle does not translate significantly for circle-fitting accuracy.…”

Section: Mechanism Of the Circle-fitting Error Caused By Metal Pylon mentioning

confidence: 99%

“…Reference [2] used the aforementioned method to measure a low-RCS target at 2.8 GHz, when the background and target RCS were of the same magnitude, and the target was a light weight arrow model. If the test target is heavy, the load status before and after translation will exhibit an evident difference.…”

Section: Mechanism Of the Circle-fitting Error Caused By Metal Pylon mentioning

confidence: 99%

“…The target can change its azimuth and pitch angles through the rotator motion to expand the test pose. Some new rotators can also provide the target with a translation movement parallel to the direction of the plane wave, for separating the echo signal of the target from the background signal by circle fitting of the measured data [2][3][4].…”

Section: Introductionmentioning

confidence: 99%

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An Efficient Analysis on the Fitting Error Caused by the Deformation of Metal Pylon in the RCS Measurement

An¹,

Chen²

2016

PIER M

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Abstract-Target-supporting metal pylon predominantly contributes to background scattering in radar cross section measurement. The separation of scattering from the target and background demands stable background scattering. However, target translation creates variations in metal pylon deformation and changes its scattering, which yields errors in background separation. Analyzing the relationship between the structural parameters of metal pylon and the error caused by its deformation is necessary to reduce errors. A simplified mapping of the relationship is deduced according to the mechanical and electromagnetic theories involved. The approach combines geometrical theory of diffraction for pylon scattering and numerical integration in calculating the deflection of metal pylon to determine the variation of metal pylon scattering, and calculates error in the circle fitting caused by the variation. Simulations with commercial software are employed to verify the efficiency of the numerical model. Although it is slightly contaminated by target-pylon interaction, the approach is 800 times faster than the software simulation. An example of optimization and analysis is provided to demonstrate the trends of optimum structural parameters and fitting error within different pylon weight limits. Such an example proves that the approach can overcome the deficiency of traditional analysis which separately assesses the mechanical and RCS performances of metal pylon.

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Section: Applicable Conditionsmentioning

confidence: 99%

Section: Mechanism Of the Circle-fitting Error Caused By Metal Pylon mentioning

confidence: 99%

Section: Mechanism Of the Circle-fitting Error Caused By Metal Pylon mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

An Efficient Analysis on the Fitting Error Caused by the Deformation of Metal Pylon in the RCS Measurement

An¹,

Chen²

2016

PIER M

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“…For this reason, equipment designed for this purpose is hard to find and expensive. However, sometimes designers can use inexpensive technologies to solve the problem of measuring waveforms with very complex characteristics [15], [16]. For example, not long ago, if real-time data acquisition and signal processing was involved, it was difficult and very expensive to save a large amount of data.…”

Section: Test Setupmentioning

confidence: 99%

Low-Cost Measurement for a Secondary Mode S Radar Transmitter

Parra-Cerrada

González-Posadas

Jiménez-Martín

et al. 2015

IEEE Trans. Instrum. Meas.

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Abstract-Alow-cost, multiple-purpose, and high-precision timing test setup for the measurements of secondary Mode S radar transmission signal was proposed. The goal was to fully guarantee compliance of the proposed transmitter under test with the really hard International Civil Aircraft Organization requirements using traditional measurement equipment, which was difficult or even impossible to ensure up to now. The low-cost structure proposed in this paper allows the user to perform measurements independently of the measurements performed by the pieces of test equipment shelled by the manufacturer of radar, which is a very important aspect since the independence of the verifications is a mandatory requirement established by the safety standards of civil aviation. The proposed setup has been used to verify several transmitters with some defects that are not detected by monopulse secondary surveillance radar specific pieces of test equipment that are focused on more high-level functionalities. It also is valid and it has been used, as a general-purpose setup, for testing other radio navigation aids. Index Terms-Commercial-off-the-shelf(COTS) equipment, differential phase shift keying, envelope and phase measurements, global positioning system disciplined oscillator (GPSDO), Mode S radar, monopulse secondary surveillance radar (MSSR), radar measurements, transmitter measurements.

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Blind and Semi-blind Anechoic Mixing System Identification Using Multichannel Matching Pursuit

Haddad

Lovisolo

Petraglia

et al. 2021

Circuits Syst Signal Process

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Robust Separation of Background and Target Signals in Radar Cross Section Measurements

Cited by 34 publications

References 9 publications

An Efficient Analysis on the Fitting Error Caused by the Deformation of Metal Pylon in the RCS Measurement

An Efficient Analysis on the Fitting Error Caused by the Deformation of Metal Pylon in the RCS Measurement

Low-Cost Measurement for a Secondary Mode S Radar Transmitter

Blind and Semi-blind Anechoic Mixing System Identification Using Multichannel Matching Pursuit

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