Intelligent Adaptive Filtering Algorithm for Electromagnetic-Radiation Field Testing

Liu, Sheng; Wang, Bangmin; Zhang, Lanyong

doi:10.1109/temc.2017.2656896

Cited by 11 publications

(15 citation statements)

References 25 publications

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“…Adaptive filters can be described as variable transfer functions defined in the Z-Transform domain, H(z) [17]. Their use for emissions measurement improvements in OATS and antenna design has been recently documented [6,5,18]. In 7 One important aspect of an adaptive filter design concerns the definition of an adaptive algorithm and its parameters specification.…”

Section: Adaptive Filtering 130mentioning

confidence: 99%

“…Such limitations reinforce the need for more robust techniques. In a recent paper about the use of AFs on an OATS EMC test called radiated emissions, Sheng et al [6] propose a configuration based on the particle swarm optimization (PSO) method. In fact, the PSO is being increasingly applied to AF problems [19,20,21] in a variety of ways.…”

Section: Adaptive Filtering 130mentioning

confidence: 99%

“…In order to address these issues, Arnd Frech [4,5] proposes a real-time acquisition system that operates in the time domain. On the other hand, Sheng [6] proposes to split the wide band signal into several narrower band components through a wavelet transform unit. This leads to a parallel processing of the resulting components, which increases the overall efficiency of the signal processing structure.…”

Section: Introductionmentioning

confidence: 99%

“…2. a new fitness function for the parameter selection mechanism described in [6] for adaptive filters and;…”

Section: Introductionmentioning

confidence: 99%

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Improving antenna gain estimations in non-ideal test sites with auto-tunable filters

et al. 2020

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Estimating the gain of an antenna prototype is an important step during both design and validation phases. Nevertheless, many small technology companies and universities are not provided with adequate infrastructure to run this type of test. In this paper, we propose a computational tool to deal with undesirable contributions coming from non-ideal test conditions over electromagnetic measurements. It is based on auto-tunable filters and therefore it allows a lab technician to run the test without a major knowledge on signal processing. After a series of evaluations based on lab measurements, the proposed tool gives results as good as those provided by two other approaches but with a reduction of the total number of experimental runs. Furthermore, it is more efficient than the traditional time gating approach for low signal-to-noise ratio environments. Finally, a validation with different antennas and test sites confirmes its robustness.

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Section: Adaptive Filtering 130mentioning

confidence: 99%

Section: Adaptive Filtering 130mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…2. a new fitness function for the parameter selection mechanism described in [6] for adaptive filters and;…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Improving antenna gain estimations in non-ideal test sites with auto-tunable filters

et al. 2020

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“…The difficulty of on-site measurement is related to the filtering of the environmental background noise. The most common methods for on-site EMR testing include the use of virtual anechoic chambers [1], beamforming spatial filtering [2] and, multichannel blind source separation. Unlike singledevice on-site EMR measurements where the filtering of environmental background noise is the main concern, interdevice interference between multiple devices must also be accounted for in on-site IEP system EMR measurements.…”

Section: Introductionmentioning

confidence: 99%

A Method for Blind Source Separation of Multichannel Electromagnetic Radiation in the Field

2020

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Considering the multichannel instability, spectral overlap and strong interference of electromagnetic radiation signals in the integrated electric propulsion systems of ships, a new method is proposed which combines multivariate empirical mode decomposition (MEMD) with independent component analysis (ICA) for synchronous blind source separation of multichannel electromagnetic radiation in the field. In order to construct virtual channels, noise-aided MEMD is first applied to decompose multichannel data in this approach. Then the comprehensive screening algorithm is used to filter the intrinsic mode functions (IMFs) produced by the decomposition procedure. Finally, the new multivariate input signal is analyzed after screening using ICA to obtain the original electromagnetic radiation source signal. This method is able to effectively addresses several limitations of EMD including the mode mixing problem, its inability to handle multichannel data, as well as the indeterminacy problem in ICA. The efficacy of the MEMD-ICA algorithm was evaluated using simulated signals and real world data from a cruise ship, and comparing ensemble empirical mode decomposition-ICA(EEMD-ICA). INDEX TERMS Blind source separation, electromagnetic environment, independent component analysis, integrated electric propulsion system, multivariable empirical mode decomposition.

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Measurement method for electromagnetic radiation generated during a high-capacity warhead explosion

Cui

Kong

Jian

2023

Meas. Sci. Technol.

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To study the impact of explosion electromagnetic radiation on electronic equipment and to improve the anti-interference ability of electronic equipment in an explosion electromagnetic environment, it is necessary to understand the characteristics and laws of explosion electromagnetic radiation. An explosive electromagnetic measurement test is necessary to study this problem. In view of the measurement conditions of the explosive field and the interference factors in the process of a warhead explosion, protection and improvement measures have been proposed. It designs a repeater to compensate for excessive transmission loss of explosive electromagnetic signal. It enhances the anti-interference ability of the measurement system by adopting electromagnetic shielding methods for signal transmission cables. The closed aperture method was used to solve the field line coupling problem in the measurement system. By analyzing the law of seismic wave propagation, equivalent simulation test of instrument vibration and optimization of test point layout, which are conducted to deal with adverse effects such as explosive seismic wave and fragment strike. Finally, an electromagnetic radiation measurement method suitable for the environment of a high-capacity warhead explosive field has been formed.

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Intelligent Adaptive Filtering Algorithm for Electromagnetic-Radiation Field Testing

Cited by 11 publications

References 25 publications

Improving antenna gain estimations in non-ideal test sites with auto-tunable filters

Improving antenna gain estimations in non-ideal test sites with auto-tunable filters

A Method for Blind Source Separation of Multichannel Electromagnetic Radiation in the Field

Measurement method for electromagnetic radiation generated during a high-capacity warhead explosion

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