Pseudo Chirp-Barker-Golay coded excitation in ultrasound imaging

Wang, Mingquan; Cong, Shan; Shi, Z.

doi:10.1109/ccdc.2018.8407824

Cited by 18 publications

(3 citation statements)

References 16 publications

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“…However, they only used finite types of codes which are 3-bit Barker code, 8-bit Golay code pair and 3-bit Barker code modulated 4-bit Golay code pair in their experiment [2]. Recently, Wang and Cong [9] proposed a new pseudo Chirp-Barker-Golay (PCBG) coded excitation method in ultrasound imaging. They used the Field II toolbox to simulate phantom and cyst phantom of B-mode image.…”

Section: Related Workmentioning

confidence: 99%

Convolution of Barker and Golay Codes for Low Voltage Ultrasonic Testing

et al. 2019

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Ultrasonic Testing (UT) is one of the most important technologies in Non-Detective Testing (NDT) methods. Recently, Barker code and Golay code pairs as coded excitation signals have been applied in ultrasound imaging system with improved quality. However, the signal-to-noise ratio (SNR) of existing UT system based on Barker code or Golay code can be influenced under high high attenuation materials or noisy conditions. In this paper, we apply the convolution of Barker and Golay codes as coded excitation signals for low voltage UT devices that combines the advantages of Barker code and Golay code together. There is no need to change the hardware of UT system in this method. The proposed method has been analyzed theoretically and then in extensive simulations. The experimental results demonstrated that the main lobe level of the code produced by convolution of Barker code and Golay code pairs is much higher than the simple pulse and the main lobe of the combined code is higher than the traditional Barker code, sidelobe is the same as the baker code that constitutes this combined code. So the peak sidelobe level (PSL) of the combined code is lower than the traditional Barker code. Equipped with this, UT devices can be applied in low voltage situations.

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Section: Related Workmentioning

confidence: 99%

Convolution of Barker and Golay Codes for Low Voltage Ultrasonic Testing

et al. 2019

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“…The combined codes, which are 3-bit Barker code, 8-bit Golay code pair and 3-bit Barker code modulated 4-bit Golay code pair, were used in their ultrasound imaging experiments. Recently, Wang and Cong proposed a new pseudo-Chirp-Barker-Golay (PCBG) coded excitation method for ultrasound imaging [15]. They used the Field II toolbox to simulate phantom and cyst phantom of B-mode image.…”

Section: Introductionmentioning

confidence: 99%

Hybrid Coded Excitation of the Torsional Guided Wave Mode T(0,1) for Oil and Gas Pipeline Inspection

et al. 2022

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Ultrasonic guided wave testing is an essential technique in non-destructive testing for structural integrity of oil and gas pipelines. This technique, based on the pulse-echo method, is often used for the long-range detection of pipelines at any location. However, guided waves suffer from high attenuation when they propagate in attenuative material structures and multiple wave modes due to the excitation, which reduces the power of echo signals and induces corruption caused by coherent noise. In this paper, a developed hybrid coded excitation method that uses the convolution of a Barker code and Golay code pair is proposed and applied for an ultrasonic guided wave testing system to excite the torsional guided wave mode T(0,1) in a steel pipe. The proposed method combines the advantages of these two coding methods and increases the flexibility of code lengths. The performance is evaluated by signal to noise ratio and peak sidelobe level of the processed signal. Both theoretical simulations and experiments have investigated using the proposed codes composed of Barker codes and Golay code pairs of different lengths and combinations. The experimental results show the significant improvement of the signal to noise ratio and the peak sidelobe level due to the proposed hybrid code usage for the excitation of guided waves. The values are further improved to around 32 dB and around −24 dB, respectively. Overall, the proposed hybrid coded method for improving the echo SNR can benefit from guided wave testing to reduce coherent and random noise levels and many other potential applications.

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“…Wireless real-time data protection, compression and transmission systems with defined parameters are described in [3,5]. An algorithm for finding and correcting interference based on Barker-like sequences is shown in [9,25,26]. In [10,20], real-time operation for simultaneous radar and spatial protected communications is justified.…”

Section: Introduction and Literature Reviewmentioning

confidence: 99%

Synthesis of Barker-Like Codes with Adaptation to Interference

Riznyk

Tsmots

Martsyshyn

et al. 2021

Lecture Notes in Computational Intelligence and Decision Making

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Interference immunity is one of the important characteristics of data reception/transmission systems. Increasing immunity to interference at fixed transmit/receive rates is a current issue, e.g. for drone control. The investigated Barker-like code (BLC) sequences allow increasing the power of the received sequences due to the use of mirror interferenceresistant code sequences. The increase in data transmission interference is achieved by increasing the length and power of the interference-resistant codec sequence used to transmit a single message. Interference immunity is one of the important characteristics of data reception/transmission systems. Increasing immunity to interference at fixed transmit/receive rates is a current issue, e.g. for drone control. The advantages of these sequences (e.g. high immunity to high power narrow-band interference, code-based subscriber separation, transmission stealth, high resistance to multipath, high resolution in navigation measurements) will have wide practical application in communication and geolocation systems. The paper improves the method of synthesis of interference-resistant BLC sequences using ideal ring beams. An improved method for quickly finding such interference-resistant code sequences that are capable of finding and correcting errors according to the length of the resulting code sequence is considered. Implemented an algorithm for quickly finding such interference-resistant Barker-like coding sequences that are capable of finding and correcting errors according to the length of the resulting code sequence in a large volume. A simulation model of interferenceresistant BL coding using ideal ring bundles is developed. The software implementation of the simulation model of the noise-resistant Barker-like coding (on finding and correcting errors in the obtained noise-resistant BLC sequences) has been carried out. The proposed noise-correcting BLC sequences have practical value, since with the help of the obtained code sequence is quite simple and fast to find (up to 50%) and correct (up to 25%) distorted characters (of the length of the noise-correcting code sequence).

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Pseudo Chirp-Barker-Golay coded excitation in ultrasound imaging

Cited by 18 publications

References 16 publications

Convolution of Barker and Golay Codes for Low Voltage Ultrasonic Testing

Convolution of Barker and Golay Codes for Low Voltage Ultrasonic Testing

Hybrid Coded Excitation of the Torsional Guided Wave Mode T(0,1) for Oil and Gas Pipeline Inspection

Synthesis of Barker-Like Codes with Adaptation to Interference

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