A High Signal–Noise Ratio UWB Radar for Buried Pipe Location Using Golay Complementary Sequences

Li, Jingxia; Liu, Yang; Xu, Hang; Wang, Bingjie; Liu, Li; Chen, Xinpeng

doi:10.3390/app9235090

Cited by 10 publications

(4 citation statements)

References 42 publications

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“…Using a single transmitting and receiving antenna, SAR achieves high azimuth resolution. This attribute has proven beneficial for applications such as ground penetrating radar (GPR) and various vehicular and airborne operations [106]- [109]. The principle underlying SAR can be mathematically described by the radar equation for SAR, which is:…”

Section: B Mimo Radar Based Human Motion Detectionmentioning

confidence: 99%

Advancements in UWB-Based Human Motion Detection Through Wall: A Comprehensive Analysis

Pardhu,

Kumar,

Kumar

et al. 2024

IEEE Access

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Ultra-wide Band (UWB) technology has emerged as a pivotal tool for human motion detection, finding applications in diverse areas ranging from smart homes to automotive safety. This paper presents a comprehensive survey of methodologies employed in UWB-based motion detection, elucidating their strengths, challenges, and performance metrics. While several methods, including Convolutional Neural Network (CNN) approaches, have been explored, challenges such as motion state overlaps, the necessity for enhanced spatial resolution, and background noise interference persist. Among the various methods analyzed, the SGWO-based RMDL technique emerges as a frontrunner, offering superior accuracy, reduced mean squared error, and impressive true negative and positive rates. Moreover, its computational efficiency sets a precedent in human motion detection. This paper provides insights into the state-of-the-art Through the wall imaging and human vital signs observation for future research and realtime applications.

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Section: B Mimo Radar Based Human Motion Detectionmentioning

confidence: 99%

Advancements in UWB-Based Human Motion Detection Through Wall: A Comprehensive Analysis

Pardhu,

Kumar,

Kumar

et al. 2024

IEEE Access

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“…The AM of signals also has a wide practical application for radar systems [ 20 , 21 , 22 , 23 ], as well as for communication systems [ 24 ], for example, when generating ultra-wideband signals modulated in amplitude by Barker codes or an M-sequence [ 20 , 21 , 23 ], including with different values of the levels of elementary pulses of codes [ 22 ].…”

Section: Analysis Of the Level Of Side Lobes Of Modified Barker Codes...mentioning

confidence: 99%

Search and Study of Marked Code Structures for a Spatially Distributed System of Small-Sized Airborne Radars

Nenashev,

Nenashev

2023

Sensors

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When forming the radar situation of a terrain, in order to increase its information content and to extract useful information, multi-position spatially distributed systems for integrating multi-angle radar data established by small-sized UAV-based airborne radars are used. In this case, each radar station belonging to a multi-position system as a probing signal must have its own unique marked signal. Such a setup will allow the signals reflected from ground objects and zones to be “attached” to specific receiving-transmitting positions of the multi-position system. This requirement results from the fact that each transceiver position emits one probing signal, and then receives all the echo signals reflected from the underlying surface and previously emitted by other radar devices of the multi-position system. Such a setup of multi-position systems requires the researcher to look for and investigate specialized systems of marked code structures used to modulate the probing signals in order to identify them in a joint radar channel. Thus, the problem at hand is how to look for and investigate novel marked code structures used to generate a system of probing signals, the use of which will allow it to be “attached” to a specific receiving-transmitting position of a multi-position onboard system and to identify them in a joint radar channel in the course of the remote sensing of the underlying surface. The purpose of this work is to conduct a study on the subject of the squeak and choice of a system of code structures that have a low level of side lobes of autocorrelation functions and uniformly distributed values of the levels of the cross-correlation function. To achieve this goal, the relevance of the study is substantiated in the introduction. The second section analyzes the level of side lobes for classical and modified Barker codes with an asymmetric alphabet. On the basis of this analysis, it was concluded that it is expedient to apply this approach for codes longer than Barker codes. Therefore, in the third section, the features of the generation of M-sequences are considered. The fourth section presents a technique for searching for new marked code structures, taking into account their mutual correlation properties for modifying M-sequences in order to implement multi-positional systems. The fifth section presents computer experiments on the search for marked code structures based on the modifications of M-sequences and presents the numerical characteristics of the correlation properties of the considered marked codes. And finally, in the sixth section, the final conclusions of the study are presented and recommendations are given for their further practical application. The practical significance of this study lies in the fact that the proposed new marked code structures are necessary for the synthesis of probing signals in the implementation of spatially distributed systems that function for the high-probability detection and high-precision determination of the coordinates of physical objects and are also necessary for the formation of radar images in a multi-position mode.

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“…Traditionally, certain approaches are used to modulate these signals [13,14] and, consequently, to achieve a high fidelity of signal detection in ambient noise. This is particularly relevant with a sequence of codes.…”

Section: Modified Barker Codesmentioning

confidence: 99%

Modified Nested Barker Codes for Ultra-Wideband Signal–Code Constructions

Nenashev,

Bestugin,

Rabin

et al. 2023

Sensors

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Currently, various applications of ultra-wideband signal–code constructions are among the most vibrant technologies, being implemented in very different fields. The purpose of this research consists of analyzing Barker codes and searching for the optimal nested representations of them. We also aim to synthesize signal–code constructions based on the tenets of nesting of alternative modified Barker codes, which employ an asymmetric alphabet. The scientific merit of the paper is as follows: on the basis of new analytic expressions, modified nested codes and signal–code constructions were obtained, applicable for the establishment of the unambiguous association of the component values of the nested codes with any lobes of the normalized autocorrelation function. With these analytical expressions, we are, hence, able to determine the values of the binary asymmetrical components of the nested codes related to the side lobes of the normalized autocorrelation function. In this way, we clearly obtain better (low) levels for these lobes than by using the autocorrelation function, as established by the equivalent conventional Barker codes, including the nested constructions. Practical application of these modulated ultra-wideband signals ensures improved correlational features, high-fidelity probabilistic detection, and more precise positional detection of physical bodies depending on the range coordinate.

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A High Signal–Noise Ratio UWB Radar for Buried Pipe Location Using Golay Complementary Sequences

Cited by 10 publications

References 42 publications

Advancements in UWB-Based Human Motion Detection Through Wall: A Comprehensive Analysis

Advancements in UWB-Based Human Motion Detection Through Wall: A Comprehensive Analysis

Search and Study of Marked Code Structures for a Spatially Distributed System of Small-Sized Airborne Radars

Modified Nested Barker Codes for Ultra-Wideband Signal–Code Constructions

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