A hardware design for time delay estimation of TDOA

Long, Qiang; Xia, Wei; Zhang, Yanxiong; Xiang, Jing; He, Zishu

doi:10.1109/icspcc.2013.6664135

Cited by 3 publications

(3 citation statements)

References 7 publications

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“…Let us note that, assuming convergence (5), it is worth choosing coefficients k n in (6) in such a way that…”

Section: Algorithm With the Adaptive Lms Filtermentioning

confidence: 99%

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Comparative Study of Basic Time Domain Time-Delay Estimators for Locating Leaks in Pipelines

Faerman¹,

Avramchuk²

2020

IJNDC

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The article is devoted to a survey of the known basic Time-Delay Estimation (TDE) methods in the application for detecting fluid leaks in pipeline transport and distribution systems. In the paper, both active and passive estimation methods are considered with respect to the presented generalized classification. However, the main attention is paid to the study of passive methods and their algorithmic implementation. Among the passive methods the Absolute Difference Function (ADF) minimizing algorithms, the Basic Cross-Correlation (BCC) algorithm, the adaptive Least Mean Square (LMS) filtering algorithm are implemented, investigated and compared using a mathematical model of a leak noise signal. All the algorithms are described and the results of the comparison are provided. The advantage of the LMS algorithm in processing the noisy signals is shown. However, its implementation requires choosing a convergence parameter. The necessity in choice of the additional parameter makes the LMS algorithm less practically applicable than the BCC algorithm. The ADF algorithm showed the lowest noise resistivity and can be considered as useful for signal detection, but not for TDE. Some conclusions regarding algorithms' use for solving the problem of locating leaks are stated. In particular, correlation-based TDE algorithms, as generalized cross-correlation and time-frequency cross-correlation, appear to be the best choice for the implementation of leak detection software.

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“…Let us note that, assuming convergence (5), it is worth choosing coefficients k n in (6) in such a way that…”

Section: Algorithm With the Adaptive Lms Filtermentioning

confidence: 99%

“…Although the paper focuses on the study of passive TDE methods [3] used to locate leaks, active methods are also briefly discussed in the subsequent section. The discussion is essential for a better understanding of the peculiarities and algorithmic implementation of the passive methods [5,6].…”

Section: Introductionmentioning

confidence: 99%

Comparative Study of Basic Time Domain Time-Delay Estimators for Locating Leaks in Pipelines

Faerman¹,

Avramchuk²

2020

IJNDC

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“…En general, los cálculos de los algoritmos son divididos entre la FPGA que paraleliza el procesamiento de operaciones como la FFT; mientras que el DSP facilita la implementaciones de operaciones con matrices. El empleo conjunto de FPGA y DSP es planteado por Li et al (2013) con técnicas TDoA sobre un sistema de múltiples nodos sincronizados con GPS. Cada nodo consta de una antena, una FPGA y un DSP, conectados a una computadora central vía Ethernet que obtiene la información de todas las estaciones y realiza los cálculos para la estimación.…”

Section: Configuraciones Híbridasunclassified

Implementaciones en Hardware de técnicas de Radiogoniometría

Sánchez

Redondo

García

et al. 2016

Ingeniería y Región

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ResumenEn este artículo se presenta una revisión bibliográfica y un análisis comparativo de implementaciones en hardware de técnicas de Radiogoniometría, también conocidas como Radio Direction Finding (RDF), que permiten identificar la mejor opción para implementar estas funcionalidad en actividades de gestión del espectro en países en vía de desarrollo. Dentro de las implementaciones tratadas se incluyen técnicas clásicas como Pseudo-Doppler y técnicas avanzadas de alta resolución como MUSIC. Se presentan diferentes alternativas de hardware para realizar las implementaciones las cuales incluyen SDR (Software Defined Radio), FPGA (Field Programmable Gate Array) y DSP (Digital Signal Processor); a la vez que se incluyen algunas configuraciones híbridas dónde se mezcla el software y el hardware con el fin de optimizar recursos de tiempo y dinero. Adicionalmente se muestran algunas aplicaciones comerciales que emplean técnicas de geolocalización basadas en información de ángulos de llegada, tiempos de llegada u otros parámetros que permiten realizar el proceso de triangulación o trilateración según sea el caso.Palabras clave: Radiogoniometría; radiolocalización; ángulo de llegada (AoA); diferencia de tiempos de llegada (TDoA); implementación, radio definido por software (SDR); arreglos de compuertas programables por campo (FPGA); procesador digital de señales (DSP). AbstractThis paper presents a survey and a comparison between different radio direction finding implementations, leading to identify the best option for implementation of this feature in spectrum management activities for developing countries. The implementations analyzed include classic techniques like Pseudo-Doppler and advanced high-resolution techniques like MUSIC. Different hardware alternatives to implement the algorithms are presented, including SDR (Software Defined Radio), FPGA (Field Programmable Gate Array) and DSP (Digital Signal Processing). Also some hybrid configurations are included, where software and hardware are Revista Ingeniería y Región. 2015;14(2): 23-33

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