Comparison between the Matrix Pencil Method and the Fourier Transform Technique for High-Resolution Spectral Estimation

1996 ◽  
Vol 6 (2) ◽  
pp. 108-125 ◽  
Author(s):  
José Enrique Fernández del Rı́o ◽  
Tapan K. Sarkar
Keyword(s):  
Fourier Transform ◽  
High Resolution ◽  
Spectral Estimation ◽  
Matrix Pencil ◽  
Matrix Pencil Method ◽  
The Matrix ◽  
The Fourier Transform

scholarly journals High Resolution Method using Patch Circular Array

2017 ◽  
Vol 7 (4) ◽  
pp. 2116 ◽  
Author(s):  
Mohammed Amine Ihedrane ◽  
Seddik Bri ◽  
El Fadl Adiba
Keyword(s):  
High Resolution ◽  
Central Element ◽  
Matrix Pencil ◽  
Direction Of Arrival ◽  
Music Algorithm ◽  
Resolution Method ◽  
Matrix Pencil Method ◽  
Comparison Results ◽  
The Matrix ◽  
High Resolution Method

Smart antennas have recently received increasing for improving the performance of wireless radio systems. In this research article, we have used a patch antenna using uniform circular arrays (UCA) with central element for direction of arrival (DOA). A central element was added to arrays in order to increase steering capability of the proposed array. This geometry is used to determine the elevation and azimuth based on two famous algorithms of high resolution method: Matrix Pencil method (MP) and MUltiple Signal Classification (MUSIC).The comparison results demonstrate clearly that the matrix pencil is more accurate and stable to estimation of direction of arrival compared to the MUSIC algorithm.

scholarly journals Locating Ships Using Time Reversal and Matrix Pencil Method by Their Underwater Acoustic Signals

Sensors ◽  
2021 ◽  
Vol 21 (15) ◽  
pp. 5065
Author(s):  
Daniel Chaparro-Arce ◽  
Sergio Gutierrez ◽  
Andres Gallego ◽  
Cesar Pedraza ◽  
Felix Vega ◽  
...  
Keyword(s):  
Time Reversal ◽  
Communication Channel ◽  
Matrix Pencil ◽  
Acoustic Signals ◽  
Underwater Acoustic ◽  
Low Bit Rate ◽  
Matrix Pencil Method ◽  
The Matrix ◽  
Resonance Expansion ◽  
Passive Sensors

This paper presents a technique, based on the matrix pencil method (MPM), for the compression of underwater acoustic signals produced by boat engines. The compressed signal, represented by its complex resonance expansion, is intended to be sent over a low-bit-rate wireless communication channel. We demonstrate that the method can provide data compression greater than 60%, ensuring a correlation greater than 93% between the reconstructed and the original signal, at a sampling frequency of 2.2 kHz. Once the signal was reconstituted, a localization process was carried out with the time reversal method (TR) using information from four different sensors in a simulation environment. This process sought to achieve the identification of the position of the ship using only passive sensors, considering two different sensor arrangements.

scholarly journals Controlled Release of Agrochemicals Intercalated into Montmorillonite Interlayer Space

2014 ◽  
Vol 2014 ◽  
pp. 1-9 ◽  
Author(s):  
Harrison Wanyika
Keyword(s):  
Fourier Transform ◽  
Controlled Release ◽  
Interlayer Space ◽  
Rotary Evaporation ◽  
Surface Areas ◽  
Space Reduction ◽  
Immersion Technique ◽  
The Matrix ◽  
The Fourier Transform ◽  
Mmt Clay

Periodic application of agrochemicals has led to high cost of production and serious environmental pollution. In this study, the ability of montmorillonite (MMT) clay to act as a controlled release carrier for model agrochemical molecules has been investigated. Urea was loaded into MMT by a simple immersion technique while loading of metalaxyl was achieved by a rotary evaporation method. The successful incorporation of the agrochemicals into the interlayer space of MMT was confirmed by several techniques, such as, significant expansion of the interlayer space, reduction of Barrett-Joyner-Halenda (BJH) pore volumes and Brunauer-Emmett-Teller (BET) surface areas, and appearance of urea and metalaxyl characteristic bands on the Fourier-transform infrared spectra of the urea loaded montmorillonite (UMMT) and metalaxyl loaded montmorillonite (RMMT) complexes. Controlled release of the trapped molecules from the matrix was done in water and in the soil. The results reveal slow and sustained release behaviour for UMMT for a period of 10 days in soil. For a period of 30 days, MMT delayed the release of metalaxyl in soil by more than 6 times. It is evident that MMT could be used to improve the efficiency of urea and metalaxyl delivery in the soil.

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