ARTÍCULO
TITULO

Compensation for Group Velocity of Polychromatic Wave Measurement in Dispersive Medium

Seung Jin Chang and Seung-Il Moon    

Resumen

The estimation of instantaneous frequency (IF) method is introduced to compensate for the group velocity of electromagnetic wave in dispersive medium. The location of the reflected signal can be obtained by using the time-frequency cross correlation (TFCC), following which it is used to extract the transmitted signal from the total signal acquired. The signal propagated in the dispersive medium is attenuated and distorted by the attenuation characteristics, which depend on the frequency of the medium. By using the IF curve calculated for the transmitted signal, the changed center frequency and time terms can be obtained. The obtained terms are used to compensate for the group velocity error induced by signal distortion and attenuation. Through experiments and simulation, the accuracy of the proposed method is 2% higher than that of the conventional method when the signal propagates over a long distance.

 Artículos similares

       
 
Annamalai Balamurugan, Thangavel Swaminathan Sivakumaran     Pág. 45 - 59
In this paper, a hybrid system is performed with fault detection and diagnosis on multi-phase induction motor (IM). The proposed method is hybrid of integrated Harris Hawk optimization (IHHO) and gradient boosting decision trees (GBDT) thus called the GB... ver más

 
Ant. Ardath Kristi, Bambang Susanto, Agus Risdiyanto, Agus Junaedi, Anwar Muqorobin, Noviadi Arief Rachman, Harjono Priyo Santosa     Pág. 75 - 91
Harmonic content is an important parameter in relation to the power generated by inverter. In power conversion technology of inverter, sinusoidal pulse width modulation (SPWM) is the most popular used by many researchers. The advantages of SPWM inverter ... ver más

 
Dimas Okky Anggriawan, Audya Elisa Rheinanda, Muhammad Khanif Khafidli, Eka Prasetyono, Novie Ayub Windarko     Pág. 239 - 251
Series Arc Fault is one of the disturbances of arcing jump is caused by gas ionization between two ends of damaged conductors or broken wire forming a gap in the insulator. Series arc fault is the primary driver of electrical fire. However, lack of knowl... ver más

 
Hala A. Naman,Naseer Ali Hussien,Mohand Lokman Al-dabag,Haider Th.Salim Alrikabi     Pág. pp. 172 - 183
One of the unexpected intelligence tactics known in World War II was to conceal the data in images that were reduced to the size of a point that was used in every text and transported in front of the enemy's eyes. In the new age, and after the expansion ... ver más

 
Oleksandr Yudin,Ruslana Ziubina,Serhii Buchyk,Olena Matviichuk-Yudina,Olha Suprun,Viktoriia Ivannikova     Pág. 56 - 64
Methods for verifying and identifying the operator by the features of the formation of biometric features of a speech signal in control systems of unmanned aerial systems are proposed.A method has been developed for the effective width of the spectrum of... ver más