نتایج جستجو برای: beacon signal

تعداد نتایج: 421240  

This paper presents the design and simulation of a typical Ka band satellite beacon receiver for propagation experimentation. Using satellite beacon signal as a reference signal in satellite wave propagation study, is one of the most important methods. Satellite beacons are frequently available for pointing large antennas, but such signals can be used for measuring the effect of natural phenome...

Journal: :journal of advances in computer engineering and technology 2015
reza bahri hossein yarmohammadi mohammad reza keshavarzi gholamreza moradi

this paper presents the design and simulation of a typical ka band satellite beacon receiver for propagation experimentation. using satellite beacon signal as a reference signal in satellite wave propagation study, is one of the most important methods. satellite beacons are frequently available for pointing large antennas, but such signals can be used for measuring the effect of natural phenome...

H. Yarmohammadi L. Mohammadi R. Bahri S.H. Maddah Hosseini

In this paper satellite wave propagation at Ku and Ka band is considered. The design and simulation of a typical satellite beacon receiver at Ka band is designed and simulated for the future works. Also rain attenuation prediction at Ku band using satellite signal beacon measurement and simulations for Iran Telecommunication Research Center (ITRC) are presented. The measurement setup consists o...

Journal: :amirkabir international journal of electrical & electronics engineering 2013
r. bahri s.h. maddah hosseini l. mohammadi h. yarmohammadi

in this paper satellite wave propagation at ku and ka band is considered. the design and simulation of a typical satellite beacon receiver at ka band is designed and simulated for the future works. also rain attenuation prediction at ku band using satellite signal beacon measurement and simulations for iran telecommunication research center (itrc) are presented. the measurement setup consists o...

2015
Jonghwan Lee Sung Ung Moon Yong Seung Lee Bahy A. Ali Abdulaziz A. Al-Khedhairy Daoud Ali Javed Ahmed Abdullah M. Al Salem Soonhag Kim

Fluorescence monitoring of endogenous microRNA (miRNA or miR) activity related to neuronal development using nano-sized materials provides crucial information on miRNA expression patterns in a noninvasive manner. In this study, we report a new method to monitor intracellular miRNA124a using quantum dot-based molecular beacon (R9-QD-miR124a beacon). The R9-QD-miR124a beacon was constructed using...

Journal: :CoRR 2015
S. N. Bharadwaj S. N. Jagadeesha S. Ravindra

We consider the problem of localizing a target taking the help of a set of anchor beacon nodes. A small number of beacon nodes are deployed at known locations in the area. The target can detect a beacon provided it happens to lie within the beacon’s transmission range. Thus, the target obtains a measurement vector containing the readings of the beacons: ‘1’ corresponding to a beacon if it is ab...

Journal: :JCP 2011
Quan Liu Ping Ren Zude Zhou

Three-dimensional accurate positioning algorithm, using RSSI-based (Received Signal Strength Indication) positioning method, which constructs an attenuation model of wireless signal between beacon node and unknown node in three-dimensional space, and compensates for the loss of wireless signal on the basis of their material, thickness and other factors when there are obstacles or walls being in...

2011
José Manuel Villadangos Jesús Ureña Juan Jesús García Manuel Mazo Álvaro Hernández Ana Jiménez F. Daniel Ruiz Carlos De Marziani

In this article, a time-of-flight detection technique in the frequency domain is described for an ultrasonic local positioning system (LPS) based on encoded beacons. Beacon transmissions have been synchronized and become simultaneous by means of the DS-CDMA (direct-sequence code Division multiple access) technique. Every beacon has been associated to a 255-bit Kasami code. The detection of sign...

2012
T. S. Seay A. H. Huntoon T. S. SEAY A. H. HUN TOON

A functional description of a communications satellite beacon receiver is presented. The system, designed primarily for LES-5/6, is capable of reliable unattended operation, and provides a frequency and time reference for fixed and highly mobile satellite communications terminals. Theoretical and experimental data are given, with particular emphasis on automatic acquisition and tracking of the ...

Journal: :The Journal of Advanced Navigation Technology 2015

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