Browse Items (27 total)
- Collection: Vol. 20, No. 6 2022
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TELKOMNIKA Telecommunication, Computing, Electronics and Control
Weather observation and forecasting using radiosonde
Weather balloons are high-altitude meteorological balloons particularly used for carrying scientific payloads into the upper atmosphere. These data are obtained by using an instrument called as radiosonde which is attached to the helium filled…
TELKOMNIKA Telecommunication, Computing, Electronics and Control
Compressive sensing-based channel estimation for high mobile systems with delay Doppler effects
In this paper, channel overhead is reduced by exploiting channel sparsity for multiple input multiple output-orthogonal frequency division multiplexing (MIMO-OFDM) system. Where, compressive sensing (CS) based dictionary design algorithms has been…
TELKOMNIKA Telecommunication, Computing, Electronics and Control
A comparative study of mango fruit pest and disease recognition
Mango is a popular fruit for local consumption and export commodity.
Currently, Indonesian mango export at 37.8 M accounted for 0.115% of
world consumption. Pest and disease are the common enemies of mango that degrade the quality of mango yield.…
Currently, Indonesian mango export at 37.8 M accounted for 0.115% of
world consumption. Pest and disease are the common enemies of mango that degrade the quality of mango yield.…
TELKOMNIKA Telecommunication, Computing, Electronics and Control
Various control methods of permanent magnet synchronous motor drives in electric vehicle: a technical review
Day by day use of internal combustion engines (ICE) compared to electric vehicles (EV) is deteriorating because mainly of pollution and their less fuel availability. In the present scenario, an electric vehicle plays a major role in place of an ICE…
TELKOMNIKA Telecommunication, Computing, Electronics and Control
Parallel field programmable gate array implementation of the sum of absolute differences algorithm used in the stereoscopic
system
Stereo vision is a popular method for an artificial vision-based environment perception system used in various applications such as intelligent transportation. With two cameras, the disparity map is calculated to find the distance and depth of…
TELKOMNIKA Telecommunication, Computing, Electronics and Control
A coverless image steganography based on robust image wavelet hashing
Since the concept of coverless information hiding was proposed, it has been greatly developed due to its effectiveness of resisting the steganographic tools. In this paper, a new coverless steganography is presented to hide the secret data in a more…
TELKOMNIKA Telecommunication, Computing, Electronics and Control
Development and design of wearable textile antenna on various fabric substrate for unlicensed ultra-wideband applications
In the area of wearable technology an enhancement of basic microstrip
antenna is evolution of wearable textile antenna. A major requirement for wearable textile antenna is its flexible designed materials which incoprates of fabric in the structure.…
antenna is evolution of wearable textile antenna. A major requirement for wearable textile antenna is its flexible designed materials which incoprates of fabric in the structure.…
TELKOMNIKA Telecommunication, Computing, Electronics and Control
Superior hue output as well as lumen for WLEDs with dual-sheet distant layouts of phosphor
Remote phosphor constructions usually have color quality drawbacks but are more luminous in terms of lumen, surpassing conformal phosphor or in-cup layouts of phosphor. From this disadvantage, there is a great number of studies carried out to boost…
TELKOMNIKA Telecommunication, Computing, Electronics and Control
Surface coated red phosphors with silica nanoparticles and silica nanocomposites: performance modifications
Surface coverings using nanomaterials of silica nanoparticles and poly
(methyl methacrylate) – abbreviated “PMMA-silica nanomaterials” – are
introduced to the Y2O2S:Eu3+ phosphor through four distinct approaches. The objective is to enhance…
(methyl methacrylate) – abbreviated “PMMA-silica nanomaterials” – are
introduced to the Y2O2S:Eu3+ phosphor through four distinct approaches. The objective is to enhance…
TELKOMNIKA Telecommunication, Computing, Electronics and Control
Application of dual-layer phosphor geometries for enhancing the optical properties of white-light LEDs
This article compares the lumen output of two packages of two-remote
phosphor (RP). The first package is flat dual-remote phosphor (FDRPS).
The second package is concave dual-remote phosphor (CDRP). The dispersion qualities of the…
phosphor (RP). The first package is flat dual-remote phosphor (FDRPS).
The second package is concave dual-remote phosphor (CDRP). The dispersion qualities of the…