The Radio Frequency Source Position Finder Based on The Triangle-Centroid-Algorithm

Kristiyana, Samuel; Susanto, Adhi; Sunarno, Sunarno; Hidayat, Risanuri

doi:10.22146/ijitee.25140

Cited by 5 publications

(1 citation statement)

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“…Roanoke Doppler antenna is designed with a switching system and signal reception amplifier by a half-wavelength antenna square-4 arrangement that can determine the direction of the RF signal coming. Adaptive systems can help recipient systems lock direction information based on the greatest signal intensity [14][15]. M. C. E. Stieber outlines how the direction finder technology was exploited in the design of a device; capable of locating the where about of a UHF transmitter.…”

Section: Introductionmentioning

confidence: 99%

Radio Transmission Detection Using Doppler in UHF Frequency Band

Sudibya¹,

Dermawan²,

Purnomo³

et al. 2022

Jurnal Teknik Elektro AVITEC

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The direction finder of a radio transmitter is a device that functions to find and determine the direction of a radio transmitter that works in the Ultra High Frequency (UHF) band. UHF frequency used is in the range of 420 - 440 MHz. The concept of Doppler radio is used as a method to determine the direction a radio transmitter is located. Radio Doppler use four receiving antennas which are installed at a certain distance so that it can produce a difference in frequency (Doppler) on each radio antenna because of the difference in the angle of the detected signal. The direction of the incoming signal will be displayed on a set of 16 LEDs and each LED will represent the direction of the incoming angle of 22.5 degrees. The detected frequencies are 422,580 MHz and 429,980 MHz originating from the UHF transmitter with 100mW of power and amplified with a radio frequency amplifier of 3 Watts power. The results show that the frequency of 429,980 MHz was detected with a maximum detectable distance of 1500 meters. The frequency of 422,580 can be detected with a maximum distance of 800 meters. This radio direction finder is can be used to find radio signal in UHF band frequency 420-440 MHz. The direction of the radio transmitter location is simply show in group of led’s as a direction detector.

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Section: Introductionmentioning

confidence: 99%