Development of 1000-mHz Distance Measuring Equipment

Dodington, Sven H.

doi:10.1109/taes.1980.308990

Cited by 3 publications

(1 citation statement)

References 2 publications

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“…TACAN은 군용 항법시설로 개발된 것이나, 오늘날 국제민간항공기구(ICAO)에서도 거리정보 부분을 DME 의 표준방식(DMET)으로서 정식으로 채택하고 있다 [5]. 설치 조건 동작원리가 VOR과 거의 같으므로 VOR局과 같은 장소에 설치되어, VOR/TACAN局(볼택局)으로서 운용되기도 한다.…”

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TACAN modulation generator for antenna purpose that precisely adjusts factor of modulation

Kim¹,

Son²,

Lim³

2017

Journal of Digital Convergence

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주제어 : 전술항행표지시설, 공중선, 방위정보, 변조신호, 변조도Abstract TACAN(TACtical Air Navigation) was created to support military aircraft's short range navigation (200~300 mile). TACAN must fulfill a condition of MIL-STD-291C, the U.S. Military Standards, which addresses the sum of 15Hz and 135Hz should be within 55%, following the factor of modulations for both to be 21±9% each. Within the existing TACAN antenna, modulation factor for 15Hz and 135Hz are created differently depending on its diameter, wavelength, angle of gradient, internal modulation method or using frequency code. It brings up a problem where applications needed to be stopped and repaired when modulating signal exceeds the standard of MIL-STD-291C since the existing TACAN antenna does not have coordination function. Hence, plan and produce a modulating signal generator using FPGA, and check the changes in the modulation factor for 15HZ and 135Hz, depending on the values that have been set in each criteria. Moreover, allow the modulating signal generator to be automatically adjusted based on the monitoring signal emitted by antenna, and place alarm sound just in case if it exceeds the standard.

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Section: 서론unclassified

TACAN modulation generator for antenna purpose that precisely adjusts factor of modulation

Kim¹,

Son²,

Lim³

2017

Journal of Digital Convergence

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Distance Measuring Equipment and its Evolving Role in Aviation

Kelly

Cusick

1986

Advances in Electronics and Electron Physics Volume 68

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Cosite Coexistence between Future L-DACS2 and Legacy DME Systems

Neji

Lacerda

Azoulay

et al. 2013

IEEE Trans. Aerosp. Electron. Syst.

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International audienceWe analyze the coexistence between the L-band Digital Aeronautical Communication System¿option 2 (L-DACS2), which is a preselected candidate to support future continental communications, and the distance measuring equipment (DME), which is an L-band radionavigation system in use for decades, now implemented in all aircrafts. We focus on the impact of L-DACS2 interference on the DME performance under the cosite scenario, where both equipment are located in the same aircraft. After a brief presentation of both systems, we study this critical scenario (from the system coexistence viewpoint), by proposing a new approach (different from classical frequency-domain analysis) that takes into account system dynamics and their technology characteristics. Based on various implementation methodologies, we show in the last part of the paper, the effect of some parameters on the coexistence between the on-board L-DACS2 transmitter and the on-board DME receiver

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Development of 1000-mHz Distance Measuring Equipment

Cited by 3 publications

References 2 publications

TACAN modulation generator for antenna purpose that precisely adjusts factor of modulation

TACAN modulation generator for antenna purpose that precisely adjusts factor of modulation

Distance Measuring Equipment and its Evolving Role in Aviation

Cosite Coexistence between Future L-DACS2 and Legacy DME Systems

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