Penerima Sinyal Emergency Locator Transmitter dengan Metode Direct Receiver pada Frekuensi 121,5 MHz

Rustamaji Rustamaji, Kania Sawitri, Arief Shubhan Hakim

Abstract


To find out the location of an aircraft accident from an ELT signal beam of 121.5 MHz, search and rescue (SAR) officers or civil aviation authorities need an ELT signal receiver device that works at the same frequency, which is 121.5 MHz. The purpose of this research is to produce an ELT signal receiver with direct receiver method at a frequency of 121.5 MHz which is simpler, requires fewer RF devices, and is according to specifications for civil aviation. In this research, the design and realization of ELT signal receivers are carried out using the direct receiver method, including: a BPF and a RF amplifier as a direct receiver circuit, an AM demodulator, and an audio amplifier. Based on the results of measurements and tests that have been done, the direct receiver circuit can receive an ELT signal at a frequency of 121.5 MHz in the range of 121.330 to 121.617 MHz with -40.35 dB sensitivity, the AM demodulator can demodulate the audio signal at a frequency of 346.6 Hz, and the audio signal at a frequency of 337.6 Hz as a pointer to an ELT signal can be heard through the loudspeaker. The results of this study are ELT signal receivers with direct receiver method at a frequency of 121.5 MHz which are according to specifications for civil aviation.

Keywords


ELT signal; 121.5 MHz frequency; direct receiver; audio signal; ELT signal receiver

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References


R. J. Wallace and T. P. Hubbard, “Effect of 406 MHz ELTs and COSPAS SARSAT Cessation of 121.5 MHz ELT Monitoring on Search and Rescue Duration for General Aviation Aircraft Accidents in the Contiguous United States,” International Journal of Aviation, Aeronautics, and Aerospace, vol. 1, no. 2, pp. 1-16, 2014.

Rustamaji, K. Sawitri, and R. H. Sitepu, “Pembangkit Sinyal ELT pada Frekuensi 121,5 MHz,” Jurnal Teknik Elektro, vol. 11, no. 1, pp. 9-15, 2019. https://doi.org/10.15294/jte.v11i1.19201.

Transport Canada Aeronautical Information Manual (TC AIM): SAR - Search and rescue (SAR), Transport Canada, October 10, 2019.

T. Sherman, J. Tellez, T. Cady, J. Herrera, H. Haideri, J. Lopez, M. Caudle, S. Bhandari, and D. Tang, “Cooperative search and rescue using autonomous unmanned aerial vehicles,” in 2018 AIAA Information Systems-AIAA Infotech@ Aerospace, 2018, p. 1490. Published Online: 7 Jan 2018. https://doi.org/10.2514/6.2018-1490.

M. Raut, and C. Kendurkar, “Enhancements and alternatives proposed for emergency homing devices,” International Journal of Scientific and Research Publications, vol. 9, Issue 8, pp. 92-96, 2019. https://doi.org/10.29322/IJSRP.9.08.2019.p9216.

V. K. Shah, H. J. Patel, and U. N. Jani, “Economical automatic deployable emergency locator transmitter system,” in 2017 International conference of Electronics, Communication and Aerospace Technology (ICECA), 2017, vol. 1, pp. 267-270. Date Added to IEEE Xplore: Dec. 18, 2017.

L. Peters, and C. Bil, “Designing an automatic beacon ejection system for aircraft,” in 16th AIAA Aviation Technology, Integration, and Operations Conference, 2016, p. 3918. Published Online: 10 Jun 2016. https://doi.org/10.2514/6.2016-3918.

A. Q. Nguyen, A. Amrhar, A. A. Kisomi, X. Fang, and R. Jr. Landry, “In-flight performance analysis of direct RF sampling architecture applied to VHF band avionics,” in 2018 IEEE Aerospace Conference, 2018, pp. 1-20. Date Added to IEEE Xplore: Jun. 28, 2018.

M. Rice, G. Lechner, J. Zhang, and J. Zhang, “Results from australian trials of UHF distress beacons over MEO satellites,” in 33rd AIAA International Communications Satellite Systems Conference and Exhibition, 2015, p. 4350. Published Online: 3 Sep 2015. https://doi.org/10.2514/6.2015-4350.

D. Delcuvellerie, “Tracking of aircraft in distress using the cospas-sarsat system,” in 2018 SpaceOps Conference, 2018, p. 2343. Published Online: 25 May 2018. https://doi.org/10.2514/6.2018-2343.

B. A. Kalaria, C. G. Nayak, and N. K. Shrivastava, “Designing a web based module for SAR to ensure data security using JAVA,” International Journal of Computer Science and Mobile Computing, vol. 3, no. 4, pp. 297-306, 2014.

B. A. Srihen, J. P. Yonnet, and M. Benslama, ‘‘Design and realization an ELT beacon and decoders of frames 406 MHz,’’ in International Conference (IEEE) on Engineering & MIS (ICEMIS), 2017, pp. 1-6. https://doi.org/10.1109/ICEMIS.2017.8272967.

B. A. Srihen, J. P. Yonnet, and M. Benslama, “Closed Approach of a Decoder Mobile for the 406 MHz Distress Beacon,” Advances in Science, Technology and Engineering Systems Journal, vol. 3, no. 6, pp. 243-246, 2018.

J. M. M. Heredia, Z. Garcia, and J. L. M. Jimenez, “Development of an emergency radio beacon for small unmanned aerial vehicles,” IEEE Access, vol. 6, pp. 21570-21581, 2018.

A. Najmurrokhman, Kusnandar, U. Komarudin, A. Daelami, A. G. Suryanto, and A. Munir, “Development of GPS transceiver for quadcopter-based emergency locator beacon,” in 2019 IEEE 5th International Conference on Wireless and Telematics (ICWT), 2019, pp. 1-4. Date Added to IEEE Xplore: Feb. 3, 2020.

Y. Chervoniak, R. Sinitsyn, F. Yanovsky, V. Makarenko, V. Tokarev, and O. Zaporozhets, “Algorithm of passive acoustic locator data processing for flying vehicle detection and tracking.” in 2017 IEEE Microwaves, Radar and Remote Sensing Symposium (MRRS), 2017, pp. 43-48. Date Added to IEEE Xplore: Oct. 19, 2017.

L. Arena, and D. Orlando, “Passive location developments in Elettronica SpA: System applications,” in 2014 Tyrrhenian International Workshop on Digital Communications-Enhanced Surveillance of Aircraft and Vehicles (TIWDC/ESAV), 2014, pp. 130-134. Date Added to IEEE Xplore: Nov. 6, 2014.

Y. Zhang, B. P. Wang, Y. Fang, and Z. X. Song, “SAR observation error estimation based on maximum relative projection matching.” Hindawi International Journal of Antennas and Propagation, vol. 2020, 2020. https://doi.org/10.1155/2020/3517834.

K. Sawitri, Rustamaji, and A. Adhari, “Osilator 121,5 MHz pada ELT Menggunakan VCO MC1648,” Transmisi, vol. 22, no. 1, pp. 30-37, 2020. https://doi.org/10.14710/transmisi.22.1.30-37.

Rustamaji, K. Sawitri, and G. Fuady, “Radio Direction Finder pada HF Band sebagai Elemen dari Passive Radar,” Elkha, vol. 11, no. 2, pp. 107-114, 2019. https://doi.org/10.26418/elkha.v11i2.34733.

Rustamaji, Elektronika Komunikasi, Bandung: Penerbit Itenas, 2017.

R. F. Coughlin, F. F. Driscoll, Operational Amplifiers and Linear Integrated Circuits, London: Prentice-Hall International, 2000.




DOI: https://doi.org/10.15294/jte.v12i1.24208

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