Design of an adaptive CubeSat transmitter for achieving optimum Signal to Noise (SNR)

CubeSat technology has open opportunity to conduct a space related research at a relatively low cost. To maintain CubeSat mission at an affordable cost, CubeSat typically uses a simple communication system using UHF link with fixed transmit power and data rate. However, CubeSat in Low Earth Orbit (L...

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Main Authors:	Jaswar, Fitri Dewi, Ahmad, Yasser Asrul, Abdul Rahman, Tharek, Hindia, Mhd Noor
Format:	Conference or Workshop Item
Language:	English English
Published:	Aerospace Society Malaysia, Universiti Putra Malaysia 2017
Subjects:	TK5101 Telecommunication. Including telegraphy, radio, radar, television TK7800 Electronics. Computer engineering. Computer hardware. Photoelectronic devices TL787 Astronautics
Online Access:	http://irep.iium.edu.my/60206/ http://irep.iium.edu.my/60206/ http://irep.iium.edu.my/60206/ http://irep.iium.edu.my/60206/1/60206_Design%20of%20an%20adaptive%20CubeSat%20transmitter%20__complete.pdf http://irep.iium.edu.my/60206/7/60206-Design%20of%20an%20adaptive%20CubeSat%20transmitter%20for%20achieving%20optimum-SCOPUS.pdf

id	iium-60206
recordtype	eprints
spelling	iium-602062018-07-11T06:20:59Z http://irep.iium.edu.my/60206/ Design of an adaptive CubeSat transmitter for achieving optimum Signal to Noise (SNR) Jaswar, Fitri Dewi Ahmad, Yasser Asrul Abdul Rahman, Tharek Hindia, Mhd Noor TK5101 Telecommunication. Including telegraphy, radio, radar, television TK7800 Electronics. Computer engineering. Computer hardware. Photoelectronic devices TL787 Astronautics CubeSat technology has open opportunity to conduct a space related research at a relatively low cost. To maintain CubeSat mission at an affordable cost, CubeSat typically uses a simple communication system using UHF link with fixed transmit power and data rate. However, CubeSat in Low Earth Orbit (LEO) does not have a relative motion with the earth rotation, resulting in a variable of the propagation path of the transmission signal. A transmitter with the adaptive capability to select multiple sets of data rate and RF transmit power are proposed to the improve the link optimization problem due to the variability of the propagation path. This paper presents the adaptive UHF transmitter design as a solution to overcome the variable of the propagation path. The transmitter output power will be adjustable from 0.5W to 2W according to the mode of operations and satellite power limitations. The transmitter is designed to have four selectable modes of operation to achieve optimum SNR and efficient power consumption based on link budget analysis and CONOPS requirement. Three prototypes were developed and tested for space-environment conditions such as radiation, vibration, and thermal vacuum test. Further detail about radiation test conducted at the Malaysia Nuclear Agency Laboratory is explained in this paper with the successful result for estimated more than seven months in the orbit exposure. Based on author knowledge, this radiation test using gamma source with 1.5krad exposure was the first conducted for satellite programmed in Malaysia. Aerospace Society Malaysia, Universiti Putra Malaysia 2017-12 Conference or Workshop Item PeerReviewed application/pdf en http://irep.iium.edu.my/60206/1/60206_Design%20of%20an%20adaptive%20CubeSat%20transmitter%20__complete.pdf application/pdf en http://irep.iium.edu.my/60206/7/60206-Design%20of%20an%20adaptive%20CubeSat%20transmitter%20for%20achieving%20optimum-SCOPUS.pdf Jaswar, Fitri Dewi and Ahmad, Yasser Asrul and Abdul Rahman, Tharek and Hindia, Mhd Noor (2017) Design of an adaptive CubeSat transmitter for achieving optimum Signal to Noise (SNR). In: AEROS Conference 2017, 12 December 2017, Putrajaya, Malaysia. http://iopscience.iop.org/article/10.1088/1757-899X/270/1/012016/meta 10.1088/1757-899X/270/1/012016
repository_type	Digital Repository
institution_category	Local University
institution	International Islamic University Malaysia
building	IIUM Repository
collection	Online Access
language	English English
topic	TK5101 Telecommunication. Including telegraphy, radio, radar, television TK7800 Electronics. Computer engineering. Computer hardware. Photoelectronic devices TL787 Astronautics
spellingShingle	TK5101 Telecommunication. Including telegraphy, radio, radar, television TK7800 Electronics. Computer engineering. Computer hardware. Photoelectronic devices TL787 Astronautics Jaswar, Fitri Dewi Ahmad, Yasser Asrul Abdul Rahman, Tharek Hindia, Mhd Noor Design of an adaptive CubeSat transmitter for achieving optimum Signal to Noise (SNR)
description	CubeSat technology has open opportunity to conduct a space related research at a relatively low cost. To maintain CubeSat mission at an affordable cost, CubeSat typically uses a simple communication system using UHF link with fixed transmit power and data rate. However, CubeSat in Low Earth Orbit (LEO) does not have a relative motion with the earth rotation, resulting in a variable of the propagation path of the transmission signal. A transmitter with the adaptive capability to select multiple sets of data rate and RF transmit power are proposed to the improve the link optimization problem due to the variability of the propagation path. This paper presents the adaptive UHF transmitter design as a solution to overcome the variable of the propagation path. The transmitter output power will be adjustable from 0.5W to 2W according to the mode of operations and satellite power limitations. The transmitter is designed to have four selectable modes of operation to achieve optimum SNR and efficient power consumption based on link budget analysis and CONOPS requirement. Three prototypes were developed and tested for space-environment conditions such as radiation, vibration, and thermal vacuum test. Further detail about radiation test conducted at the Malaysia Nuclear Agency Laboratory is explained in this paper with the successful result for estimated more than seven months in the orbit exposure. Based on author knowledge, this radiation test using gamma source with 1.5krad exposure was the first conducted for satellite programmed in Malaysia.
format	Conference or Workshop Item
author	Jaswar, Fitri Dewi Ahmad, Yasser Asrul Abdul Rahman, Tharek Hindia, Mhd Noor
author_facet	Jaswar, Fitri Dewi Ahmad, Yasser Asrul Abdul Rahman, Tharek Hindia, Mhd Noor
author_sort	Jaswar, Fitri Dewi
title	Design of an adaptive CubeSat transmitter for achieving optimum Signal to Noise (SNR)
title_short	Design of an adaptive CubeSat transmitter for achieving optimum Signal to Noise (SNR)
title_full	Design of an adaptive CubeSat transmitter for achieving optimum Signal to Noise (SNR)
title_fullStr	Design of an adaptive CubeSat transmitter for achieving optimum Signal to Noise (SNR)
title_full_unstemmed	Design of an adaptive CubeSat transmitter for achieving optimum Signal to Noise (SNR)
title_sort	design of an adaptive cubesat transmitter for achieving optimum signal to noise (snr)
publisher	Aerospace Society Malaysia, Universiti Putra Malaysia
publishDate	2017
url	http://irep.iium.edu.my/60206/ http://irep.iium.edu.my/60206/ http://irep.iium.edu.my/60206/ http://irep.iium.edu.my/60206/1/60206_Design%20of%20an%20adaptive%20CubeSat%20transmitter%20__complete.pdf http://irep.iium.edu.my/60206/7/60206-Design%20of%20an%20adaptive%20CubeSat%20transmitter%20for%20achieving%20optimum-SCOPUS.pdf
first_indexed	2023-09-18T21:25:21Z
last_indexed	2023-09-18T21:25:21Z
_version_	1777412154228473856

Design of an adaptive CubeSat transmitter for achieving optimum Signal to Noise (SNR)

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