Techavijit, Pirada

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Techavijit, Pirada
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Email
pirada.te@kmitl.ac.th

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    Item type:Publication,
    CubeSat image transmission in JPEG compression: An experiment on high altitude platform
    (2016-03-23)
    Techavijit, Pirada
    ;
    Chivapreecha, Sorawat
    ;
    Sukchalerm, Polkit
    ;
    Plodpai, Aniwat
    CubeSat is a type of picosatellite which is developed with the purposes of promoting and development the skills necessary for the design, manufacturing, and testing of small satellites in the future. This paper presents our work on CubeSat design and development which focuses on JPEG compression and transmission to ground station. And this paper also uses the high altitude balloon to verify CubeSat functions as it is low cost experiments but can provide conditions similar to spacelike: pressure, temperature, air density as well as distance for communication. This paper will discuss the testing result of CubeSat on high altitude balloon to examine functions, verify link budget and signal strength in stratosphere at maximum altitude of 24 kilometers.
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    Item type:Publication,
    Potential of Photovoltaic on Small Stratospheric Satellite in Real-World Experiment
    (2023-01-01)
    Techavijit, Pirada
    ;
    Wongphuangfuthaworn, Natthapong
    ;
    Sukchalerm, Polkit
    ;
    Plodpai, Aniwat
    This paper investigates the potential of monocrystalline photovoltaic (PV) panels to generate power when installed on stratospheric satellites through near-space flight experiments conducted at altitudes of 0-23 kilometers above sea level. It also compares the results with a mathematical model developed by ASHRAE in previous research, which reveals the differences caused by various factors such as atmospheric attenuation and high-level clouds. The main objective of this study is to identify the optimal altitude for deploying stratospheric satellites with appropriately sized PV panels that can generate sufficient power to meet the communication system's requirements for long-term operation.
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    Item type:Publication,
    Internet network in space for small satellites: Concept and experiments
    (2018-01-01)
    Techavijit, Pirada
    ;
    Sukchalerm, Polkit
    ;
    Wongphuangfuthaworn, Natthapong
    ;
    Plodpai, Aniwat
    ;
    Manuthasna, Shariff
    Currently, no wireless network service is being offered in space. This fact has caused satellite developers to establish their own wireless network with a low coverage area that does not function very well. These problems can be resolved by setting up an effective wireless network that can be offered as a service to satellites in orbit. This study is focused on designing a high-quality wireless-in-space network to connect satellites in orbit to the Internet. Such a network would enable satellites to be controlled through the Internet from the Earth without having their own ground stations. In this paper, various aspects of the design of a network setup standard are discussed. These aspects include appropriate wireless communication and the construction of a model satellite that can be connected to the network from space. The work also included testing the design by setting up the Internet network for use above Thailand's territory and launching the original model satellite for the demonstration of the principle. The sensor data was then transmitted in real time to audiences from all over the country and used to design an Internet network in space with global coverage, which is a target for further development.