Chodkaveekityada, Peeramed
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Preferred name
Chodkaveekityada, Peeramed
Alternative Name
Chodkaveekityada, P.
Main Affiliation
Email
peeramed.ch@kmitl.ac.th
7 results
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Item type:Publication, Time correlation used to improve time diversity gain of rainfall prediction(2018-01-01); Fukuchi, HajimeCorrelation of the rainfall rate with time depends on geography, environment, and the type of rainfall. In this letter, we consider the use of such a correlation to improve the time diversity gain of a system that predicts rainfall over Japan. From a rain may with 4 years of data, we selected 43 locations throughout mainland Japan, and from these data, we derived the cumulative time percentage, the diversity gain from a time diversity method using 10 to 120 min delays, and the correlation from a time series of rainfall. This information is used to improve the prediction of rainfall. Root-mean-square errors show an improvement in the diversity gain. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Direction dependence factor in site diversity design for Kanto area, Japan(2017-01-01); Fukuchi, H.Site diversity method has been used to mitigate the effect of rain attenuation since the beginning of satellite communication era. A distance in site diversity method is designed as short as possible to avoid the effect of rain attenuation at the same time. To achieve more accuracy and reliability in the site diversity design, we propose the spatial correlation factor evaluated from rain gauge network in Kanto area, Japan. The spatial correlation results show that the direction dependent factor should be taken into account in the site diversity gain formula. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Estimation of Cloud Attenuation over Bangkok, Thailand Based on an ITU-R Model(2019-10-01) - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Design and development of a high-and-low-altitude air observation system for rainmaking process in Thailand(2019-06-01); Thailand has been known as a top agricultural exporter in the world. But in every year, we miss a lot of opportunities to export some agricultural products due to drought condition. In the years 2017 and 2018, the areas in risk of a drought crisis were 47 areas throughout the whole country amounting to around 1.5 million acres. There was not enough water to grow plants in these areas. As a matter of fact, Thailand is located near the equator which has more cumulative rainfall volume than any other areas in the world. Still, drought crisis happens every year. One of the reasons behind this may be lack of valid predictive information. Weather information is very important for an agricultural country. Thailand has not invested sufficiently in building an effective weather sensor network. A compromise has been made by employing high technology to produce rain in specific areas instead to alleviate drought crisis. This work was a design and development of a high-and-low-altitude air observation system suitable for rainmaking process in Thailand that aimed to reduce the import of advanced and expensive technology. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Design and Development of Effective Radiosonde for Rainmaking Process in Thailand(2018-07-02); Weather information is very useful to many activities in every country such as aeronautical, meteorological and rainmaking. Thailand is located near the equator that makes the weather in this region vary a lot and more severe than in another areas. Thailand also exports a lot of agricultural products to serve people globally. Oftentimes, rain does not fall on an intended area like an area round a dam, hence there is not enough water to provide to farmers. This work is a part of a goal to design and develop a weather observation system suitable for rainmaking in Thailand. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Comparison of spatial correlation between Japan and Thailand(2017-12-19)Site diversity is the one technique that has been used to reduce the rain attenuation effect for long time ago. Since the past, we just located the site diversity far away from the main site and thought that can be completely reduced the rainfall effect, but it does not. To improve this idea, in this paper, we propose another factor as call spatial correlation in order to design the location of site diversity more accuracy. We evaluate the spatial correlation for Japan and Thailand to confirm that the spatial correlation is totally different in each area and we should include this factor into the site diversity gain formula. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Cansat design and their applications(2018-01-01)