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Ditemukan 2 dokumen yang sesuai dengan query
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"Measurement mostly required a precision, accuracy and sensitivity. Measurement by using the analog altimeter often shows that the obstained data are inaccurate, because lot of error factors influencing the measurement. To reduce the error factors, the altimeter is made digitally. Digital altimeter based on microcontroller AT89S53 is a measuring device that is designed to maesure relative or absolute altitude. This measuring instrument can be realized by using the atmospheric pressure sensor type MPX4100, voltage divider circuit, ADC 16 bits type AD7715 with serial control , microcontroller AT89S53 and LCD. The place for retrieving altitude data are selected randomly. From the result of testing and analyzing, this device produced the altitude measurement with average level of measurement error kurang lebih 0,367% average value level of measurement accuracy is equal to 99,6 % and the average of deviation kurang lebih 1,4 m at interval 100 m - 1180 m.
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Artikel Jurnal  Universitas Indonesia Library
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"This book gathers a selection of peer-reviewed papers presented at the Tiangong-2 Data Utilization Conference, which was held in Beijing, China, in December 2018. As the first space laboratory in China, Tiangong-2 carries 3 new types of remote sensing payloads - the Wide-band Imaging Spectrometer (WIS), Three-dimensional Imaging Microwave Altimeter (TIMA), and Multi-band Ultraviolet Edge Imaging Spectrometer (MUEIS) - for observing the Earth. The spectrum of the WIS covers 18 bands, from visible to thermal infrared, with a swath of 300km. The TIMA is the first-ever system to use interferometric imaging radar altimeter (InIRA) technology to measure sea surface height and land topography at near-nadir angles with a wide swath. In turn, the MUEIS is the worlds first large-field atmospheric detector capable of quasi-synchronously detecting the characteristics of ultraviolet limb radiation in the middle atmosphere.
The Earth observation data obtained by Tiangong-2 has attracted many research groups and been applied in such diverse areas as land resources, water resources, climate change, environmental monitoring, agriculture, forestry, ecology, oceanography, meteorology and so on. The main subjects considered in this proceedings volume include: payload design, data processing, data service and application. It also provides a comprehensive introduction to the research results gleaned by engineers, researchers and scientists throughout the lifecycle of the Tiangong-2 Earth observation data, which will improve the payload development and enhance remote sensing data applications."
Singapore: Springer Nature, 2019
e20509922
eBooks  Universitas Indonesia Library