GLOSSARY ENTRY (DERIVED FROM QUESTION BELOW) | ||||||
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13:01 Feb 26, 2020 |
Russian to English translations [PRO] Science - Electronics / Elect Eng | |||||
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| Selected response from: Andrey Kozhushko Ukraine Local time: 16:20 | ||||
Grading comment
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Summary of answers provided | ||||
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3 +1 | resolution cell |
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3 | resolution space |
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3 | resolution volume |
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resolution space Explanation: https://www.jpl.nasa.gov/news/news.php?feature=755 we've shown existing high-resolution space-based radar systems can be used to effectively detect and assess marine pollution hazards https://www.nanalyze.com/2018/06/space-radar-satellites-trac... Umbra says its satellites will offer the highest resolution space radar on the market – “the world’s only radar imaging satellite capable of producing .25 meter (10-inch) resolution imagery and higher.” |
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resolution volume Explanation: radar resolution The minimum separation between two targets that permits them to be distinguished by a radar. The minimum separation in range along a given direction from the radar is one-half the transmitted pulse length. The minimum angular separation at a given range is approximately the 3-dB beamwidth of the radar. These minimum dimensions determine the radar resolution volume. Targets within the volume are not resolved and appear to be merged into a single target on a radar display. Radar resolution is usually of more concern for point targets than for weather echoes, because the latter are beam-filling targets that are considerably larger than the resolution volume. http://glossary.ametsoc.org/wiki/Radar_resolution Ref. also to: https://www.google.ru/search?newwindow=1&source=hp&ei=MWJWXs... |
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resolution cell Explanation: Сравните текст в источниках: 1. Выделим в зоне обзора четыре соседних элементарных объема 1, 2, 3, 4, в каждом из которых находится одна точечная цель. Элементы 1 и 2 имеют одинаковые угловые координаты, но отличаются по дальности на величину ΔД, элементы 1, 3 отличаются только по азимуту на Δβ и 1,4 - только по углу места на Δε, причем все цели наблюдаются раздельно. Будем сокращать каждую из величин ΔД, Δβ, Δε до тех пор, пока раздельное наблюдение целей станет невозможным. Тогда объем 1 и будет разрешаемым объемом (элементом разрешения), его элементами ΔДмин, Δβмин, Δεмин оценивается разрешающая способность станции по дальности, азимуту и по углу места. 2. radar resolution cell: The volume of space that is occupied by a radar pulse and that is determined by the pulse duration and the horizontal and vertical beamwidths of the transmitting radar. Reference: http://zrv.ivo.unn.ru/pages/vtp/5/5-3-radiolokatsionnyj-obzo... https://www.its.bldrdoc.gov/fs-1037/dir-029/_4335.htm |
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