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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Chirp transmitter ： ウィキペディア英語版 Chirp transmitter A chirp transmitter is a shortwave radio transmitter that sweeps the HF radio spectrum on a regular schedule. If one is monitoring a specific frequency, then a ''chirp'' is heard (in CW or SSB mode) when the signal passes through. These transmitters are mainly used for over-the-horizon radar systems 〔Radar Handbook (M. Skolnik) http://www.helitavia.com/skolnik/Skolnik_chapter_24.pdf 〕 and for probing ionospheric properties.〔Peter Martinez, G3PLX: Chirps and HF Propagation http://jcoppens.com/radio/prop/g3plx/index.en.php〕 An analysis of current transmitters has been done using SDR technology.〔Pieter-Tjerk de Boer, PA3FWM: Chirp Signals analyzed using SDR http://websdr.ewi.utwente.nl:8901/chirps/〕 For better identification of chirp transmitters the following notation is used: :, where the repetition rate is the time between two sweeps in seconds and the chirp offset is the time of the first sweep from 0 MHz after a full hour in seconds. If the initial frequency is greater than 0 MHz, the offset time can be linearly extrapolated to 0 MHz.〔 == List of chirp transmitters == * Duga-3 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Chirp transmitter」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.