短波天線 的英文怎麼說
中文拼音 [duǎnbōtiānxiàn]
短波天線
英文
short wave aerial-
Design of broadband shipboard whip - type antenna at high frequency band
艦用短波寬帶鞭狀天線研究Abstract ： to obtain the high frequency ( hf ) array signals, an applied circuit called hf array signals generator is designed using dsp and duc ( digital up converter ). the generator simulates the generation of output signals of 9 - element arrays with different array format, different direction of arrival ( doa ) and existing cochannel signals respectively
為了在實驗室中獲得短波天線陣列信號，應用dsp晶元和duc晶元（數字上變頻器）設計了一個實用電路短波陣列信號發生器，模擬實現了短波九元天線陣的多種陣型、不同來波方向及存在同頻多信號時的陣列輸出信號。Considering the one - sidedness and inaccuracy of knowledge discovery only from single - color database, an approach is proposed to discover knowledge from 1331 groups of mix - color database with partial least - square regression, based on measuring and learning 400 groups of single - color database. by this method, the mean error decreases when converting from rgb to cmyk, the precision of color matching is improved, and the automatic and general problem in color matching is further solved
本文基於統計學習理論構造了一種快速自適應隨機搜索演算法，證明了演算法的收斂性.給出了一種簡易實用的寬帶天線匹配設計新方法.應用該自適應演算法進行天線匹配設計，不僅演算法簡單，易於編程實現;而且能夠快速設計出具有較好性能的匹配網路，非常適用於各種短波、超短波天線的匹配設計問題The main research contents of the physical design include : presenting the domestic and international status of space weather and expanding on the need and the importance about the space weather forecast ; sorting the disastrous space weather and discussing their effects and adapted prediction methods ; analyzing the solar disturbing resources of space weather and the precursor or concomitant phenomena of solar eruption based on the newest observational results ; probing into the radiation principle of solar short - wave ray and presenting the computing methods about solar continuum and line spectrum radiation ; extrapolating physical methods of reconstructing the temperature and the emission measure of coronal plasma ; argumenting the effective observing spectrum for space weather empirical forecast and space weather numerical forecast
物理設計的主要研究內容包括：分析目前國內國際空間天氣預報的發展現狀及開展空間天氣預報的必要性和重要性；分類討論了災害性空間天氣的種類、影響及目前國際上的預報方法：分析了空間天氣太陽擾動源及擾動源爆發的先兆現象或者伴生現象；討論了太陽短波輻射線譜和連續譜輻射強度的計算方法：推導了利用望遠鏡多波段的觀測結果反演日冕等離子體溫度、發射量等參數的物理方法：論證了開展空間天氣經驗預報和發展數值預報有效的成像譜段。General specification for antenna multicouplers used in short wave receivers
短波接收天線共用器通用規范Design of a novel automatic antenna tuning coupler in hf communication
一種新的短波自適應天線調諧器的設計Detecting a magnetic field surrounding an earth - like exoplanet would prove a promising sign for finding extraterrestrial life
此外，使射電望遠鏡遠離地球上用於通信的短波長無線電波的喧擾，可以讓天體物理學家們以前所未有的細致度觀測早期宇宙。Moreover by pointing the telescope away from the din of shorter - wavelength radio waves that are used for communication on earth, astrophysicists would be able to see the early universe in unprecedented detail
此外，使射電望遠鏡遠離地球上用於通信的短波長無線電波的喧擾，可以讓天體物理學家們以前所未有的細致度觀測早期宇宙。In order to hold the performance of the antenna array of hf radar the length of antenna array is also very long
高頻超視距雷達工作在短波波段，為了保持一定的天線陣性能，天線陣尺寸通常也較大。The theory and the methods of study antenna were discussed in detail and combined with some conditions of the ma60 aircraft, illuminating the development plan of the shortwave antenna
詳細地討論了天線研究理論和方法，結合ma60飛機的實際情況，論證了短波電臺隱蔽式天線的研製方案。This paper researches the integrating application of adaptive antenna array technology, spread - spectrum communication technology and transform - domain filter technology in shortwave communication area, basing on the background of improving on the shortwave communication equipments being used in chinese army, and all the key techniques mentioned above are implemented in a single fpga chip
本文以改造我軍現役短波通信設備為背景，研究了自適應天線陣技術、擴頻通信技術、變換域濾波技術等多種現代數字信號處理技術在短波通信中的綜合應用，並以單片超大規模fpga晶元為硬體處理平臺，對系統中的關鍵技術進行了設計與實現。And then, the thesis import a thrice - polynomial technology to depict the yield curve of shanghai stork exchange market and gained the yield curve chart. under one factor model hypothesis, deduce the bond pricing formulae. based on 1945 data of buy - back rate in banking market, the thesis use ols and gmm estimation technologies to estimate the parameters of vasicek model, cir model, and ckls model, and verify which model can explain the china market ’ s short rate ’ s wave
然後，從實證的角度，用三次多項式來擬合上交所國債收益率曲線，並得出收益率曲線圖，在單因素模型推導了動態理論期限結構下的債券定價公式，並以1945個中國銀行間債券市場7天回購利率數據作為短期利率的代表，驗證vasicek模型、 cir模型與ckls模型是否適用中國短期利率的波動行為，估計出三個模型的參數。The main products are optical transmission equipment, pcm equipment, scada system. besides, the shortwave broadband antenna and power counters
恆光公司主要產品有光通信設備， pcm設備以及scada系統，此外恆光公司每年承擔短波寬帶天線和電源列頭櫃等軍品生產任務。Fm sw telescopic rod aerial
調頻短波拉桿天線This article introduced the kinds and performance parameters of shortwave aircraft antenna
本文介紹了機載短波天線類型及其性能參數。During the ceremony, mr. c y lam, director of the hong kong observatory, recalled that the gathering of meteorological observational data from the mainland relied upon the reception of short wave radio broadcast by mtc colleagues. the morse code broadcasts were skillfully decoded into textual messages, and which were kept in good conditions
天文臺臺長林超英于會上憶述：從前接收中國內地氣象觀測數據，是依靠氣象電信中心同事細心收聽短波無線電廣播，把資料從摩斯電碼morse code一一編譯成文字報文，並完好的保存下來。分享友人