氣象信號 的英文怎麼說
中文拼音 [qìxiàngxìnháo]
氣象信號
英文
meteorologic signal-
At the same time, combining the electrostatic measurement principle and the actual working conditions of pneumatic pipelines, the author puts forward the design principle in theory and finishes the devising, executing, debugging, experimenting and analyzing the experiment phenomena and results, testing the feasibility of the electrostatic sensor to be used in the measurement on the mass flow rate of the coal paniculate. furthermore, with the debugging and experimenting of the system, the author improves the electrostatic sensor and its signal collecting system gradually according to the problems, and makes the performance of the system to be enhanced remarkably
同時，作者結合靜電測量原理以及氣力輸送管道的實際工況，從理論上提出了靜電傳感器的設計依據，完成了靜電傳感器及其信號採集系統的設計、製作、安裝、調試和實驗，分析了實驗現象和結果，驗證了靜電傳感器用於煤粉質量流量測量的可行性，並且通過系統調試和實驗，針對發現的問題對靜電傳感器及其信號採集系統不斷地進行了改進，使其性能有了顯著地提高。In order to examine the south motorcycle engine preignition phenomenon, using the rich burning information of the massive ions which are produced when the air cylinder is burnt, through analyzing the wave form difference between lighting a fire normally and firing early, it can be determined whether preignition occurs or not
為了檢測南方摩托車發動機早燃現象，利用其氣缸內燃燒時產生大量的離子電流信號所包含的豐富燃燒信息，對其火花塞正常點火和熾熱點火離子電流顯示的波形進行研究分析，從而確定是否發生早燃。Aeronautical meteorological station and signal station at cheung chau
長洲航空氣象站和信號站歷史History of the aeronautical meteorological station and signal station at cheung chau
長洲航空氣象站和信號站歷史The wavelet multi - analysis is adopted to further understand the microstructure of solids holdup fluctuation, the vivid fingermark images show that it is a fractal and dissipative structure. the low and frequency signals reflect the dilute phase fluctuation behavior and dense phase ( cluster ) fluctuation behavior, respectively. to deep understand the multi - scales characteristic of gas - solids circulating fluidization, the wp decompose methods for obtaining the eigenvalue of gas - solid fluidized bed has been developed. the results show that eigenvalues of different scales are effective for identification of non - uniform and dynamic structure of gas - solid fluidized bed
小波多分辨分析法得到指紋圖形象地揭示了顆粒濃度脈動的自相似、分叉等具有混沌特徵的微觀結構；小波分解后信號中的低頻和高頻成分分別代表了稀相和密相的脈動行為，小波包分解提取能量特徵值的方法能夠揭示氣固的多尺度特性，不同尺度上的能量特徵值四川大學碩十論文反映了氣固循環流化系統中存在的非均勻動態時空結構。Nanchang, june 25, 2007 ( xinhua ) - - the sky is darkly clouded before a rainstorm in nanchang, capital of east china ' s jiangxi province, on june 25, 2007. a rainstorm hit the city on monday
這是雷電暴雨來臨前的南昌市區（ 6月25日攝） 。 6月25日14時左右，江西南昌電閃雷鳴，暴雨傾盆，整個城市瞬間由白天進入「黑夜」 。江西省氣象臺緊急發布雷電橙色預警信號，提醒市民注意防範雷電災害。This article aims at the handwriting numerals represent the high degree of the coal gas storage bottle whose images are obtained from the imaging sensor. then some image processing and numerals recognition will be done in the system based on tms320c6201dsp, and the results are sent to the computers of control room
本文針對煤氣儲存罐體上的手寫體數字，由數字圖象傳感器獲取十個數字手寫體的圖象信號，輸入基於tms320c6201dsp的圖象處理系統中進行圖象處理和字元識別。Investigations revealed no evidence of bad weather, no messages for help, no wreckage and no sign of the 309 men aboard
調查發現沒有惡劣天氣的跡象、沒有求救信號、沒有船隻殘骸，也沒有船上309人的蹤跡。Sampling theorem to periodic non - continuous signal from cavitation of piezoelectric pump
抽樣定理在周期性非連續信號的壓電泵氣穴現象中的應用方法Just at the moment when they were taking the dainty animal from the spit, they saw edmond springing with the boldness of a chamois from rock to rock, and they fired the signal agreed upon
正當他們把那香氣撲鼻的烤羊肉從鐵叉上取下來的時候，他們看見愛德蒙象一隻羚羊那樣輕捷而大膽地在巖石上跳來跳去於是他們按剛才約定的信號，放了一槍。Then, we introduce the basic structure of pd weather radar signal processing system and their function of each subsystem, mainly including intermediate frequency receiver, clutter elimination, range correcting and smoothness, ambiguity resolution and spectrum estimation
並在此基礎上介紹了氣象雷達信號處理系統的基本構成與各部分的主要功能，主要包括氣象回波中頻接收、雜波抑制、距離訂正、平滑處理、解模糊和譜矩估計等。This thesis discusses the pulse doppler ( pd ) weather radar signal processing system including digital intermediate frequency ( if ) receiver, especially on the application of if sampling and digital demodulation technique in pd weather radar signal processing system, the influence of amplitude and phase unbalances of in - phase and quadrature channels on weather radar echo spectrum estimation, ground clutters elimination algorithms and a typical engineering realization scheme of pd weather radar signal processing system
本論文研究的是採用數字中頻接收技術的脈沖多普勒氣象雷達信號處理系統，重點研究了中頻采樣及數字解調技術在脈沖多普勒氣象雷達信號處理系統中的應用、正交雙通道幅相不平衡對氣象回波譜估計的影響、地雜波濾波演算法，以及脈沖多普勒氣象雷達信號處理系統的具體工程實現。Under the influence of the e1 ni o effect in the first half of the year, the typhoon season started exceptionally late. the first tropical cyclone warning signal was hoisted on august 9, the latest date for hoisting this signal since world war ii
由於上半年受「厄爾尼諾」現象影響，一九九八年的風季開始得特別遲，八月九日才首次懸掛熱帶氣旋警告信號，是戰后最遲懸掛熱帶氣旋警告信號的一年。First in this paper, we review the development of radar signal processing and cfar detector, analyse the structure and principle of the signal processor, ca - cfar and os - cfar detectors. then, in view of the characteristic of prc cw signal, analyses the statistics characteristic of scattering bodies, models of target, noise, ground - clutter and weather - clutter are made. these lay a theoretic foundation of signal processing and cfar detector
然後，本文針對x波段偽隨機m序列相位編碼連續波信號體制，分析了各種散射體的統計特性，對雷達目標及檢測背景噪聲（熱噪聲、地雜波和氣象雜波）進行了理論分析和統計檢驗，建立了目標及檢測背景的目標模型，確立了信號處理和恆虛警檢測的理論基礎。Figure 2. cheung chau aeronautical meteorological station and signal station on peak road west
圖二位於山頂道西的長洲航空氣象站和信號站外貌。Back in the old days, cheung chau also served as an aeronautical weather station from 1953 till 1992, when it went automatic
回想當年，長洲信號站從一九五三至一九九二年間也是一個航空氣象站，之後轉為自動化運作。The theoretic analysis and computer simulation results reveal that this influence ca n ' t be ignored. because the if sampling and digital demodulation technique can improve amplitude and phase unbalances of in - phase and quadrature channels, we apply it in the pd weather radar signal processing system and select several digital demodulation algorithms, which are easier to implement, for this system
由於採用中頻采樣和數字解調技術能有效地提高正交解調兩路的幅相一致性，本文將中頻采樣及數字解調技術應用到脈沖多普勒氣象雷達信號處理系統中，並結合氣象信號的特點選擇了適合工程實現的中頻采樣及數字解調演算法。Thirdly, we study several ground clutters elimination algorithms combining the properties of ground clutters and we get the conclusion that the frequency domain algorithm has better performance through extensive analysis and comparison. finally we proposed a typical pd weather radar digital signal processing system realization project including the software and hardware implementation
本文還結合氣象雷達地雜波的特點詳細研究了各種濾除地雜波濾波演算法，在對各種濾波演算法進行分析和折中考慮之後，選擇地雜波頻域濾波演算法應用於本信號處理系統。Firstly, we introduce the radar equation of weather radar, the basic principles of detection weather targets, the time and frequency domain properties of weather radar echo and its simulation methods
首先簡要介紹了氣象雷達的雷達方程、氣象雷達探測氣象目標的基本原理、氣象目標回波的時域頻域特性和氣象回波信號的模擬方法。Dr lam said, " the decommissioning of the last tropical cyclone signal station at the end of 2001 symbolized the end of the era of simple signals. " dr lam remarked that warning signals alone were insufficient to decide on the most appropriate precautionary measures. he urged the public to take note of the prevailing wind conditions in different regions and the latest information on tropical cyclones issued by the hko before deciding on what actions to take
林鴻?說： 2001年底天文臺關閉了香港最後一個熱帶氣旋信號站，象徵簡單信息時代的結束。林鴻?表示單憑警告信號不足以決定最適當的預防措施，他呼籲市民應要注意各區的實際風力情況，及天文臺發布有關熱帶氣旋的最新消息，然後才決定採取最適當的措施。分享友人