phase comparison 中文意思是什麼

phase comparison 解釋
相位比較
  • phase : n 1 形勢,局面,狀態;階級。2 方面,側面。3 【天文學】(月等的)變相,盈虧;【物、天】相,周相,...
  • comparison : n. 1. 比較,對照;類似。2. 【語法】比較法;【修辭學】比喻。
  1. This article discussed ar modeling method, capon method, music method and mn method four kinds of high resolution algorithms principle and has separately made the computer simulation in the ideal situation to the above four algorithms. through the comparison, the beam width of high resolution algorithm is much narrower than conventional beamforming method. then unifies the actual utilization, discussed the influence of time delay unbalance, time domain sampling, plane wave supposition and array element with scope and phase not identically to the beamforming and made the computer simulation

    本文首先討論了ar模型法、 capon法、 music法和mn法四種高解析度演算法的原理,在理想的情況下分別對上述四種演算法作了計算機模擬,通過比較,高解析度演算法的束寬比常規波束形成法窄得多;然後結合實際運用時的情況,重點探討了延時失配、時域抽樣、平面波假設和基陣的幅相不一致對波束形成的影響並做了計算機模擬。
  2. As a comparison, ba1. 03ce0. 8gd0. 2o3 - was synthesized by sol - gel method. among these samples, nonstoichiometric samples were synthesized for the first time. the research work involved : the crystal phase of the sinters were determined by xrd ; ionic conduction under different experimental atmospheres was measured by gas concentration cells ; performances of hydrogen - air fuel cells with the sinters as electrolytes and porous pt as electrodes were measured

    用粉末x射線衍射儀鑒定它們的結晶相;在( 600 1000 )范圍內,以燒結體作為電解質隔膜,多孔性pt黑為正、負電極, pt - rh合金網為集電極,分別組成氫濃差電池、氧濃差電池及氫?空氣燃料電池並測定了它們的性能,研究了不同氣氛下樣品的離子導電特性及影響燃料電池性能的因素。
  3. The design of dgwfs and the quadratically distorted diffraction gratings is introduced firstly in chapter 1. secondly, based on the prevenient algorithms, the phase retrieval for the novel dgwcs is discussed by comparison, also more analysis is made by examples in chapter 2

    第二章在總結、研究和改進前人理論方法的基礎上,總結了適合光柵型波前曲率傳感器相位恢復的三種演算法,並作了詳細的理論推導、分析和舉例說明,完善了光柵波前曲率傳感器的相位恢復理論。
  4. It was showed that c. arborescens ecotype wu was generally the most drought tolerant one except lower than c. arborescens ecotype xj which was the maximum in may, bore comparison with zygophyllum xanthoxylum by estimating seasonally ; c. latens ecotype nx was significantlly lower than c. arborescens ecotype wu, the result was contrary to being known ; c. arborescens ecotype kerqin was significantlly lower than wu ; xj, the maximum in may, showed no else great difference to nx ; c. lanata was high in april and not high afterwards, however its phenological phase presented visible changes as compared with the original life patterns in western america

    Arborescensecotypexj ) 5月耐旱性表現最強,其他時間與寧夏駝絨藜差別不大;北美駝絨藜( c lanata ) 4月拐點很高, 4月以後耐旱性降低,其物候期與原分佈區(美國西部)相比發生了很大變化。駝絨藜屬植物在不同季節中蒸騰速率的日變化基本上都為典型的單峰曲線。
  5. As a traditional method, the phase - comparison method has a merit of low cost but a demerit of poor bearing accuracy

    比幅測向法是一種傳統的方法,它的最大優點是價格成本較低,但測向精度較差。
  6. So, deep - through analysis of the phase - comparison method and adoption of new evaluation methods is to be done to increase the bearing accuracy and achieve the best price performance, satisfying the equipment requirement of navy

    因此對它進行深入的研究和採用新的估算方法來提高其測向精度,使性價比達到最優,以滿足海軍裝備的需求。
  7. To increase the bearing accuracy of amplitude - comparison, the multi - channel system was chosen, the angle of reaching of moving antenna pattern serial was estimated from the frequency domain using the phase - delay estimating method, and at the same time, the selection of antenna, quantization of signal and touch switches were optimized in concrete engineering practice, and so the requirement of the index was satisfied

    為提高比幅測向的精度,選用多通道體制,採取相位延時估計法從頻域來估算移動天線方向圖系列的達到角,同時在具體的工程實現上對天線選取、信號的量化、去摸開關等進行優化,從而滿足指標要求。
  8. Focusing on the tactical index of ew system - bearing accuracy, this article makes deep - through analysis, comparison and study of the theory basis for traditional direction finding method. a 16 - channel monopulse amplitude - comparison direction finding method and new phase - delay estimating method has been proposed to use, through computer ' s analog computation and relative measures in actual engineering practices, the bearing accuracy of traditional method has been increased and the service requirement of the ew weapon system and adaptability of equipment satisfied

    本文圍繞著電子戰武器系統的戰術技術指標?測向精度,對傳統的測向方法的理論基礎進行了深入的分析、比較和研究,提出了採用16通道單脈沖比幅測向體制和新的相位延時估算方法,通過計算機的模擬摸擬計算,以及在實際的工程實現中採取的相關措施,解決了採用傳統的測向方法提高測向精度,滿足電子戰武器系統的戰術技術指標要求和裝備的適裝性。
  9. To the single pulse angle measuring, phase comparison and phase sum - difference angle measuring method are discussed and compared. sum - difference channel modeling and simulation are made. based on system research and signal processing discussed above, some basically jamming methods are discussed and simulated

    對于單脈沖測角方法,研究了相位比較法和相位和差單脈沖測角方法,對兩種方法進行了比較並給出了和差通道方向圖的模擬。
  10. The study has completed the design of two - phase inverter and made up of the two - phase inverter - motor system for experimental use it is a variable frequency adjustable speed system with a open - loop control of rotational speed, which consists of voltage - controlled oscillator circulating assign device inverter circuit and two - phase induction motor a accurate mathematical model is set based on the whole system, and simulator program of dynamic and steady condition is established, which is used to calculate the dynamic and steady performance by kron and symmetrical coordinate converter by simulator calculation and experimental research with specific parameter of the system, a comparison is made between predicted and experimental characteristics, experimental measurements are shown to compare closely with corresponding theoretical result it is compared with some variable frequency adjus table speed system comprising inverter and single - phase induction motor from the system efficiency torque pulsation and the effect of two - phase inverter capacitance based on the conclusion, harmonic cancellation pulse width modulation control of a two - phase inverter - fed induction - motor drive system is researched, which cancelled the low harmonic and improve the system performance

    通過對電機的kron變換和對稱分量變換,建立了系統較精確的數學模型,編制了系統動態及穩態運行的模擬計算程序分別計算系統的動態和穩態性能。通過對系統的具體參數進行了模擬運算和實驗研究,實驗和模擬結果進行比較,說明實驗和理論較為一致,並從系統效率、轉矩脈動及兩相逆變器電容的影響等方面與各種逆變器和單相異步電動機組成的變頻調速系統加以比較。在此基礎上,對兩相逆變器供電-異步電動機系統使用諧波抑制pwm控制進行了研究,由於減少了低次諧波,改善了系統性能。
  11. Abstract : performance evaluation on five kinds of dust collectors installed in the 2nd phase progress project of pangang, its efficiency and the comparison of measured parameters of air quantity with design parameters were taken in paper. the results showed that the electric dust collectors, water dust scrubbers, large bag dust extractions and cyclone dust collectors performed satisfactorly, small bag dust extractions took the bad with the good, and foam dust collectors went badly

    文摘:通過對攀鋼(集團)公司二期工程上馬的5種類型除塵器性能進行監測評價,重點對除塵器除塵效率和處理風量的實測值與設計值相比較,調查監測結果表明:電除塵器、水膜除塵器、大型布袋除塵器和旋風多管除塵器性能良好;小型布袋除塵器運行情況良莠不齊,泡沫除塵器運行情況差。
  12. Based on the research of the complex angle and the bias compensation techniques, the dynamic compenstion with relative phase is developped for elevation tracking & measure with the amplitude - comparison monopulse radars, and it is proved to be a optimum technique by thoery and simulations

    因此,在深入研究復角法和固定偏差補償法的優缺點基礎上,本文針對單脈沖比幅測角體制的雷達,提出了一種新的俯仰角測量演算法?聯合相位的動態偏差補償法,理論分析和計算模擬證明這種演算法了這種演算法的優越性。
  13. The traditional construction technique and the technology are further improved in accordance with the study on the comparison between the ministerial standard ( sdj249 - 88 ) and the standard for the three gorges project ( tgps09 ) in light of the special requirement for both the quality examination and evaluation standards during the construction of the concrete of the surface outlets for flood discharge in the second construction phase of the project ; with which the quality of the construction is guaranteed to meet the quality standard of the three gorges project

    摘要在三峽二期工程泄洪表孔混凝土工程施工中,通過對部頒標準( sdj249 - 85 )與三峽標準( tgps09 )的比較研究,針對三峽混凝土單元工程質量檢測與評定標準的特定要求,進一步改進傳統的施工技術和施工工藝,確保泄洪表孔混凝土工程施工質量符合一流的三峽工程質量標準。
  14. This article analyses the signal characteristics of several typical cw radars, and presents the principle and application of doppler radar. as one focal point, this article researches the generation and math characteristics of pseudorandom code modulated signal, analyses the spectrum of pseudorandom code phase modulation radar signal, and presents this kind of signal ' s application in distance and speed measurement. this article also researches the application of mono - pulse amplitude comparison radar in angle measurement finally, this article elaborates the working process of crs in uast

    本文分析了幾種典型的連續波雷達信號的特性,介紹了多普勒雷達的原理和應用;研究了偽隨機編碼信號的產生和數學特徵,著重分析了偽碼調相連續波雷達信號的頻譜,及其在雷達測距、測速方面的應用;研究了單脈沖幅度比較體制在雷達測角中的應用;最後,闡述了超近反導系統中復合體制雷達的工作過程。
  15. The methods of direction finding mainly include maximum ( minimum ) signal method, amplitude - comparison method, phase - comparison method and time difference method

    測向的方法主要有最大(最小)信號法、比幅法、比相法、時差法。
  16. According to the technical requirements of data relay satellite system, we determine to exploit and analyze the oscillation amplitude comparison mono - pulse mode in a single channel mono - pulse, angular tracking manner in comparisons among several angular tracking modes e. g. cone scanning, step tracking, phase comparison mono - pulse and oscillation amplitude comparison mono - pulse

    根據數據中繼衛星系統技術指標與技術要求,通過比較圓錐掃描、步進跟蹤、相位比較單脈沖與振幅比較單脈沖等跟蹤方式的優、缺點,確定採用振幅比較單脈沖方式中的單通道單脈沖角跟蹤方式,並對此跟蹤方式進行了詳細的研究。
  17. In the comparison of frequency standard, the ordinariest and the simplest method is phase comparison

    在測量頻率標準指標的比對中,最常見且最簡單的是採用比相測量的方法。
  18. Automatic phase comparison circuit

    自動相位比較電路
  19. Automatic phase comparison

    自動相位比較
  20. Firstly, the study of real two - channel data recorded by the airborne battlefield radar is made based on the methods of gmti, which including the study of methods of two - channel equilibrium, that of the precious estimate of beam scanning angle, that of the doppler center, that of the compensation for pattern error and that of gmti and that of location of the moving target using the phase - comparison mono - pulse method

    首先,結合動目標檢測方法,對機載遠程戰場偵察雷達實驗系統錄取的雙通道數據的處理進行了研究。內容包括兩通道均衡方法研究,波束掃描角精確估計方法研究,多普勒中心估計方法研究,方向圖誤差補償方法研究,動目標的檢測和干涉定位方法研究。
分享友人