雷達部分 的英文怎麼說
中文拼音 [léidábùfēn]
雷達部分
英文
radar pack- 雷 : 1. (雲層放電時發出的響聲) thunder 2. (軍事上用的爆炸武器) mine 3. (姓氏) a surname
- 達 : Ⅰ動詞1 (暢通) extend 2 (達到) reach; attain; amount to 3 (通曉; 明白) understand thoroughly...
- 部 : Ⅰ名詞1 (部分; 部位) part; section; division; region 2 (部門; 機關或組織單位的名稱) unit; mini...
- 分 : 分Ⅰ名詞1. (成分) component 2. (職責和權利的限度) what is within one's duty or rights Ⅱ同 「份」Ⅲ動詞[書面語] (料想) judge
- 雷達 : [訊] radar (縮自 radio detection and ranging)
- 部分 : (整體中的局部或個體) part; section; portion
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The works of this paper are mainly about the study for ultra wide - band ( uwb ) signal radiating - designing for effective uwb antenna, and uwb signal scattering - investigating of composite scattering for targets upon ground. firstly, the radiating characters of uwb signal and development of uwb antenna are discussed an uwb planar horn antenna is designed this antenna is characterized with u - balun, simple construction and perfect performance
本文的研究是「九五」國防預研「超寬帶( uwb )雷達體制及關鍵技術研究」項目工作的一部分,主要包括兩方面內容:超寬帶信號的輻射-高效超寬帶天線的研製;超寬帶信號的散射-地表目標的復合散射研究。Those include power supply circuit design ; ground plane design and sample clock design. combining some radar development, its high - speed a / d circuit is tested, and has given out some test results
最後結合某雷達研製,對其高速模數轉換電路設計進行了實際測試評估,並給出了部分測試結果。On the basis of introducing the principle of the tf / ar radar, this paper analyzes the conditions of effectively jamming the tf / ar radar in typical tactical act of hedgehopping, which include the disposition and quantity of electron reconnaissance / jammer, calculates the capability request of equipments in the method of sensor / hand - emplaced jammer, and concludes that it is difficult to jam tf / ar radar at the present time
摘要在介紹地形跟隨迴避雷達工作原理的基礎上,通過設定典型超低空突防飛機的戰術行動,分析了對雷達實施有效干擾所必須具備的條件,包括偵察干擾機的部署、數量要求等;並計算了在傳感器擺放(投擲)式干擾機模式下對裝備的性能要求,得出了在目前技術條件下,對地形跟隨迴避雷達實施干擾在技術和戰術上都是困難的。Mixers are the key components of many microwave and millimeter - wave systems. the super - heterodyne receiver is always applied in modern communication system, mixer becomes the key component as is at the first part of system. but it is more and more difficult to get the choiceness lo source of the same band with the system is working at high frequency especially in the millimeter - wave. sub - harmonic mixer is a good solution to this problem now. in this circuit we need just half 、 quarter 、 even 1 / 8 of the rf signal frequency. in this paper the design and fabricate of sub - harmonic hmic mixers ( 2, 4 ) at w - band are introduced
混頻器是微波通信、射電天文學、雷達、等離子物理、遙控、遙感、電子對抗,以及許多微波測量系統中至關重要的部件。在現代通信系統中,毫米波頻段通常採用超外差接收機,混頻器作為第一級就成為關鍵部件。由於在毫米波頻段,同頻段高性能的本振源成本高,技術難度大,採用分諧波混頻技術是解決此問題的有效途徑,只需射頻頻率1 / 2 、 1 / 4甚至1 / 8的本振頻率即可實現混頻。It is becoming trends of modem radar technology, which are ultra - wide band, high resolution, low probability of interception, intelligent, according to the points of high tech local war happened last several decades
針對高技術局部戰爭的特點,現代雷達技術正朝著超寬帶、高分辨、低截獲、多功能、智能化的方向發展。This paper is a part of the important national defence research project - research on the technique of three millimeter pulsed radar
本文是國防重點科研課題「三毫米脈沖雷達探測技術」的組成部分之一。First, in order to verify the correct of this retrieval month, by using the data of three - dimensional wind field, raininess field and temperature field that are output by mm5 numerical simulation, we climate the radial velocity field and echo intention field in the in - phase observation area of dual - doppler radar, then, on the base of the upwards retrieval theory and using the radial velocity field and echo intention field in the in - phase observation area of dual - doppler radar, we retrieve the atmospheric three - dimensional wind field
首先,為檢驗此種反演方法的可靠性,我們使用mm5數值模式輸出的三維風場、雨強場、溫度場等數據,分別模擬生成兩部雷達同步觀測區的徑向速度場和回波強度場,然後根據以上的反演理論利用模擬的雙多普勒天氣雷達觀測到的徑向速度場和回波強度場反演出大氣三維風場。The modeling and simulation of sea clutter is very important in radar system simulation
海雜波的建模與模擬是雷達目標模擬中環境模擬的重要部分。Progress in every branch of radar was constant and unceasing during 1939.
自從1939年以來,雷達的每個部分的技術一直在繼續不停地發展。Radar sub - system is an essential part of vts system
雷達子系統是vts系統的重要組成部分。The main research works of this dissertation are aimed to design of radar waveform and the application of wavelets in ultra - wide radar, including : the design of a new kind of hybrid radar and the research of time side - lobe suppression for pulse compression, the design of receiver r adio front end in data acquisition of ultra - wide band radar, the time delay estimation based on wavelets ( packet ) analysis
本文主要進行雷達波形設計研究以及研究小波理論在超寬帶雷達中的應用,集中體現在以下幾個方面:一類新的組合雷達波形設計及壓縮脈沖時間旁瓣抑制技術研究、超寬帶雷達多通道數據採集方法中前端射頻接收部分的設計及研製、基於小波(包)方法的時延估計方法。Since the echo signals are partly received, this radar system has detected the target adopting the processing mode of blocking echo signal before and after, and the problems of the isolation between transmitter and receiver and blind range are solved
該體制雷達採用前後截斷回波信號處理方式,當接收部分回波信號后就對目標進行檢測,解決了收發隔離和盲距問題。Because the synthetic - aperture radar can ’ t be influenced by the weather and it can accomplish high graphics reconnaissance for the landform, establishment and immovable or slowly - speeding target in the area of mapping. so it has the important martial value. this had been testified in the series of brushfire in these years
由於合成孔徑雷達( synthetic - apertureradar )可以不受氣象影響,對測繪區的地形、設施、固定和低速運動目標完成高分辨的成像偵察,因此具有重要的軍事應用價值,這在近年來的多次局部戰爭中得到了充分的驗證。Main conclusions drawn from the analyses of calculating results are as follows : ( 1 ) the microwave absorption of atmosphere gas have obvious attenuation at the wavelengths for cloud detection, thereinto, the water attenuation effect changes greatly, so the 94ghz cloud detecting radar should have water vapor attenuation correction scheme. ( 2 ) when 37ghz and 94ghz radars detect clouds, the difference between the atmosphere and cloud attenuation and the large variety of radar reflectivity conduce the intension of the radar backscatter signals change. ( 3 ) for the thin cloud layer and low water content of cloud, 37 - ghz radar backscatter signals are not as good as 94 - ghz radar, that is to say that the 94ghz radar has better capability in thin clouds detection
本工作得出如下結論: ( 1 )大氣氣體的微波吸收在測雲波段產生明顯的衰減,其中水汽衰減效應變化很大;即將上天的空間94ghz測雲雷達必須有水汽衰減訂正方案; ( 2 ) 37ghz和94ghz雷達測雲,由於大氣和雲衰減不同和雷達反射率的很大差異,導致雷達回波信號強弱不同; ( 3 )對雲層較薄、含水量較少的雲,在不計雷達參數的情況下, 37ghz雷達回波信號不如94ghz測雲雷達,也就是說94ghz對薄雲有更強的探測能力;對雲層較厚、含水量大的雲,由於強衰減的作用, 94ghz雷達回波信號小於37ghz雷達; ( 4 )從大氣衰減的不利因素方面考慮,空間94ghz雷達測高層薄雲的效果最好;測低層薄雲時需要考慮氣體衰減訂正;因濃厚雲的強衰減作用,探測其中下部的能力大大減弱,不僅要進行衰減訂正,而且要藉助其他信息來反演整個雲層的含水量垂直分佈; ( 5 )為了獲得從極薄到極濃厚雲的垂直分佈探測能力,未來測雲雷達系統最好採用雙波長甚至三波長(如94 、 37和13ghz ) 。In the third chapter, the hardware design of the radar echo simulator is introduced, including the unitary chart of hardware structure and design of each part in this system, which is composed of designs of computer interface, controlling sdram and controlling ide harddisks and some introduction about d / a and fpgas used in this system
再次,介紹了本雷達回波模擬器的硬體設計,包括總體硬體結構框圖、系統各部分的硬體設計。系統各部分的硬體設計包括計算機介面設計、大容量高速緩存sdram的控制設計、 ide介面硬盤的控制設計、關于d / a的介紹和本系統使用的fpga的介紹。The initial field of the model is the in situ observational data. combining the observational data by the doppler weather radar, the distribution and evolution of macro - physical as well as micro - physical variations such as wind field structure, radar echo structure, overhang echo, bound weak echo region, strong echo wall, water content, etc. in the storm were analyzed
利用中國科學院大氣物理研究所建立的完全彈性三維雹雲數值模式,模擬了1996年6月29日發生在北京東北部京冀交界地區的一次強單體雹暴過程,並結合多普勒雷達探測資料,分析了風暴的流場結構,雷達回波結構特徵,含水量場等宏微觀物理量的分佈及其演變。The signal processor is the centre of radar, and cfar processing technique is one of the most important methods to control false alarm probability in radar auto - detecting system
雷達信號處理機是雷達系統的核心部分,而恆虛警處理是雷達自動檢測系統中控制恆虛警的重要手段,它在雷達自動檢測過程中起著極其重要的作用。The phase shifter, as a important component in transmit / receive ( t / r ) module of phased array radar, steer the electronic beam for inertialess scanning
移相器是相控陣雷達發射/接收( t / r )組件的重要組成部分,用來控制雷達波束的無慣性電掃描。It has the characteristic of non - gear - box, large output torque, small volume, easy control, fast response, high track precision, high reliability etc. the system has potential advantages over substituting for traditional hydraulic or pneumatic missile actuator servo control system and has wide prospect in the fields of aerial actuator, servo valve, robot, radar antenna etc. the system ' s operation principle, control idea, functions and realization of each component are discussed in detail
該系統在取代傳統的液壓、氣動導彈舵機伺服控制系統方面有很大潛力,同時在航空舵機、伺服閥,以及機器人關節的直接驅動、雷達天線等領域具有廣闊的應用前景。論文詳述了系統的工作原理與控制思想,以及系統方案的設計和各組成部分的功能與實現方法。After that, we analyze the internal resources and capability of the hs - sysway company by radar chart and value chain etc. then we analyze the advantage and disadvantage of the holding chances and cutting threaten, using the vrio frame. the results are following - the main advantages for hs - sysway are : its support for capital and tobacco market, ierp ( developed independently ) and differentiation, erp ' s marketing capability, technique development capability, local costs and services etc. ; the main disadvantages are : the strategy orientation is unclear and carried out weakly, low level management, persons with high ability are short of or missing, weak maturity and difference of products, short of core technology and capability etc. on that basis, we analyze the stakeholders and specify the task of the company ; we use the swot analysis and large tactic matrix etc. and bring forward the basic strategy of the development that is the aggressive strategy
其後,運用雷達圖分析、價值鏈分析等方法對企業內部的資源與能力進行了分析,然後利用vrio框架,對企業能夠用以抓住機會、削減威脅的優勢及弱點進行了分析,得出宏聲新思維公司的主要優勢是宏聲集團的資金及煙草市場支持、自主開發的ierp及其差異化、 erp營銷能力、技術開發能力和本地化的成本及服務等,主要弱點是戰略定位不清晰且貫徹不力、管理水平低、高素質人才匱乏且有流失、產品成熟度和差異性不高、缺乏核心技術與能力等。分享友人