機載信標 的英文怎麼說
中文拼音 [jīzǎixìnbiāo]
機載信標
英文
airborne beacon-
The beacon receiver tester studied in this paper is a part of domestic ground check equipments of the some type airplane that our army imported from abroad. it is a new type of general - service check machine, and it can check if the work of various types of airborne beacon receiver testers is normal fleetly and accurately. thus, not only the operate personnel can be reduced to one person, but also the check time is short, and the check efficiency is high
本課題所研究的軍用信標機檢查儀是我軍從國外進口某型飛機地面檢測設備國產化的一部分,是一種新型的通用信標檢查儀器,它可以快速準確地檢查多種機型的機載信標機是否工作正常,不但操作人員可以減少到一人,而且檢查時間短,檢查效率高,並有很強的通用性,適用於我軍航空兵部隊多種機型的機載信標接收機。The performance targets of acquisition and tracking : the code rate of pseudorandom signals is 1m - 5mhz, the code length is 255. 511, the receiving sensitivity is - 118dbm, the dynamic range is 70db. the doppler of carrier is 75khz, the time that 10 targets are captured within 0. 2s
捕獲和跟蹤的性能指標:偽隨機信號碼率1m 5m比特/秒,碼長是255 、 511 ,接收靈敏度是- 118db ,信號動態范圍是70db載波普勒是75khz ,目標捕獲在0 . 2秒內。The exportation resistance of a device work device with what link after loading the resistance s the certain connections for should satisfying, in order to prevent mount to load the appearance produce the obvious influence. with each other connect to say to electronics equipments, for example after signal connect the enlarger, ex - class to connect class, only behind first - degree importation resistance before larger than first - degree exportation resistance 5 - 10 times are above, can think the resistance to match good ; connect the box come saying, electronics tube the machine should choose to use with for the enlarger its output to carry the mark to call the resistance the box for, but transistor enlarger then have noing this restrict, can take officing why resistance of equal or approximate box
一件器材的輸出阻抗和所連接的負載阻抗之間所應滿足的某種關系,以免接上負載后對器材本身的工作狀態產生明顯的影響。對電子設備互連來說,例如信號源連放大器,前級連后級,只要后一級的輸入阻抗大於前一級的輸出阻抗5 - 10倍以上,就可認為阻抗匹配良好對于放大器連接音箱來說,電子管機應選用與其輸出端標稱阻抗相等或接近的音箱,而晶體管放大器則無此限制,可以接任何阻抗的音箱。The target movement information which aa gunshot fire control needs can he provided by using kalman filter to process the dada offered by on hoard fire control radar and other sensors
摘要使用卡爾曼濾波器對機載火控雷達及其它傳感器提供的數據進行處理,可以得到空對空射擊火力控制需要的目標運動信息。The goal is to design a digital receiver used in secondary surveillance radar system
具體目標是設計應用於航空管制的二次雷達數字化接收機,實現對機載應答器應答信號的正確解調。It takes use of pseudo - random technology, dynamic adaptive technology, multi - channel technology, random position embed technology and so no. so the digital watermarking can resist the physical process of printing and scanning. at the same time, the watermark is binary image which includes a great deal of information, such as personal id, secret information, even a piece of map
本文特別針對印刷和掃描給數字圖像帶來的誤差的問題,設計了一種新的水印演算法,綜合運用了偽隨機處理技術、動態自適應技術、不同應用選擇不用頻帶處理技術、隨機位置嵌入技術、多通道嵌入等技術,使得本文所設計的水印演算法能夠抵抗印刷和掃描的物理轉換過程,同時本文所設計的水印是二值圖像,能夠承載大量的信息,例如個人id 、機密信息、商標標識,甚至可以是一幅地圖。Preformance requirements for airborne marker beacon receiver
機載指點信標接收機性能要求Arinc 429 digital information transmission specification is one of the data information transmission standards among the airborne equipments, which at present is used extensively in aviation industrial departments of our country
Arinc429數字信息傳輸規范是機載設備之間常用數據信息傳輸標準之一,目前在我國航空工業部門應用十分廣泛。Based on the background of the " ten - five " technology project , we introduced the last development of helicopter ' s landing devices and optolelectronic guiding equipments. this paper describes the study of beacons - based algorithms of ccd tv sensor, discusses the imaging processing, design the infrared vision - enhanced system
本論文以國防科技十五項目為背景,概要地介紹了國內外直升機著降和光電引導裝置的最新發展狀況,對機載ccd電視傳感器的信標測量演算法進行系統分析和深入研究,對圖像處理進行了討論,提出了具有創新意義的機載紅外ccd視景增強系統設計。The bootloader communicates with the host using the serial, esb, or ethernet port to transfer the kernel into the target s flash or dram
通過使用串列、 usb或以太網埠,引導裝載程序與主機通信以將內核傳送到目標的閃存或dram中。Combined with the key project of the preliminary research of national defence science and technology, the target recognition system for millimeter wave initiative homing guidance, a systematic study on the signal processing method based on the background of millimeter mave ( mmw ) missle - borne pulsed doppler radar is performed. it include specifically the detction and the recognition of the moving target and hovering helicopter under strong clutter background
本文結合國防科技重點預研項目「毫米波主動尋的制導目標識別」 ,針對脈沖多普勒體制雷達導引頭的應用背景,對基於彈載高重頻脈沖多普勒體制雷達的信號處理方法進行了較深入的研究。主要研究內容包括對雜波背景中的機動目標以及對懸停直升機的檢測和識別方法。In the dependability improvement process, we used many kinds of methods, such as dependability improvement analysis, dependability forecast, fault modeling effect analysis, dependability qualification test etc. it verified the evident improvement in the jyl - 6 weather radar ? dependability. the point estimate value is improved from 77. 7 hours to 432. 4 hours and the mtbf value reaches 144 hours. in our country, it is the first time that the airborne radar ? dependability criteria exceed 100 hours
在可靠性增長過程中通過可靠性增長方法分析、可靠性預計、故障模式、影響分析及可靠性鑒定試驗驗證等手段證實可靠性增長后, jyl - 6氣象雷達可靠性指標點估計值由77 . 7小時提高到432 . 4小時, mtbf置信下限達到144小時,在國內實現了機載雷達可靠性指標首次突破100小時。For engineering application, the signal processing technology of airborne forward ? ooking windshear weather radar system is studied in this composition. the contents include signal processing methods for weather, turbulence and windshear targets
本文從工程應用出發,綜合研究了機載前視風切變氣象雷達系統的信號處理技術,研究內容包括氣象、湍流和風切變目標的信號處理。In modem war, a precise orientation and emendation system applied to artillery spying is needed, existing orientation and emendation system usually computes position of object according uav ( unmanned air vehicle ) ' s position and pose and the pose of vidicon on uav, but orientation is n ' t enough precise
現代戰爭中需要高精度的炮兵偵察定位校射系統,然而現有的定位校射系統通常是根據無人機的位置、姿態信息和機載攝像機的姿態信息來估計目標區域的位置,定位精度不高。The simulation method of point - target, 2 - d target and 3 - d target was given in an airborne - sar side - glance condition. then the computer program was developed and some good imaging were obtained. in brief, the dissertation will be favorable to the development of sar raw signal
根據所建立的模擬模型,給出了機載sar正側視情況下點目標、面目標和三維目標的原始信號模擬方法,編寫了原始信號模擬和成像處理的程序,得到了各種目標的模擬雷達圖像。This paper studies the helicopter, the propeller - driven aircraft and the turbofan jet airplane echo modulating feature parameter model and analyses the echo signal feature. it gains the target echo ’ s the cyclical modulation feature by using the complex ar frequency range bispectrum slice. because traditional method in extraction airborne radar ’ s radiant signal feature time has certain insufficiency, this paper proposes the approximate entropy and the norm entropy as the passive feature parameter in the airplane
由於傳統方法等在提取機載雷達輻射源信號特徵的時候存在著一定的不足,本文提出把近似熵和范數熵作為飛機目標識別的無源特徵參數,給出了提取相應特徵熵的演算法,實現對機載雷達輻射源信號的識別,通過和機載雷達類型的匹配,實現對目標的識別。Conventional airborne radar clutter suppression techniques utilize the diffrernce in doppler frequency domain between clutter and target returns to suppress clutter. doppler frequency domain one - dimension adaptive filtering, which usually used in main lobe clutter suppression
傳統的機載雷達地雜波抑制方法採用多普勒頻域一維自適應濾波,即利用雜波和目標信號回波在多普勒頻域上的差別對雜波進行抑制。Space - borne radar parameters are used in simulation. base on the doppler frequency of rebound jamming signal, along - track interferometric detection scheme, which is proposed in chapter 4, is employed to detect point target rebound jamming in simulation, and the results validate the feasibility of this kind detection scheme. at last, a detailed comparison between rebound jamming and false target jamming is made
第五章介紹了彈射式干擾原理,對干擾信號特徵及干擾效果作了具體的分析,並利用機載sar參數作了干擾模擬實驗;根據彈射式干擾信號多普勒頻率的特點,利用沿航跡雙天線干涉對消技術對彈射式點目標干擾進行檢測,分析了模擬結果;最後還將彈射式干擾與虛假圖像干擾進行了比較。Radar signal simulator features economy , flexibility , practicality , etc. it ' s significant to develop radar simulators for radar research and manufacture. this dissertation discusses mainly the analysis of ground clutter spectrum in sum and difference channels for airborne phased array radars ( apar ), and the design of the radar signal simulation resource and the video output of the apar simulator
本文以機載相控陣雷達視頻信號模擬器的研製為背景,以實現和差通道的目標和雜波模擬為重點,對該系統的雷達時序產生和系統的視頻輸出等問題的設計和實現進行了較深入的研究。Firstly, by selecting and defining the resource load indexes rationally, lbmr take into consideration the effect on the resource usage of source node and destination node by the migrant. by means of vector operations, lbmr can use multiply resources in harmony. secondly, lbmr adopts the smallest k - subset random algorithin, and the load index information is provided by the information cache
Lbmr演算法的主要思想有三點:第一,基於合理選擇和定義的資源負載向量,綜合考慮進程遷移對源節點和目標節點資源利用率的影響,通過向量運算協調多種資源的平衡使用;第二,基於最小k子集隨機演算法,採用信息cache提供的負載信息作為負載平衡演算法位置策略的選擇依據;第三,基於進程生命時間的概率分佈,根據遷移進程減速( slowdown )數學期望值的改善程度,選擇適合於遷移的進程。分享友人