airborne time 中文意思是什麼
airborne time
解釋
空中時間-
Second, this paper analyzes the time - frequency distribution of the clutter from airborne pulse doppler radar ( pdr ). the side - lobe clutter, which is the main factor to influence the pdr, is analyzed and calculated. based on the simulation of typical geometry of the land, we analyze and discuss the side - lobe clutter and concluded that the dft of can be considered as the phase of the coho
並且根據各種典型地貌的近似模擬，從統計特性上和頻率域上對脈沖多卜勒雷達的旁瓣雜波進行了分析討淪，還得出脈沖多卜勒雷達的dft可以近似地看作相參積累，並在程序的編制中利用了這一個結論。 -
At the same time the pilots of the two aircraft were also receiving alerts from their airborne traffic collision avoidance system ( tcas ) equipment
兩架航機的機師同時也收到機上交通警報及避免碰撞系統儀器的警報。 -
In addition to the conventional techniques such as low sidelobe antennas and displaced phased center antenna ( dpca ), there has been great interest in space - time adaptive processing ( stap ) because it can suppress clutter effectively and improve the detection performance of airborne phased array radar evidently
除了採用低副瓣天線、偏置天線相位中心（ dpca ）等傳統雜波抑制技術，能夠有效提高機載相控陣雷達地雜波抑制能力和動目標檢測性能的空時二維自適應處理（ stap ）受到了廣泛關注。 -
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 fewer spatial degrees - of - freedom ( dof ) are always hoped. with the progress in stap being made continually, people find stap can be used in many other radars besides airborne early warning surveillance radars if only the clutter is space - time - coupling
隨著空時二維處理研究的深入，人們發現它不僅可以應用於機載預警雷達，只要雜波存在空時耦合的特性，空時二維處理都可以發揮作用。 -
Airborne remote sensing image real - time transmitting system and implementation in laboratory
航空遙感圖像實時傳輸系統及實驗室實現 -
If you don ' t qualify in the relevant training schools, you can ' t participate in the subsequent battles ? you need your airborne wings to play online in the terrific night - time parachute attack mission, for example
舉個例子：如果你不符合學校訓練的有關要求，你不能參加接下來的戰爭你需要得到你的飛行章后才能在線玩令人恐怖的夜晚跳傘攻擊任務。 -
The optical channel models for airborne submarine laser communication are built. the multipath time spreading of signal pulse is studied. the waveform of received signals in receiver in submarine laser communication system is analyzed and simulated
通過蒙特卡羅方法的模擬研究，建立了機載激光對潛通信的光脈沖傳輸模型，研究了信號光脈沖的時間擴展，分析並模擬了接收面上的接收波形。 -
For slow targets whose doppler frequencies fall into clutter doppler band, the performance of frequency domain one - dimension filtering is seriously degraded. in an airborne radar, there is interdependence between the clutter doppler frequency and spatial position. space - time adaptive processing ( stap ) utilizes this interdependence to suppress clutter and get perfect main - lobe and side - lobe clutter suppression
空時自適應處理利用機載雷達地雜波多普勒頻率與地雜波空間位置的耦合性，根據目標和雜波在空間-多普勒頻域二維空間分佈上的差別對雜波進行抑制。 -
Under the background of the strapdown integrated navigation system ( sins ), designs some sins with arinc 429 interface, analyzes the communication protocol, and in the guarantee of the system precision and the real - time request, accomplishes the modularized software of the arinc429 interface subsystem, and gives long time debugging and testing results to the sins system. this paper designs the airborne integrated navigation system based on the 1553b bus, completes the bus information flow design, and carries on thorough analysis on the communication protocol of the 1553b bus
本文結合捷聯組合導航系統的應用背景，設計了含有arinc429總線介面的某型捷聯慣導系統，分析了其中的arinc429總線協議，並在保證系統精度和實時性的要求下，完成了該捷聯組合導航系統中arinc429介面系統的模塊化軟體設計，並給出對系統長時間聯調測試的分析結果。 -
It may give hints on quality system improvement. the electronic parts in the airborne computers are ageing obviously more and more as the time goes on. it happened that the airborne computers were sent here for repair many times with short time spans
在航空電子維修站修理的機載電子計算機，其電子元器件隨著使用時間的增長，老化越來越明顯，有時會造成機載計算機在短時間內連續送修的情況。 -
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。 -
Determination of vibration endurance test time and qualification criterion for airborne electronic equipment
機載電子設備耐振試驗時間的確定與合格判據 -
The using of dbs into the gmti mode of battlefield awareness radar adopting beam scanning may get the ground scene image at large area, at the same time, making gmti and marking the moving target on scene image. dbs is a kind of technique which improves the resolution of airborne radar
把多普勒波束銳化（ dbs ）技術用於波束掃描的戰場感知雷達的地面動目標檢測模式，可以快速得到大面積的低分辨地面場景圖像，而且可同時進行地面動目標檢測，並把動目標標定到場景圖像上。 -
By studying the present sar algorithm, analyzing the motion status of the plane and considering the requirement of the real - time processing, we improve the range - doppler algorithm to suit the real - time processing of the airborne sar imaging. the algorithm derived from the range - doppler algorithm has a simple structure and can compensate the plane ' s nonlinear motion and suit to real - time processing. the real - time processing experiments of the airborne sar imaging test the algorithm efficiency
本文通過對現有的合成孔徑雷達成像演算法的研究，以及對飛機運動狀態的分析，針對實時處理的要求，對距離多普勒演算法稍加改進，使之適合於機載合成孔徑雷達成像實時處理使用，該演算法根源於距離?多普勒演算法，結構簡單，既能夠對飛機的不規則運動進行有效的補償，又適合於實時處理。 -
The software has been worked out with vc + +, which can realized " real - time " processing to airborne image sequences. at this settings the system can process 25 frames per second, and the rmse is smaller than 0. 325
用vc + +編程實現了對航攝圖像序列的實時處理，其幀處理率達25幀秒，均方根誤差小於0 . 32像素。 -
At present, the measuring methods are not enough and these known methods are in all kinds of shortages. so the institude of atmospheric physics, chinese academy of sciences cooperate with jilin weather modification office, changchun consigning the institude of geograpy, changchun to develop the airborne up - looking microwave radiometer for the first time in china
然而目前測量的手段並不多，且已有的手段中又各有其局限，鑒于這種情況，中國科學院大氣物理研究所與吉林省人工影響天氣辦公室合作，委託中國科學院長春分院地理所在我國首次研製了對空機載微波輻射計。 -
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。 -
To shorten aircraft r & d time and reduce cost, simulation is necessary, aircraft is an airborne one and environmental actions on aircraft are simulated by the loading system
在模擬系統中，飛行控制系統採用實物，而飛行器在飛行過程中所受的外界作用力則由電液伺服加載系統來提供。 -
To accelerate the time - consuming analytical procedure involving 2 - 5 days of biological testing, we employed a real - time pcr protocol in conjunction with the personal sampler for collection of airborne viruses
為減少2 5天生化分析所需時間，本研究使用即時定量聚合酵素反應技術結合個人采樣器採集空氣中病毒。
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