target signal 中文意思是什麼

target signal 解釋
目標信號
  • target : n 靶子,標的;目標;(嘲笑等的)對象;笑柄 (for); (儲蓄,貿易等的)定額,指標;小羊的頸胸肉;...
  • signal : n 1 信號,暗號;信號器。2 動機,導火線 (for)。3 預兆,徵象。adj 1 暗號的,作信號用的。2 顯著的...
  1. In this paper, the concept of acceleration ambiguity function ( aaf ) and acceleration resolution is put forward for the first time. using aaf, the effects of target ' s relative acceleration on several outputs of a linear - phase matched filter are analyzed, such as the output signal - noise - ratio loss, the doppler resolution, the constraint on optimal accumulative time ( opt ) and their tolerable limits

    論文首次提出並研究了加速度模糊函數和加速度分辨力的有關概念,並以加速度模糊函數為分析工具,詳細討論了加速度對線性相位匹配濾波器的輸出信噪比的損失程度、對多卜勒頻率分辨能力的影響程度、對最優相參積累時間的約束關系以及線性相位匹配濾波器輸出受加速度影響的容限等問題。
  2. By using the processing method of sliding time window, the problem of the periodicity range ambiguity is solved. meanwhile, the problem of range ambiguity which is produced because the range of target is biger than the maximum range of radar is also solved by using this method. then, the pulse width parameter which is the most important in the parameters of fmicw is analyzed. the stricter restrict is given to ensure the range spectrum has only one beat frequency after signal processing. at last this thesis introduces the different signal processing methods of fmpcw and fmicw

    同時利用該方法解決了fmpcw信號的由於目標距離超過雷達的最大單值測距范圍而引起的距離模糊問題。然後對fmicw波形參數中最為重要的脈沖寬度進行了分析,給出了更為嚴格的約束條件,保證了信號處理后距離譜峰值的唯一性。最後,分別介紹了fmpcw和fmicw信號的不同處理方式,並對兩者不同的時域濾波性能進行了比較,並對二者的差異進行了分析。
  3. Based on the analysis of the beat frequency signal, the expression of the beat frequency phase is deduced. the expression indicates physics meanings of quantities to be detected and supplies theoretical bases for detection methods. by using two - dimensional fft, the range and velocity information of target is got out from the echo. according to the periodicity range ambiguity of symmetrical pulses in fmpcw, the processing method of sliding time window is used

    通過對差頻信號進行的分析,得出了差頻相位的具體表達式,表現出了要檢測的各量的物理意義,對檢測的方法提供了理論依據。利用二維fft方法,可以有效地提取回波中目標的距離與速度信息。對于fmpcw信號由於均勻脈沖產生的周期性距離模糊的問題,採取時間波門的處理方法。
  4. Estimating a dynamical trajectory of the reverberation and then taking it out from the observation, all target echoes should be obtained. that is called signal separation

    信號分離是指在相空間中估計混響動力學軌道,從觀測中減去估計的混響,從而分離出目標回波。
  5. The concept of irradiance signal - to - noise ratio ( snr ) on the target plane and the minimum of the irradiance that can be detected by the detector was taken as the beginning, combined with a thorough analysis of the spectrum radiating feature of the target and the sky background, the atmosphere conditions, spectral filtering and the influence that the various components in the system have on the target irradiance on the detector ' s target plane and the background irradiance snr, the equation of the flying bomb ' s effect range affected by the point of burst measuring system is made, and all related factors that have an impact on the effect range are analyzed as well

    從探測器靶面上輻照度信噪比的概念、探測器的可探測輻照度最小值出發,在詳細分析目標、天空背景的光譜輻射特性、大氣條件、光譜濾波技術以及系統各環節對探測器靶面上目標與背景輻照度信噪比的影響的基礎上,推導了炸點測量系統對爆炸的飛行彈體的作用距離方程,分析了影響作用距離的諸因素。
  6. Chapter 2 deals with the ground echo signal of sar, and establishes the signal models of static target and moving target

    第二章研究了合成孔徑雷達回波信號,建立了靜止目標和運動目標的回波模型。
  7. The master dissertation introduces passive correlative orientation system and base theory in signal dispose briefly in the first place. the system takes tv sound fm signal from tv satation signal. the power rate of tv station signal to sound signal is ten to one. in the case of submerged by mussy weave and machine ' s hot noise, dispersed target signal is feeble

    系統採用電臺的電視伴音調頻信號,其中電臺信號與伴音信號功率之比基本為10 : 1 ,並且目標散射信號較弱,一般情況下淹沒在雜波和機器熱噪聲之下,採用常規的脈沖檢測方法很難對遠距離的目標進行檢測,而以電臺直達信號作為參考與目標回波信號進行相關檢測;系統中信號的相關處理會產生旁瓣,而強目標的旁瓣會影響附近的弱目標檢測。
  8. The specific research methods are listed : 1. matched filter taking the max ouput snr as the best rule correlates nonstop divided signal and divided echo to detect low snr target signal. then all one dimension divided correlation outs and done fft in portrait to leach interferential signal such as static or low rate mussy meaves, many pathway echo and so on and to take target ' s time difference and doppler frequency that combine parameters that target ' s direction taken from antenna and so on to implement target ' s orientation and tracking

    具體研究方法如下: 1 、採用以輸出信噪比最大為準則的最佳匹配濾波器來對分段的參考和目標信號作相關處理來檢測低信噪比目標信號,然後對一維分段相關輸出組作縱向傅立葉變換來濾除靜態或低速的雜波、多徑回波等干擾信號,並提取目標的時差和多普勒頻率,再結合由天線獲得的目標方向等參數,就可以實現目標的定位和跟蹤。
  9. To ensure the reliability of tracking the target, signal attenuation and boresight error must be predicted accurately

    要保證導彈跟蹤目標的準確性,必須預測在給定掃描角下的信號衰減和瞄準誤差。
  10. Based on the mathematical model of target signal of millimeter wave radiometer on bomb, the digital simulation is made of the target signal

    摘要從彈載毫米波輻射計的目標信號數學模型出發,對目標信號進行了模擬計算。
  11. And target signal cancellation is a serious problem. many signal processing techniques have been proposed to avoid signal cancellation

    因此,在寬帶旁瓣對消器中目標信號被消除是一個非常嚴重的問題。
  12. At last, this paper analyzed the influence of the inversive receiver to the chracteristic of the clutter and the ratio of signal power and the noise power, discussed the effective detection of target signal in correlated clutter, and then put forward a new method naming multi - periods shift accumulation for detecting moving target when not knowing the exact movement parameter

    最後,本文分析了倒置接收對目標回波信噪比及雜波特性的影響,討論了在相關雜波區對回波信號有效檢測的方法。針對如何在彈目相對運動參數未知的條件下對高速運動目標進行積累檢測這一問題,提出了一種多周期移位積累的新方法。
  13. To detect target signal with strong sea clutter, to increase the clutter visibility of sea radar and enable higher resolution and reliable monitoring performance of sea radar, three kinds of key clutter modeling technology for sea radar are studied in detail, which are clutter scattering mechanism modeling, clutter statistics modeling and clutter nonlinear modeling on basis of elaborating sea clutter characteristics

    摘要為了能在強烈的海雜波背景下檢測到目標信號,從而提高海面雷達的雜波可見度,使海面雷達具有更高的解析度和可靠的監測性能,在精確的描述海雜波特性的基礎上,詳細研究了雜波散射機理建模、雜波統計建模和雜波非線性建模3種海面雷達雜波建模關鍵技術。
  14. The main function of the module is as follows : it can detect the cw signal transmitted by the active sonar, and measure the frequency of target signal and the direction of target. it can execute the tracking order sent by the display and control platform, and track the searched target, measure the target signal repetition intervals and target distance, and give the reliability of estimated distance

    該軟體的主要功能包括:對主動聲吶cw脈沖信號進行檢測,測量目標信號的中心頻率,測定目標的方位;執行顯控臺跟蹤命令,對搜索到的目標進行跟蹤,測量目標信號的重復周期,測定目標的距離,給出距離測量值的置信度。
  15. In this paper a maneuver target detection method based on acceleration compensation is proposed to solve the problem mentioned above. with the ability to refocus return target signal energy to a single doppler cell, this method can gain a better maneuver target detection ability

    針對上述問題本文提出了一種基於加速度補償的機動目標檢測方法,該方法能夠將目標回波能量重新聚集到一個多普勒分辨單元內。
  16. But when the steering vector errors are in existence, the target - signal cancellation is occurred

    然而,當存在指向矢量誤差時,會出現目標信號被消除的現象。
  17. Design of amplifying and converting circuit for coil target signal

    測速線圈靶信號放大與轉換電路
  18. Sigularity values of target contour and target signal are used to represent the invariant features of target

    利用目標輪廓和目標信號的radon變換奇異值作為目標的旋轉、平移不變特徵。
  19. Feature matching criterion based on sigularity values of target contour and target signal is given to identify target

    提出基於目標輪廓和目標信號的特徵匹配度量準則來對目標進行分類。
  20. Four white noises which have different cut off frequency were used as random control signal ( target signal ) in the simulation experiment. the results indicated that the correlation between the measured velocities and target signals decreased when the cut off frequency of the target signal increased. the correlation between the measured velocities and the target signals with cut off frequency of 0. 1 hz was 0. 85 ~ 0. 9

    在風洞中利用截斷頻率分別是0 . 1赫茲、 0 . 15赫茲、 0 . 2赫茲和0 . 4赫茲的水平譜原始信號進行模擬實驗,結果表明隨著原始信號的截斷頻率增大,實驗風速信號與原始信號的相關系數逐漸變小,當原始信號截斷頻率為0 . 1赫茲時,相關系數在0 . 85 0 . 9之間,而當截斷頻率為0 . 4赫茲時相關系數僅為0 . 3左右。
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