detection of a target 中文意思是什麼

detection of a target 解釋
探測目標
  • detection : n. 1. 探知；發現，發覺；敗露。2. 【化學】檢定，檢查；【電訊】檢波。
  • of : OF ＝Old French 古法語。
  • a : an 用在以母音音素開始的詞前〉 indefinite art 1 〈普通可數名詞第一次提到時，冠以不定冠詞主要表示類...
  • 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；...
  1. A new fractal - based infrared image feature extraction method is presented and the detailed theoretic analysis and implement procedure of this algorithm is submitted and tested in some experiments. with the limitation of the line detection based on traditional hough transform that the information of the length and the end points of the line is unavailable, a new algorithm which makes use of the accessional strategy based on precognition information is put forward to meet the demand for more information of the line, simulation results show this method is effective. finally, the whole process of airport target recognition is presented and the result images are also given

    使用分形方法提取目標的特徵，在知識指導下，提出了一種基於目標特徵模型的降維的形態學分形維數計算方法，對傳統分形方法進行了改進，從理論上推證了演算法的合理性，並對演算法進行了模擬分析；針對傳統hough變換無法獲得線段端點和長度信息的局限性，提出了一種基於目標特徵先驗知識的hough變換融合策略，通過引入目標先驗知識，可以有效地獲得直線信息；對信息多而復雜的機場目標採用基於知識的目標識別方法，使用置信度模摘要型實現不確定推理，對目標進行識別判斷，將知識貫穿于整個識別過程中，對目標進行了有效地識別。
  2. Fusion protein expression system can overcome those problem, increased the yield of yield of recombinant protein in e. coli. this remarkable increase in protein yield was thought to be due to protection of the target protein from proteolysis, improved folding, and efficient mrna translation. fusion protein also make the detection and purification easy, is a good strategies for achieving high - level expression of genes in escherichia coli

    小分子量異源蛋自在人腸桿菌的表達受mrna不穩定、翻譯起始效率低、易被蛋自酶降解等因素的干擾，較難獲得高效表達，通過與已高表達的蛋自融合表達可以克服以上問題，可以使大多數蛋白獲得高效表達。
  3. In the multitudinous intrusion event, the hacker often gain control of the target computer through exploiting essential system process, and leaves trojan horse or back door in the system after a successful intrusion, which provides a shortcut for next access. therefore the process detection for the exploited system process and the trojan horse is important topics in the intrusion detection field

    在眾多的入侵事件中，黑客往往通過感染關鍵系統進程獲得目標主機的系統權限，並在成功入侵后在目標主機留下木馬、后門作為下次入侵的捷徑，所以對這些受感染的系統進程以及木馬、后門進程進行檢測是入侵檢測技術研究的重要課題之一。
  4. The state - of - the - art of the study of ship and ship wake detection is summarized. the target types of the ship and its wake in different resolution sar images are analyzed and a conclusion is draw. the issue of ship target detection to the low or middle resolution sar image is point target detection while the issue to the high - resolution sar image is hard target detection

    本文在文獻綜述的基礎上，全面分析了sar圖像艦船目標及其尾跡檢測的研究現狀，通過應用sar圖像理解的基本理論，分析了不同解析度圖像中艦船目標及其尾跡的類型，並得出結論：中低解析度sar圖像中的艦船目標檢測是點目標檢測；高解析度sar圖像中的艦船目標檢測是硬目標檢測； sar圖像艦船尾跡檢測是線性目標檢測。
  5. To tackle the problem of psychotropic drug abuse among juveniles, undercover detectives were sent to rave parties for covert surveillance on target persons, resulting in the successful detection of a number of cases of trafficking in dangerous drugs

    為對付區內青少年濫用精神藥物的問題，東九龍總區先後派遣臥底探員深入狂野派對暗中監視目標人物，並成功偵破多宗販賣毒品的案件。
  6. Take integrity of object information into condition, a two - dimension signal processing method which can make a measurement of the target ’ s speed as well as the range is brought forward at the basis of waveform parameter design. and simulation in the background of hf multi - object with noise is taken. a comparison of signal properties, processing and antinoise detection performance is taken between mcpc and another two high range resolution radar signals : single carrier pulse coded signal and step frequency pulse coded signal

    考慮到目標信息提取的相對完整性，以高頻雷達為背景，在對多載波相位編碼脈沖串信號參數設計的基礎上，推導了三種多載頻相位編碼脈沖串信號的距離速度二維處理過程並相應的對多目標噪聲環境進行了模擬;將多載波相位編碼信號與另外兩種距離高分辨信號:單載頻相位編碼信號和相位編碼階梯跳頻信號，在信號特性、處理過程和抗噪聲特性方面進行了對比;本文從理論上為多載波相位編碼信號的波形設計和分析、信號的處理打下基礎。
  7. Atmospheric attenuation of scene contrast is studied theoretically on the basis of radiometric principles, and the relationships between the measured maximal detection range for a target and visibility distance under two possible conditions are obtained

    根據輻射度學原理，從理論上研究景物對比度在大氣傳輸中的衰減，得到了在兩種可能的條件下所測得的目標最大探測距離與能見距離的關系。
  8. An algorithm for detecting moving ir point target in complex background is proposed, which is based on the reverse phase feature of neighborhood ( rpfn ) of target in difference between neighbor frame images that two positions of the target in the difference image are near and the gray values of them are close to in absolute value but with inverse sign. firstly, pairs of points with rpfn are detected in the difference image between neighbor frame images, with which a virtual vector graph is made, and then the moving point target can be detected by the vectors ' sequence cumulated in vector graphs. in addition, a theorem for the convergence of detection of target contrail by this algorithm is given and proved so as to afford a solid guarantee for practical applications of the algorithm proposed in this paper. finally, some simulation results with 1000 frames from 10 typical images in complex background show that moving point targets with snr not lower than 1. 5 can be detected effectively

    基於運動點目標在鄰幀差分圖像中所具有的近鄰反相特徵，即運動點目標的兩個位置相鄰近、灰度值一正一負，提出一種在復雜背景下，基於紅外序列圖像的運動點目標檢測演算法.本演算法利用該特徵在鄰幀差分圖像中檢測反相點對，進而構造反相點對矢量圖，最後依據累積反相點對矢量圖中多矢量首位相接的連續性檢測出運動的點目標.文中給出並證明應用本演算法能以概率1檢測到運動點目標的收斂性定理.對典型復雜背景下10幅1000幀圖像的模擬結果表明，當信噪比大於或等於1 . 5時，可以有效檢測出運動點目標
  9. Firstly, the characteristics of radiation propagation and attenuation in the atmosphere, and the power response of a contrast - limited optoelectic system are analyzed, the apparent contrast model of a target is developed, and the detection range equation dependent on the aerosol extinction coefficient and range parameter are derived

    首先，分析了紅外波段大氣輻射傳輸與衰減、對比度限制光電成像系統功率響應特性，建立了目標表現觀對比度模型，並推導出了由氣溶膠消光系數和距離參量確定的探測距離方程。
  10. At last, this paper put forward a recognition method using the parameter of moving target the missle - borne pulsed doppler radar can be achived and the hmm and the analized the limited performance of the method under different circumstance. in chaper 4, this paper analized the temporal chracreristic and spectral chracterisc of hovering helicopter, and then analized the possible methods for detection hovering helicopter and the message that can be achived

    第四章中，本文首先分析了懸停直升機回波信號的時域特性和頻域特性，結合彈載高重頻脈沖多普勒雷達的一些具體參數分析了利用彈載高重頻脈沖多普勒雷達對懸停直升機進行檢測的可能途徑和可利用信息。
  11. Aiming at the restrictions of fft methods, this paper put forward a transform naming changing scale discrete chirp - fourier transform and applied it to detecting accelaration target using missle - borne high - prf pulsed doppler radar, at last this paper put forward a new sequential detection method. in the third part of this paper, aiming at the different characteristic of the extended target spectrum, this paper discussed the detecting and precised measuring the extended spectrum of the target

    針對傳統fft對加速目標進行積累檢測時的局限性，提出了一種變尺度離散chirp ? fourier變換並將其應用於彈載高重頻脈沖多普勒體制雷達對加速運動目標的檢測背景中，提出了一種對加速運動目標的序貫檢測演算法。
  12. At last, in the circumstances of a wide - band radar is used for target detection, the length of received signal is much longer than that of the transmitted pulse signal. because the traditional matched filter collects only a small part of the energy of received signal, it is not good for detection. the generalized matched filter is obtained by improving the traditional matched filter and can collect all energy of received signal, which is good for detection

    最後，在寬帶條件下，雷達發射脈沖信號，雷達的目標回波的時間長度要遠遠大於發射信號的時間長度，傳統的匹配濾波只能收集一部分回波信號的能量，這對于檢測電磁散射比較弱的目標是不利的，而廣義匹配濾波對傳統的匹配濾波進行改進，可以將目標回波的全部能量收集起來以提高檢測性能。
  13. 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。
  14. Psr is a radio detection equipment that provides information on range and bearing of aircraft in the form of a target blip on the radar screen to air traffic controllers by transmitting radar pulses and detecting the reflected signals from the aircraft. no active transponder or avionics on board aircraft has to be relied on

    監察雷達發出雷達脈沖，偵測從飛機反射回來的信號，便可計算飛機的距離及方位，並以目標點在雷達屏向航空交通管制員顯示，而不須依靠航機上的應答機或其他航空器材。
  15. In this paper, we study a new method of automatic detection of target course - altering maneuvers based on a linear measurable function of bearings varying with time when the target travels on a straight line at a constant speed

    摘要根據觀測器目標保持勻速直線運動時目標方位隨時間線性變化的一種可量測函數，研究了一種檢測目標轉向機動的新方法。
  16. Information fusion consists of a collection of subdisciplines, such as mathematics, military affairs, computer science, autocontrol theory, artifical intelligence, communications technology, manage science. information fusion has been applied to many research fields, such as robot and intelligent instrument system, battlefield mission, pilotless aircraft, image analysis and understanding, target tracker and detection, multiplesource image reconstruction, and so on

    信息融合技術最早用於軍事領域，現已成功地應用於包括機器人和智能儀器系統、戰場任務與無人駕駛飛機、圖像分析與理解、目標檢測與跟蹤、自動目標識別和多源圖像復合等眾多研究領域。
  17. Magnetic anomaly detection is a kind of magnetic technology of target - detection. it is developed with the progress of magnetic sensors, which is based on the phenomena that ferrous objects disturbs the magnetic lines of force of the earth. so we can gain the neccesary informatin of the target through processing the data of the magnetic anomaly signatures. this technology has a wide perspective in the future. this paper will study the technoly of mad through a lot of experiment. the platform for the experiment is made

    本論文通過大量實驗對磁異信號目標探測技術進行了研究，研製了磁異信號目標探測技術試驗平臺，利用amr磁阻傳感器開發了提取磁異信號特徵量?磁梯度計，並基於磁場梯度計通過實驗對模擬磁性目標的磁異常場的分佈進行了研究，用圖示法將其分佈特徵表現出來，發現了磁異信號測量的最佳角度，並給出了理論分析和結論。
  18. If the target has a radial acceleration, conventional 2d - fft based data processing method will lead to a doppler spread in doppler domain. the high resolution of doppler domain due to coherent integration no longer holds, which is very important in target detection of othr

    常規的二維fft處理在處理機動目標時往往由於目標存在徑向加速度而會在多普勒域造成多普勒擴展，從而無法應用相干積累帶來的多普勒域的高分辨力完成對目標的檢測。
  19. The last target detection technology discussed in the dissertation based on a single frame greatly improves the fast target discovering ability of the system, and indicates the location of the target as well

    論文研究了單幀亞圖像快速目標檢測技術，該技術能大大提高系統快速發現目標的能力，給出目標方位。
  20. The method in this paper will supply an algorithm gist and a reference for the signal processing in the detection of underground target

    所述的演算法分析、小波基的選擇及小波變換階的選擇等，為地下目標探測中的信號處理，提供了演算法依據和應用方法參考。
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