虛警率 的英文怎麼說

中文拼音 [xūjǐnglǜ]
虛警率 英文
false alarm rate
  • 虛 : Ⅰ名詞1 （空虛） void; emptiness 2 （政治思想等方面的道理） guiding principles; theory 3 （二十八...
  • 警 : Ⅰ動詞1 （戒備） guard against; garrison 2 （使人注意） warn; alarm Ⅱ形容詞（感覺敏銳） alert; vig...
  • 率 : 率名詞（比值） rate; ratio; proportion
  1. The characters of this device were high sensitivity, wide - angle warning resign, accurate azimuth angle of the coming laser and low wrong - warning rate

    此激光預警器的特點是靈敏度高、視場寬、測向精度高，且虛警率極低。
  2. The synchronization of frequency hopping method referenced the jtrs radio system of usa military, and designed a synchronization method used in our radio include creating the frequency hopping map and the base band frame architecture in frequency hopping mode. the paper also analyzed the synchronization capability on theory. it has been proved correct on theory by showing the false probability, capture probability and the synchronization time

    對跳頻圖案的產生和跳頻的幀結構，本文不僅從理論上分析了同步性能，給出了虛警概率和檢測概率，估算了同步的捕獲時間，證明均能滿足系統指標要求，而且通過與合作單位進行的整機聯調和實測證實了該方案的可行性。
  3. False alarm probability

    虛警概率
  4. This method utilizes the distribution property of image intensity. given the false alarm probability, the threshold for likelihood difference can be determined

    該方法利用sar圖像的強度分佈特性，根據虛警率確定相鄰區域之間存在邊界的似然差函數的閾值。
  5. We mainly discuss the methods of gmti, location, and the measure of velocity, the decrease of false alarm probability and the compensation for phase error

    主要研究mcarm數據動目標的檢測、定位和測速的方法，利用定位和測速信息進一步降低虛警概率的方法和相位誤差補償方法。
  6. The high false alarm rate is the main problem which puzzles the research and application of the bit technology

    虛警率較高始終是困擾bit技術研究和應用的主要問題之一。
  7. First, we propose a kind of constant false alarm rate ( cfar ) target detector to find potential targets from scenario

    利用恆定虛警率（ cfar ）檢測運算元，從場景中發現潛在目標。
  8. The concrete forms of cfar algorithm for different clutter distributions are deduced particularly. it concludes the relationship between the detection threshold and the false alarm rate and the estimation of the clutter statistic measure, and so on

    詳細推導了不同分佈下cfar演算法的具體形式，包括檢測閾值與虛警率的關系，雜波統計量的估計等內容。
  9. The reasons and mechanism of how the feature information quality influences the bit performance are analyzed systematically. in order to analyze how the feature level influence the bit performance, the factors that induce the feature information quality are analyzed first, and the mechanisms of feature level influencing fa are investigated. the quantitative analysis and simulation results show feature irrelevancy to fault condition, feature redundancy and feature unmatched to fault classifier is the cause of false alarm

    本文的主要研究內容與結論如下: 1 .深入研究了機電系統bit特徵層導致虛警的原因和機理對特徵層的特徵信息質量包含的內容進行了分析，得到特徵與故障不匹配、特徵冗餘和特徵與決策器不匹配三種信息質量較差是特徵層導致機電系統bit虛警率高的主要原因。
  10. In this thesis, first, we present the theory of sess system, the generation of the sess spreading code and its characteristics and the acquisition theory of conventional spread spectrum communication system. an efficient acquisition scheme based on periodically transmitting the synchronization head, which is composed of binary chaotic codes, using the matched filter and automatic decision threshold - level control based on a so - called constant false alarm criterion for sess system is present. the acquisition model of sess system is built and simulated in the awgn channel, the raleigh fading channel and imulti - address interfere condition

    本文首先概述了自編碼擴頻通信的原理、自編碼擴頻序列的產生方法及其特性和擴頻通信系統編碼同步的理論，然後針對自編碼擴頻通信系統提出了擴頻序列捕獲方案:周期性地加入混沌序列同步碼，並採用恆虛警率匹配濾波器捕獲法;在加性白高斯噪聲通道、瑞利衰落通道和多址干擾情況下進行了模擬，分析了各種捕獲性能:在選擇性能最優的混沌序列、適當的序列長度、虛警概率及門限值的情況下，可以獲得較短的捕獲時間和較大的捕獲概率。
  11. 5 a multi - thread software cooperated with smp ( 2 cpu ) hardware performs the image - preprocessing correlation and post - processing synchronously, thus an automatic working module is realized. 6 systematic designed software, including grabing sarnies constructing rfl diging roi, and trainning ann offline and inline modules, has passed the practical tests which indicates that the opr could reach the recogniton possibility above 85 % and decrease the false alarm in the environment of high noise low contrast and multi - objects. and these are proved stable and repeatable in statistics, and so an advanced progress toward practical systems is achieved

    6 、系統化設計的軟體，包括了樣本採集、參考濾波器庫構成、相關平面的roi採集，以及ann脫機訓練、 ann聯機運行的軟體功能模塊，在實時運行的測試結果中表明了該opr系統對處于高噪聲、低反差、多目標的惡劣條件下，對三維畸變目標的判識率（ > 85 % ） ，降低了虛警率，並通過大量的實驗數據證明了該系統各項指標的穩定性和可重復性（從統計意義上講） ，向實用系統邁進了一大步。
  12. A new conclusion in ca - cfar detection

    單元平均恆虛警率檢測中的一個新結論
  13. Cfar target detection in sar imagery

    合成孔徑雷達圖像的恆虛警率目標檢測
  14. Due to energy spread of return target signals between doppler cells, both false alarms and missed alarms increased

    機動目標回波能量在多普勒單元間的擴展還會導致弱目標的漏檢和虛警率的提高。
  15. For this reason, researchers of varies nations court for the opr application with the feature of real - time freedom high recognition possibility and low false alarm

    因此世界各國競相研製實時、靈活、高判識率、低虛警率的實用系統。
  16. Secondly, we systematically study the cfar target detection algorithm with the guide of the conclusion gained from the research of the clutter statistical models

    其次，在研究雜波統計模型得到的結論的指導下，系統研究了恆虛警率（ cfar ）目標檢測演算法。
  17. ( 3 ) cfar method : according to earth clutter ' s character, i adopt cell average constant false alert rate ( ca - cfar ) and biparameter cfar under the consideration of sea clutter character

    （ 3 ） cfar方法：針對地雜波的特點，採用了單元平均恆虛警率（ ca ? cfar ）的方法。針對海雜波的特點，採用了雙參數cfar演算法。
  18. Built - in test ( bit ) technique is an important approach to improve testability and diagnostic capability of equipments and devices greatly. the domain of bit application has extended from electronic equipments to mechantronic equipments. however, the high false alarm rate ( far ) is one of the important factors that prevent bit from being more extensively applied

    機內測試（ built - intest ， bit ）技術在提高武器裝備和機電系統的測試性、簡化維修過程和降低保障費用等方面發揮了重要作用，但虛警率高的問題一直阻礙著bit效能的充分發揮和更廣泛、更深入的應用。
  19. It combines the real echoes with the date simulated using the real airborne sar system parameters to analyze and validate the method. after the combined data are filtered, the improved greatest of cell - average constant - false - alarm - rate ( go - ca - cfar ) is used to judge whether moving target is detected or not. in the following, real moving target is detected and its velocity and position is gained through which it is focused well

    將接收的實際場景數據與實際系統參數下模擬的典型數據相結合，分析、驗證了頻域濾波法的性能，並對濾波后的數據採用改進的選大單元平均恆虛警率（ go - ca - cfar ）方法進行處理，判斷動目標是否存在；然後對實際的動目標進行檢測，準確的估計出目標速度及位置並對目標重新聚焦成像，接下來將聚焦的動目標圖像和常規sar圖像迭加，同時得到了回到真實位置的動目標聚焦圖像和實際場景sar圖像。
  20. Based on the model of safe following distance, the recognition theory of the minatory objects is put forward and the model of potential menace is established, which afford a theoretic base in order to decrease the nuisance alarms and enhance the reliability of the system

    本文在安全跟車模型的基礎上，提出了目標物有效性識別理論，並建立了潛在威脅目標的判別模型，為減少系統的虛警率、提高系統的可靠性提供了理論支持。
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