The application of signal detection theory in ships ' lookout at sea 信號(hào)檢測(cè)論在船舶了望中的應(yīng)用
Analysis on code switching from the perspective of signal detection theory 從信號(hào)察覺(jué)理論的角度分析語(yǔ)碼轉(zhuǎn)換
Signal detection theory 信號(hào)檢測(cè)論
The application of chaos theory to weak signal detection is a creationary research , which extends the application field of chaos theory and impels the development of weak signal detection theory 將混沌理論應(yīng)用于微弱信號(hào)檢測(cè)是一個(gè)開(kāi)創(chuàng)性的研究,它拓寬了混沌理論的應(yīng)用領(lǐng)域,將微弱信號(hào)檢測(cè)理論推進(jìn)了一大步。
Combining the basic laws of psychophysics and signal detection theory , we use two - alternative forced - choice ( 2afc ) to study the threshold change of human electric sense under different noise levels 在心理物理實(shí)驗(yàn)中,結(jié)合心理物理學(xué)和信號(hào)檢測(cè)論的基本原理,采用了二間隔的強(qiáng)迫選擇法( 2afc )作為實(shí)驗(yàn)方法,研究不同噪聲量級(jí)情況下人體電感覺(jué)閾值的變化。
With the development of signal processing techniques and fast algorithms , the signal detection theory got much progress . generally speaking , robust detection methods can be divided into two major branches , classical methods which are based on robust hypothesis testing and modern methods based on new signal processing methods 同時(shí)信號(hào)處理方法和計(jì)算機(jī)以及快速計(jì)算技術(shù)的快速發(fā)展大大豐富了信號(hào)檢測(cè)的手段,可以在原來(lái)理想模型的基礎(chǔ)上進(jìn)行魯棒化( robustification ) ,或者采用新的檢測(cè)方法。
Since the western countries began the srfcs research in the eighties , theory of signal detection is used in fdi , and it was successful in some fdi functions in several types of testing aircraft . china did the srfcs research recently , but lack of the engineering fdi algorithm . because the " model based signal detection algorithm " is sensitive to the matching accuracy of the mathematics model and aircraft has prominent nonlinear aerodynamic factors , it is difficulty to upgrade the ability of fdi based on the classical signal detection theory and data fusion only 國(guó)外自八十年代開(kāi)展自修復(fù)研究,一般采用基于常規(guī)數(shù)據(jù)處理的故障檢測(cè)理論來(lái)實(shí)現(xiàn)飛控系統(tǒng)故障檢測(cè)與隔離功能,現(xiàn)已在幾種驗(yàn)證機(jī)上取得初步成果,而國(guó)內(nèi)的研究尚缺乏實(shí)用的工程算法;同時(shí),基于常規(guī)數(shù)據(jù)處理的故障檢測(cè)精度對(duì)被檢測(cè)對(duì)象的數(shù)學(xué)模型匹配度敏感,且飛機(jī)的氣動(dòng)特性在故障情況下又具有較強(qiáng)的非線性特性,因此,單純依靠常規(guī)的信號(hào)處理算法難以進(jìn)一步提高故障檢測(cè)的精度。
This dissertation is focus on the temperature sensitive mechanism of the brillouin - scattering signal and on the basis of domestic techniques , the methods and approaches of signal detection and processing in distributed brillouin fiber - optical sensor system . a digital multi - point average method ( digital boxcar ) has been proposed based on the characteristics and the sorts of fiber - optical sensors and by analysis the feature of the brillouin - scattering signal , and also comparisons of all sorts of weak - signal detection theory 論文在全面了解光纖傳感器的分類和特點(diǎn)及分布式光纖傳感器的原理和發(fā)展歷程的基礎(chǔ)上,通過(guò)分析被檢測(cè)的光纖布里淵后向散射信號(hào)的特點(diǎn),研究和比較了微弱信號(hào)檢測(cè)的各種方法,最終選定了多點(diǎn)數(shù)字信號(hào)平均(數(shù)字boxcar )的處理方案。