相位模 的英文怎麼說
中文拼音 [xiāngwèimó]
相位模
英文
phase mode-
Through the detailed analysis of the aaf, the defection of using chirp - fourier transform in guidance radar signal processing is pointed out
通過對加速度模糊函數的形態分析也指明了針對線性調頻信號的二次相位匹配處理（ chirp - fourier變換）在應用到制導雷達信號處理中所存在的缺陷。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。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。Analysis the cause of channel disaccord of gain and phase, give four methods of gain and phase calibration, computer simulation illustrate the that the methods are effective. in the chapter 4, the basic relation of phase interferometer of one dimension, two dimensions, and the measurement accuracy and the approach of solving the phase ambiguity in the phase interferometers have been discussed in detail
第四章對相位干涉儀進行了較為詳細和系統的研究，給出一維相位干涉儀的基本關系式，分析了五通道相位干涉儀測向定位演算法及其性能指標，對解相位模糊問題進行了探討，在ccss中模擬了測向演算法，模擬結果證明了演算法的正確性。The main work of the first part includes : introducing some methods of underwater sound positioning and analyzing their performance, analyzing the theory of measuring direction and distance of the target by three elements symmetrical and dissymmetrical array, comparing the measuring error of two kinds of array, and giving the theory of the generic arrays and discussing the phase wrapping and the distance wrapping in passive ranging
對被動測距技術的研究工作主要包括：簡單介紹了水聲定位的幾種方法，並對其性能進行了分析對比，分析了三元對稱陣和非對稱陣測向測距的原理，對兩種陣型的測向測距誤差進行了對比分析，還給出了一般陣型測向測距原理，最後還對被動測向測距中存在的相位模糊和距離模糊問題進行了探討。For the anticounterfeiting of printings ( such as certificate ), the existent many ways ( such as rainbow holograms ) are not available as the need for special use : anti - distortion and anti - copy. basing in the double - random - phase transform, this article puts forward a new way that two - dimensional bar code is used as anticounterfeiting label with anti - printing ? scanning and anti - damage properties. the major job are : ( 1 ). basing in the ascii codes, numerals and alphabets are encoded and subsequently transformed into two - value bar code matrix figure. later, using amplitude - based double - random - phase transform, the enciphered gray scale figure is formed. by computer simulation ( 4f system ) and printing as well as scanning ( 20 times ), we get the result that the gray scale figure with little miscoding rate ( 0. 0026 ) by “ matrix expanding way ”
本文主要開展了以下三項研究工作: （ 1 ） .用自定義編碼方案，將數字和字母（ ascii碼）轉換成二值條碼圖;對該圖形進行振幅型雙隨機相位加密變換，得到原信息的加密灰度圖;通過4f光學系統計算機模擬和列印-掃描實驗，證明本文提出的「矩陣擴展法」灰度圖具有較小的誤碼率，對於20次列印-掃描實驗，誤碼率不大於0 . 0026 。Chapter 3 discusses the modules used in the fh - mpsk and fh - / 4dqpsk systems. these modules include : duc / ddc ( digital up converter / digital down converter ), nyquist flitter, burst start detection, interpolation module, pll ( phase locked loop ), pll error extraction, initial phase correction and the coding and decoding for tcm
第三章主要討論了跳頻模式下fh - mpsk和fh - 4dqpsk系統中各個模塊的設計，這些模塊包括：上下變頻器、奈奎斯特濾波器、信號到達檢測、插值模塊、通用環路、各環路誤差提取方法、初始相位校正和tcm編譯碼。An efficient technique to facilitate gps single frequency phase ambiguity resolution
相位模糊度解算方法We rederive the eqpm, however, with the potential field description of the effective quantum spin modeled from weakly linked two - component becs
我們用等效量子自旋模型的勢場描述方法得到了弱耦合雙組分bec精確量子相位模型（ eqpm ） 。Range ambiguities and phase wrapping are the two main problems during acoustic ranging, direction finding, tracking and positioning. we mainly discuss range ambiguities
距離模糊和相位模糊是水聲測距、測向、跟蹤定位中的兩大模糊問題，抗距離模糊是本文研究的主要內容。This thesis first studied the communication system with detailed theories so that to choose the appropriate method of modulation and demodulation. n / 4dqpsk is a kind of modulation method which is appropriate to transfer in the attenuated channel
/ 4dqpsk是一種比較適合在衰落通道中傳輸的調制方式，它不需要提取相干載波，因而不存在相位模糊、環路跳周等問題。In order to encode the parameters of sinusoidal model, the vector quantization techniques for amplitude parameters and the differential quantization for frequency parameters are proposed and discussed. at the same time, the frequency bin model, the random phase model and the zero phase model are also discussed
針對正弦模型參數的量化編碼，提出了幅度參數矢量量化、頻率參數差分量化等方法，並探討了頻率盒量化模型以及隨機相位和零相位模型等。Following this, the thesis research digital demodulation of qpsk and analyze the digitalizing means of key module. digitalizing demodulation arithmetic is given. the thesis also researched in phase ambiguity of coherent demodulation, and then brings forward a new method for settling phase ambiguity
而後研究了qpsk的數字化解調，分析了關鍵模塊的數字化方法，給出了數字化解調演算法，並研究了相干解調中的相位模糊問題，提出了一種解決相位模糊的新方法。3. the methods to improve and enhance the performance parameters of frequency synthesizer, such as phase noise and frequency stability, are discussed detailly and deeply through the linear phase model of pll which is using to implement the
3 .利用鎖相環路的線性相位模型，詳細討論了利用鎖相環進行頻率合成時，頻率合成器的主要性能參數如相位噪聲和頻率穩定度的改進方法。In this paper, measurement techniques of both rigidity and soft medium materials have been systemic researched. corresponding measurement has been proposed and many problems on dielectric materials ’ measurement, such as phase shift ambiguity problem, instability problem and so on, have been solved
本文對剛性介質材料和柔性介質材料的測試技術進行了系統的研究，提出了相應的測試方法，解決了介質材料測試的諸多問題，如相位模糊性問題、不穩定性問題等。Then presented the basic structure, phase model, frequency response and performance analysis for noise and spur, of phase locked loop ( pll )
然後介紹了鎖相環（ pll ）的基本結構、相位模型、頻率響應、噪聲及雜散性能。The new system uses short base - line to avoid the long base - line phase illegibility to get the signal arrive angle with higher precision, then use the phase differences without illegibility and the arriving angle to detected the emitter ' s range
該系統首先通過短基線測角，去除長基線接收機相位模糊，進而獲得更高精度的波達角度；然後通過無模糊的相位差側量值和波達角度估計值確定信號源與觀測站之間的距離。Abstract : in this paper, a variety of encryption methods for optical image security are comparatively studied. according to the different method, the encrypted image can be transformed into white or color noise. the encryption phase can be the random phase or the chaotic sequence as well as the calculated result by used of the phase retrieval algorithm. the image quality and the correlative recognition ability of decrypted image are affected by the different part of the decryption phase and the amount of high frequency or low frequency used in the process of decryption
文摘:本文分析比較了多種實現光學圖象相位加密的方法，發現不同方法獲得的加密圖象有不同類型的噪音分佈.無論加密相位是隨機相位模板、渾沌序列的相位列陣，還是用相位重構迭代演算法計算的結果，它們都能起到加密圖象的功能.解密圖象的質量或被相關識別的能力與解密過程中所使用正確解密相位的不同部分以及高低頻分量多少有關，且其依賴程度是由不同的加密方法自身決定Firstly the fringe is subdivided properly, then we get the estimated phase in subdivided regions based on the wavelet method and minimum mean errors estimates method
首先對干涉圖象進行適當的分塊，然後通過線性相位模型對每個子塊的相位進行擬合；擬合系數通過干涉圖象分塊的小波變換與最小均方誤差估計方法獲得。2. we design a novel multi - phase fuzzy traffic control arithmetic for single intersection
2 ）設計了一種針對單交叉口的新的多相位模糊交通控制演算法。分享友人