properties of signals 中文意思是什麼
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Detailed work include : generalizing, analyzing, mathematically calculating, im - proving and estimating by experiments the 2d - doa estimation from the classical al - gorithm of 1 - d subspace. moreover, application and simulation of the properties of the cyclostationary of signals in parameter estimation within smart antennas area are studied as well
具體工作包括：經典一維子空間演算法推廣到二維中的分析，演算，改進，實驗模擬；以及信號平穩特性在智能天線參數估計中的應用和實驗模擬。 -
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。 -
A detection approach based on wavelet transform is proposed for these self - similar signals, which is obtained from the properties of the self - similar process after wavelet transform
利用自相似過程在小波分解下的特性，提出了基於小波變換的自相似信號檢測演算法。 -
This paper introduces the mwpc developed for the test on bepc, which localizes the particles of e, by center of gravity of the signals induced on the cathodes of the chamber, and describes its configuration, structure and the investigation of properties
摘要描述了bepc試驗束e 、描跡用的多絲正比室，陽極觸發陰極感應重心讀出，介紹了室結構、製造工藝和性能研究。 -
Analysis of filter properties and responses on two kinds of signals of piezoelectric vibrators
壓電振子的濾波特性及對兩種信號的響應分析 -
The work of this dissertation is focused on research of some key technics in signal design and processing of mcpc signal. the main content of the dissertation is summarized as follows : it gives a detailed description of the form of the mcpc waveform and its mathematical model, and analyses the formation and properties of phase coded sequence. it discusses the effect of signal parameters on autocorrelation, power spectra and ambiguity function in forms of single pulse and pulse train and compares different kinds of single pulse signals and pulse train signals
本文圍繞著多載波相位編碼信號在信號設計與信號處理的若干關鍵問題進行了研究，主要做了以下工作:描述了多載波相位編碼信號（ multicarrierphasecoded ，簡稱mcpc ）的信號形式，給出了其數學模型，對其中相位編碼序列的構成方式與特性進行了分析;從單脈沖和脈沖串兩種信號形式入手，對多載頻相位編碼信號的參數在自相關函數、功率譜密度和模糊方程上的影響作了詳細地討論，對不同調制方式的單脈沖和脈沖串信號進行了比較。 -
In this paper, we propose an adaptive wavelet transform which possess the properties of translation and scale invariance. firstly, the original signal is adaptively renormalized using a scale function of an orthonomal wavelet and the first two moments of the signal. then, we decompose the renomalized signal according to the conventional discrete wavelet transform. as we prove, this adaptive wavelet transform is translation - and scale - invariant, and an efficient algorithm for calculating these wavelet coefficients, called adaptive wavelet invariant moments, is proposed. finally, we give experiment results for 2 - dimension digital signals ( images ) to verify our conclusion
本文提出了一種具有平移和尺度不變性的自適應小波分解新方法，該方法利用信號的一階、二階矩及正交小波尺度函數，先對信號進行自適應小波「重整」 .然後再對重整后的信號進行普通小波變換.本文證明這種自適應小波變換是平移和尺度不變的，並給出了計算自適應小波變換系數（稱為小波不變矩）的一種有效演算法.對二維數字信號（圖像）的實驗證實了我們的結論 -
First, the overall design of frequency hopping frequency synthesizer ( fhfs ) is given. the characteristics of this approach are discussed and the corresponding key technologies are also briefly introduced. then, the specific frequency properties of dds output signals and their effect on fh signals are carefully analyzed
論文首先介紹了跳頻頻率合成器的整體設計方案，分析了這種方案的特點，並對其中的關鍵技術進行了簡要的闡述；接著，分析了dds輸出信號的頻譜特性以及這些特性對跳頻信號的影響。 -
By studying the discrete fourier transform properties of the band - limited digital signal, the authors introduce alternating projection neural networks into the paper, expand apnn ' s application scope from real field to complex field, and present several important conclusions on apnn. analyzing and discussing network ' s tolerance to noise, convergence rate and the spectral leakage problem of the truncated signal expected to be extrapolated by using these conclusions, the paper presents an extrapolation algorithm for band - limited signals based on alternating projection neural networks. a lot of simulation experiments show that the algorithm is effective. in addition, the algorithm is also effective to spectrum extrapolation. owing to adopting network structure, the algorithm is prone to parallel computation and vlsi design, and consequently can satisfy real time military processing needs
本文通過對頻帶受限數字信號的離散傅立葉變換特性的研究，引進了交替投影神經網路，並將其應用范圍從實數域拓廣到復數域，且給出了在復數域仍然成立的若干結論.運用這些結論，在對網路噪聲抑制、網路收斂速度及待外推信號因截斷而造成頻譜嚴重外泄問題的分析與討論的基礎上，提出了一種基於交替投影神經網路的外推演算法.模擬實驗表明該方法是行之有效的.另外，該演算法對頻譜外推同樣適用；由於它採用全互連神經網路結構，易於并行計算和vlsi實現，從而可滿足軍事上實時處理的需要 -
The parameters adjustment of injection molding process is important to its resulting substrate quality including its mechanical, optical properties and its electrical signals
光盤基片的注塑成型過程和質量對光盤成品的品質包括外觀、機械特性、光學特性及電氣特性都有及其重要的影響，是光盤復制生產中最重要的一環。 -
Due to the specialties of fault signals in missile fault diagnosis, we proposed a novel de - noising method applying wavelet analysis scale space filter by using the properties of the signal and noise modulus maxima across scales. and modified it by using information on neighboring coefficients into the decision making. this de - noising method can reduce noise to a high degree while preserving most of the important features of the signal such as edges and other singularities
研究了小波理論在信號去噪方面的理論和演算法，並針對故障信號的特殊性，提出了基於小波變換模極大值理論的尺度相關信號去噪方法，並提出了改進方法，將臨近系數的信息也作為決策的依據，從而得到了既能保護信號的奇異性特徵，又可以取得較好信噪比的新的信號去噪方法，並將其應用於實際系統，取得了很好的效果。 -
For real world implementation of wavelet theory, the selection of suitable wavelet bases and related algorithms is mainly focused on. then the application in signal de - noising with wavelet transform is investigated. due to the specialties of fault signals in motor control system fault diagnosis, a novel de - noising method applying wavelet analysis scale space filter by using the properties of the signal and noise modulus maxima across scales is proposed
研究了小波理論在信號去噪方面的理論和演算法，並針對電機控制系統故障信號的特殊性，提出了基於小波變換模極大值理論的尺度相關信號去噪方法，並提出了改進方法，從而得到了既能保護信號的奇異性特徵，又可以取得較好信噪比的信號去噪方法，並將其應用於實際系統，取得了很好的效果。 -
Results of computer simulations prove that the mud has higher sinr value, effective mai cancellation, better near - far resistance capability than decorrelating mud. so it ' s feasible and reasonable. simulation results also show that the lms algorithm can exactly converge to stationary value, works well on ber properties and adaptively detects the users " signals
實驗模擬表明穩態時這種結構的檢測器可獲得高於解相關檢測器的信號干擾比，能夠有效地抑制多址干擾，具有良好的抗遠近效應能力；採用lms自適應演算法時能夠準確收斂到穩態解上，較好的實現自適應檢測。 -
The main innovations embodied in this method are the introduction of the intrinsic mode functions based on local properties of signals, which make the instantaneous frequency meaningful
局域波分析方法的重大突破就是用基於信號局部特徵的多個基本模式分量來描述信號的特徵，並賦予了每個基本模式分量具有實際物理意義的瞬時頻率。 -
The wavelet classical theory is used to discuss the behavior properties of share price signals. we show that there are the properties of self - similarity, periodical, and long - term trend in these signals
本文利用小波分析經典理論研究了股價信號行為特徵，發現股價信號具有自相似性、擬周期性，和某種長期趨勢性。 -
We systematically analyze different types of random ppm - ps signals, including single random ppm - ps signals, compound ps ( cps ) signals of the random ppm - ps and random binary coded pulse, and chaotic sequence - based ppm - ps signals. we give their definitions and mathematical representations, derive their spectra and ambiguity functions, plot the ambiguity figures and cuts, and analyze their correlation properties and other performances
系統地分析了單一隨機脈位調制脈沖串和隨機脈位調制與隨機二相碼調相復合脈沖串隨機脈位調制脈沖串信號；內容包括它們的定義、數學描述方法、模糊函數的推導與計算、模糊圖的繪制和切割、相關特性及性能。 -
We systematically analyze different types of uniform ppm - ps signals, including inter - pulse quasi - random binary coded ps signals, pulse - family quasi - random binary coded ps signals and pulse - family random binary coded ps signals. we give their definitions and mathematical representations, derive their spectra and ambiguity functions, plot the ambiguity figures and cut, and analyze their correlation properties and other performances
系統地分析了脈間偽隨機二相碼脈沖串、脈組偽隨機二相碼脈沖串和脈組隨機二相碼脈沖串均勻脈位調制脈沖串信號；內容包括它們的定義、數學描述方法、頻譜和模糊函數的推導與計算、模糊圖的繪制和切割、相關特性及性能。
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