discrete fourier transforms造句
例句與造句
- On frequency resolution of the windowed discrete fourier transform
加窗離散傅里葉變換測(cè)頻分辨率研究 - Dft for discrete fourier transform
離散傅里葉變換 - 2 . an algorithm resistant to print / scan process is proposed , which is based on block discrete fourier transform
2 .提出一種基于分塊離散傅立葉變換的抗打印-掃描圖像水印算法。 - Discrete fourier transform is a vital means of signal analysis . it transforms the in - time signal into the in - frequency signal
離散傅立葉變換是信號(hào)分析中的一種重要手段，它將時(shí)域信號(hào)轉(zhuǎn)換違頻域信號(hào)。 - According to the theory of digital signal processing , discrete fourier transform has selectivity to frequency just as spectrum analyzer
根據(jù)數(shù)字信號(hào)處理理論，離散傅里葉變換( dft )算法對(duì)頻率具有選擇性，有相當(dāng)于頻譜儀的功能。 - It's difficult to find discrete fourier transforms in a sentence. 用discrete fourier transforms造句挺難的
- A new data compression technique , called the threshold discrete fourier transform ( tdft ) method , is proposed to efficiently compress the scattered field data from complex targets
提出了閾值dft ( tdft )算法用于實(shí)現(xiàn)基于雷達(dá)目標(biāo)強(qiáng)散射中心分布的rcs數(shù)據(jù)壓縮。 - The discrete fourier transform algorithm can analyze time - domain ' s stationary disturbance signal effectively and confirm the signal ' s distributing in the frequency domain
而離散傅立葉變換則可有效地對(duì)穩(wěn)態(tài)擾動(dòng)進(jìn)行分析，得出時(shí)域穩(wěn)態(tài)信號(hào)在頻域中的分布情況。 - A novel class of layered feedforward neural network models for function approximation was proposed based on the principle of multi - dimensional discrete fourier transform
摘要利用多維離散傅立葉變換原理構(gòu)造新穎的神經(jīng)網(wǎng)絡(luò)模型用于函數(shù)逼近，網(wǎng)絡(luò)結(jié)構(gòu)為分層前向網(wǎng)絡(luò)。 - The dft ( discrete fourier transform ) method is use to demodulate the gap length of the low finesse fabry - perot sensor . 3 . the accuracy of the results of dft algorithm is analyzed
針對(duì)實(shí)際光強(qiáng)信號(hào)在波長域均勻采樣，而在頻率域非均勻采樣的特點(diǎn)，討論了傅立葉變換的變形? ?離散腔長變換( dgt )算法。 - In chapter 3 , the paper presents the theory of wigner - ville distribution ( wvd ) , pseudo wvd , smoothed pseudo wvd , discrete fourier transform ( dft ) , fast fourier transforms ( fft ) , and also expatiates on the
第三章將對(duì)wvd 、 pwvd 、 spwvd分布、 dft和fft變換的理論進(jìn)行說明,并闡述跳頻解跳與數(shù)字中頻接收機(jī)的解跳原理。 - Moreover , the signal processing method of high range resolution based on inverse discrete fourier transform is analyzed . the synthetic high range resolution of the several scatters is simulated
此外,本文還闡述了頻率步進(jìn)信號(hào)的逆傅立葉變換合成距離高分辨的處理方法,并對(duì)多散射點(diǎn)目標(biāo)的合成距離高分辨效果進(jìn)行了計(jì)算機(jī)仿真。 - Hence , this paper focuses on fast channel estimation algorithms for ofdm - cdma receivers . we use comb pilots to estimate the channel response , and propose a low - complexity discrete fourier transform based mmse channel estimator
采用梳狀導(dǎo)頻進(jìn)行信道估計(jì)，提出了一種低復(fù)雜度、基于離散傅立葉變換的最小均方誤差的信估計(jì)算法。 - Wavelet analysis have many advantages over discrete fourier transform by zoom - in and zoom - out capability . wavelet denoising in multi resolution approximation has been evolved to become very powerful tools for digital picture signal processing
去噪處理已成為研究重點(diǎn)。小波多分辨率逼近分析去噪已發(fā)展成為圖像處理的一個(gè)重要而有效的工具。 - 4 . by using a new interpolation method based on discrete fourier transform ( dft ) , we get the goal of high fidelity interpolation for seismic track , and the matching result of seismic and logging data is improved
該方法在插值過程中保證了地震信號(hào)原有的頻率成分不被改變，提高了井震數(shù)據(jù)的匹配精度，為地質(zhì)建模中初始模型的獲取開辟了一條新途徑。 - The major work implemented in this paper is presented as follows : ( 1 ) an improved discrete fast polar fourier transform algorithm ( called dpft for short ) is proposed which fast and effectively computes the 2d discrete fourier transform in polar coordinate systems
論文的工作主要包括：一、提出一種改進(jìn)的離散極坐標(biāo)付立葉變換( dpft )的快速算法，并在此基礎(chǔ)上，提出一種基于dpft的紋理分類算法。
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