欠采樣 的英文怎麼說
中文拼音 [qiàncǎiyàng]
欠采樣
英文
undersampling-
It points out that the uwb signal can be reconnoitered efficiently with sub - sampling method. 3
說明了利用欠采樣方法對超寬帶線性調頻信號偵察的可行性。A doa estimation algorithm for coherent signal based on the fourth - order cumulant
時空欠采樣寬頻段信號頻率和二維角估計方法Emulational research on undersampling system
欠采樣系統的模擬研究Application of under - sampling in software radio design
欠采樣在軟體無線電設計中的應用Study on undersamping techniques based on software radio
基於軟體無線電的欠采樣技術研究Non - nyquist sampling method research on extent modulate wave signal
幅度調制波信號的欠采樣方法研究Application of bandpass undersampling principle in software radio
帶通欠采樣定理在軟體無線電中的應用The implications of this analysis are extremely important in undersampling applications
這個分析的意義在欠采樣應用中是非常重要的。This thesis deals with some problems of array signal processing in spatial - temporal undersampling
本論文研究空間和時間欠采樣情況下陣列信號處理問題。Uniform undersampling technique of bandpass signal and its engineering application in software digital if receiver
帶通欠采樣技術及在數字中頻軟體接收機中的工程應用The dm642 uses a two - level cache - based architecture, level 1 cache is composed of a 16 - kbit l1p ( level 1 program cache ) and a 16 - kbit l1d ( level 1 data cache ), level 2 cache consists of 256 - kbit memory space that is shared between program and data space
同時,研究了消除欠采樣噪聲演算法,並實現其處理功能。本文提出的系統設計方案,實現了高速、穩定、靈活的視頻採集處理播放平臺,可以高速而穩定的持久運行,達到了設計的要求。Embedded technologies, multi - way technologies and sampling technologies are used to reduce the sampling rate by software, so that the system can provide appropriate image format according to the condition of network and can eliminate aliasing noise. the system also uses motion detection to control the frame rate. therefore, the system can save transmission bandwidth effectively and design to provide multiple degrees qos according to the network condition
本方案採用了嵌入式技術和多路技術,並從采樣技術入手,軟體調整采樣率,使得系統能夠根據網路狀態提供適當格式的圖像,消除欠采樣噪聲,而且通過運動檢測來控制幀率,從而可以有效地節省傳輸帶寬,達到根據網路情況自適應地提供多種qos服務等級的目的。Based on the analysis of solving ambiguity, the thesis presents several algorithms for estimating doa and an algorithm for estimating frequency by using methods of subspace parameter estimation under sub - nyquist spatio - temporal sampling condition
論文在分析解模糊思想的基礎上,給出空時欠采樣下運用子空間類參數估計方法估計波達方向的幾種演算法和一種頻率估計演算法,並從性能上進行了比較和分析。As a result, digital images usually suffer from aliasing due to undersampling, loss of high - frequency detail due to relative motion or out - of - focus. supperresolution involves up - conversion of the input sampling lattice as well as reducing or eliminating aliasing and bluring
因此,通常數字圖像因欠采樣( undersampling )而引起的信號混疊,因低解析度傳感點擴散( psf : pointspreadfunction )而造成的高頻部分、丟失,以及因相對運動或散焦造成的光學模糊等因素而受損。On the basis of the former research works, we present the detecting method as follows : for the narrow band characteristic of the track signal we use under - sampling instead of nyquist sampling to reduce the sampling rate. as to the carrier frequency, the spectrum of the 18 - information frequency - shift track signal has two peaks, then the carrier frequency is the average of the two peak frequency, to um - 71 jointless track signal, it has only one peak, then the carrier frequency is the peak frequency
針對移頻軌道信號的窄帶特性提出了使用欠采樣技術代替奈奎斯特采樣的方法,以降低信號的采樣頻率;國產18信息移頻軌道信號頻譜具有雙峰,雙峰頻率平均值就是信號的載頻頻率,而um - 71無絕緣軌道信號頻譜單峰,峰值頻率即為信號的載頻頻率。This paper researches and improves two important algorithms to reconstruct high resolution images, with reduced aliasing, from a sequences of undersampled rotated and shifted frames. the reconstructed image resolution is from two to four times higher than the undersampled frames
本文研究和改進了運動補償迭代演算法和共軛梯度最優化迭代演算法,從欠采樣圖像序列中復原出高解析度的圖像,使被重建圖像的解析度比欠采樣幀提高了2 ~ 4倍。In these data, there are considerable image data of the same area. but limitted by the manufacturing process of imagery equipment, these images are the undersampled of scene
但由於成像設備硬體製造技術方面的原因,使得所獲取的數字影像是地面信息的欠采樣,從而得不到理想的高解析度的圖像。The effects of sampling clock jitter on signal - to - noise ratio ( snr ) and effective bit ( enob ) performance discussed in section 3 are even more dramatic in undersampling applications because of the higher input signal frequencies
在第三章討論的采樣時鐘抖動對信噪比和有效位性能的影響在欠采樣應用中因為更高的輸入信號頻率顯得更有戲劇性。At the same time the case of coherent signal sources is also discussed and an algorithm for estimating 1 - d angle - of - arrival from under - sampled data is proposed in the thesis. moreover, a system of digital signal processing receiver using spatio - temporal undersampling technique is described and some practical problems are also discussed
在理論分析的基礎上,結合某實際研究項目,論文給出了基於空時欠采樣條件下一種偵察測向數字信號處理機的硬體實現,並就工程實現中的一些問題進行了討論。In prototype system, a l - shaped non - uniform linear array with 5 elements is utilized to receive spatial signal with carrier frequency among 2 - 18ghz. the entire frequency band is decomposed into 1ghz sub - bands and then is mixed to 1ghz base band. the base band output of each antenna is sent through a synchronous 250mhz undersampling channels
在本實驗系統中,我們設計了一個5陣元的l型非均勻陣列天線,將的頻段劃分成的子頻段,然後將每個子頻段混頻到的處理基帶后再進行的同步欠采樣。分享友人