unwrapping 中文意思是什麼

The algorithms estimate the doa of the broadband distributed source fron the secondary diagonal elements of the covariance matrices generated from every frequency domain of the received broadband signals, thus avoiding unwrapping of phases

該類演算法首先將陣列接收的寬帶信號變換到頻率域，然後對于每個頻率形成陣列接收信號協方差陣，最後由該協方差陣的次對角線元素估計寬帶分佈源的到達角，其主要特點是避免了相位展開。

Secondly, in phase unwrapping to overcome the spread of wrong point, changing the patch of unwrapping phase is done to improve the correctness of it. then, the relation between the unwrapping phase and the height of reconstructed object is discussed detailedly. the data processing, algorithm analysis and reconstructing object are done for the collecting fringe image which are all based on matlab language, in all these achievements, the improvement and innovation aspect are following : a ) in order to stabilize the interference fringe, a new equivalent shifting object method is presented by using fringe stabilizing device to stabilize the interference fringe though moving object and ccd camera which fixed on a precise moving platform together, the experimental result shows the fringe drift is less than a / 20 in five minutes, and the equivalent phase shifting precision is x / 100

論文在全面闡述了光學三維輪廓位相測量術的發展、應用現狀、研究熱點及未來發展趨勢的基礎上，簡要介紹了傅立葉變換和相移位相輪廓測量術的基本原理，對兩種測量方法存在的問題及誤差進行詳細分析和比較；針對位相解包裹錯誤點的傳播問題，作者通過改變解包裹路徑來提高位相解包裹的正確性；分析討論從解包裹位相（ x ， y ）到再現物體的高度h （ x ， y ）物理量之間的關系，研究相應的演算法，利用matlab平臺，對實際採集的條紋圖像進行處理和輪廓重構，其中改進及創新工作主要表現在以下兩個方面： （ a ）針對干涉型結構光場干涉條紋出現的漂移抖動對相移的影響，提出了一種用條紋穩定器穩定干涉條紋，用精密移動平臺使物體和ccd攝像頭同步移動實現等效相移的方法，建立了相應的測量系統，系統的條紋穩定可以達到。

The software has realized the techniques presented before and has other functions, such as the simulation of a disk under diametral compression, various error analysis, phase unwrapping, real - time display of image information, and so on

附加功能還有對徑壓縮圓盤理論模擬模擬、各種誤差分析、相位去包裹和圖像信息實時顯示等，它為今後進一步開發奠定基礎。

3 ) for weak noise interferogram or filtered interferogram, dyadic wavelet can be used to detect fringe edges. a gvf snake model was used to link discrete edges, the linked edges were kept well accordance with fringes of phase map. 4 ) phase unwrapping algorithm based on edge detection is suitable to well separated fringes, the unwrapped phase can be rewrapped to the original phase map

4 ）對于低噪聲情況下或濾波后的干涉條紋圖，在基於邊緣檢測的相位解纏過程中，利用snake模型可以高效準確的實現邊緣點的連接，所連接的邊緣線與干涉條紋很好的吻合，可將連線的精度控制在三個像元。

A region growing phase unwrapping algorithm based on local frequency estimation for interferometric sar

一種局部頻率估計的區域生長相位展開方法

After the algorithms of phase unwrapping is studied, a new phase unwrapping method with flexible marking points is proposed. thus, the effects of noise, height mutation and also shadow can be avoided

研究了相位展開演算法，提出了基於邊緣檢測的柔性多標記點解相方法，克服了傳統解相方法在遇到噪聲時的不足之處，初步解決了高度突變、陰影對相位展開的影響。

Unwrapping the tissue paper from the small bouquet i carried, i placed the lily of the valley in the vase, thrust the paper in the pocket of my raincoat, rose from my knees and walked rapidly away

我打開包裝紙，將帶來的一束鈴蘭插進花瓶，順手將包裝紙塞進雨衣口袋，爾后從地上爬起來，匆匆而去。

Application of temporal phase unwrapping method in phase measurement profilometry

基於時間相位展開演算法的相位測量輪廓術

Analysis of the method about phase unwrapping of multi - baseline insar

多基線相位解纏方法分析。

2. research on the method about phase unwrapping of single - baseline insar and improvement

單基線相位解纏方法研究，並對常用演算法進行改進。

Finally, we suggest the future experiments in filtering and phase unwrapping according to the simulation results

最後，根據實驗模擬結果對濾波和相位解纏中存在的問題提出了進行下一步研究的建議。

After many years of development, various methods of phase unwrapping has been created, each having its advantages and disadvantages as well

經過多年的研究發展，相位解纏演算法多種多樣，各有優點和缺點。

This thesis offers a brief introduction about these widely adopted methods and the improvement of them which enhances the precision or speed of unwrapping. 3

介紹廣泛採用的單基線相位解纏方法並對某些演算法進行改進，以提高解纏精度或者解纏速度。

This thesis, with the distributed space - borne insar height measuring system as its background technology, is mainly about the systematic research the phase unwrapping, a key step in data processing of insar, especially the method of it on multi - baseline condition

本文以分散式星載insar測高系統為背景，系統地研究insar數據處理中的相位解纏這一關鍵步驟，分析在多基線情況下的相位解纏方法。

On the basis of the chavacteristic that the interferometric fringes have minimum gradient in the tangent direction, this paper employs the spin filtering with curved windows along the fringe tangent direction for interferometric phase images, and its feasibility and efficiency in keeping the fringe information, suppression the noise and improving the unwrapping precision are proved through comparing the different filtering methods and the corresponding phase unwrapping results

文中根據干涉條紋在切線方向變化最小的特點，利用沿切線方向的曲線窗口對干涉相位圖進行旋濾波降噪，並通過對比不同的濾波結果及相應相位解纏結果，證明了旋濾波在保持條紋結構信息，消除噪聲和提高相位解纏精度應用中的可行性和有效性。

Chapter four illustrates the problems of two dimensional phase unwrapping of single and multi - baseline, and again proves the importance of filtering in improving the quality of interferometric phase images and the unwrapping result through comparing the corresponding noisy and filtering phase unwrapping results

第四章研究了單、多基線二維相位解纏問題，通過濾波前後干涉相位圖的解纏結果對比和精度分析，再次證明了濾波對于提高幹涉相位圖質量和改善相位解纏結果的重要性。

According to wideband mission data protocol, the paper finishs such work as identifying synchronization codes, inverting pseudo randomizer, unwrapping data packages. then, according to etm + mission data formats, imaging data and parameters used in calibration are extracted, and inputed into files

根據其寬波段任務數據協議和etm +任務數據格式，論文工作完成了數據的解同步、解擾、解包等步驟，並提取得到圖像數據和用於輻射及幾何校正的參數，最終輸入到相應文件中，生成零級產品。

Aerospace series - elements of electrical and optical connection - test methods - part 425 : unwrapping, solderless wrapped connections

航空航天系列.電氣及光學連接元件.試驗方法.第425部分:無釬焊纏繞接頭的退繞能力

First. adjust the fiber to get the interferogram, use the four - step phase shifting method control the change of phase, achieve phase shifting. in data processing, take the pzt ' linear influence into account, calibrae the pzt. unwrapping the phase, gain the continuity, get the actual phase. analyzing the data with zernike orthogonal methord, fit polynomials that are not orthogonal over the data points, through visual c + + program, obtain polynomial parameters. calculate the shape of the surface, compare the result with zygo, then achieve the better experimental result

首先，經光纖耦合輸出調整得到干涉圖，採用四步相移方法，控制干涉圖位相變化，實現相移；數據處理過程中，考慮壓電陶瓷的非線性影響，進行標定；對位相進行模式展開連續性處理，得到實際位相；用zernike多項式正交化方法分析，在離散點上處理數據，經visualc + +程序設計，得到多項式系數，計算出面形分佈，同zygo所得結果進行比較。

In accordance with the phase - shift miscalibration and detector nonlinearity, the error - compensating phase - shifting algorithms based averaging technique are proposed. and in order to solve the problems brought by traditional linearity scanning unwrapping algorithm, which leads to incorrect phase unwrapping, a correlative region algorithm for phase unwrapping is developed

針對相移器的相移不準給相位求解帶來的誤差，提出採用基於平均技術的誤差補償移相演算法；針對傳統線掃描位相去包絡演算法不能對含有較大噪聲的位相圖進行正確去包絡的問題，提出了區域相關位相去包絡演算法。