spectral channel 中文意思是什麼
spectral channel
解釋
光譜波道-
In contrast with the measurement of backscattered ultraviolet solar radiation onboard satellites, ir radiance measurements in 9. 6m spectral channel at various instruments onboard meteorological / environmental satellites allow ozone estimates during both day and night. in this paper, we use ir radiance measurements within 9. 6 im spectral channels from moderate resolution spectral radiometer ( modis ) and advanced tiros operational vertical sounder ( atovs ) to retrieve total column ozone based on the operational retrieval system of national satellite meteorological center. for validating retrieval results, both ground based observation and total ozone mapping spectrometers ( toms ) ozone measurements are used and atovs retrieval results are corrected after the validation
本文利用美國noaa衛星上的先進的大氣垂直探測器業務系統（ atovs ）儀器和地球觀測系統衛星（ eos ）上的中解析度成像光譜儀（ modis ）上的9 . 6 m臭氧探測通道的輻射測值，在國家衛星氣象中心業務反演軟體系統基礎上，反演出了兩種儀器探測的大氣臭氧總量，並且利用中國五個常規臭氧觀測站的資料和美國研製的臭氧總量測繪光譜儀（ toms ）反演的臭氧資料對兩種反演結果進行驗證分析，對atovs反演結果進行了訂正。 -
In chapter 4, the spectral characteristics and its application in optical add - drop multiplexer ( oadm ) and in multi - channel dispersion compensator of linearly chirped moir fiber grating are studied. according to the coupled - mode theory and considering the construction features, we derive the couple - mode equations that describe the mode interaction in this kind of grating
首先從耦合模理論出發，結合線性啁啾moir光纖光柵的結構特性，建立了分析線性啁啾moir光纖光柵的耦合模方程，通過數值求解耦合模方程，研究了線性啁啾moir光纖光柵的光譜特性和時延特性。 -
With dispersion, xpm can induce intensity fluctuations and timing jitter of the pulses in the receiver. it can also cause the spectral spreading of the channel so that crosstalk is introduced. all these effects put a tight limit on the capacity of the systems
它與色散共同作用，會導致接收端光脈沖的變形（強度起伏） 、光脈沖的時間抖動以及通道的頻譜擴展，這些後果都會限制系統的性能。 -
We have gotten the regulation of drawing the information from spilled oil and the methods of processing spilled oil through experimentation of the different thick oil spectral feature, disposing data from two kinds of satellite and composing satellite images of different channel
通過各種溢油不同厚度波譜試驗；對兩個系列衛星資料進行溢油提取試驗海上溢油波譜試驗。總結出原油、重柴油、輕柴油、潤滑油、煤油溢油信息提取規律和處理方法。 -
For different channel condition, the simulation analysis presented the time domain waveform, power spectral estimate and error rate plot
針對不同的通道條件，模擬分析給出了時域波形、功率譜估計和誤碼率曲線。 -
Analysis of a forward link cdma signal spectral regrowth and adjacent - channel power ratio
信號前向鏈路頻譜增生和鄰道功率比估計 -
From the research of ijf - oqpsk, we draw the conclusion that, compared with bpsk, qpsk and msk modems, in the band - limited and non - linear channel, it has nearly constant envelope, less spectral spreading, better pe performance and the less interference of the adjacent channel, et. so, it is more suitable for the satellite communication channel
通過對ijf ? oqpsk的分析研究可知，它相對于傳統的bpsk和qpsk調制方式，在帶限非線性通道下，具有包絡近似恆定，頻譜擴展小， eb no惡化小，對鄰道產生干擾弱等優點，因而它更適合於衛星通道。 -
The spectral analysis method should supply a way to access working parts performance and mole channel stability
頻譜分析方案可用於研究土壤工作部件的動態工作過程和評價其隨機受力性能等。 -
A design project based on signal channel space spectral estimation used to direct finding is proposed. in this system, it is simpler in hardware manufacture. on the other hand, some signal processing methods of space spectral estimation are used such as wavelet transform and dummy array in order to improve capability of the system doa in complex environment
為此，本文提出了基於單通道譜估計測向的方案，在硬體上簡化系統，降低設備製造難度；在軟體上利用現代信號處理技術進行研究分析，採用小波變換、虛擬陣元等方法來改進系統doa的性能。 -
Future mobile communications have to support the transmission of high rate data and multimedia applications in the radio spectrum, which is already extremely scarce. the basic idea of adaptive coded modulation is to maintain a constant throughput by varying the transmitted power level, symbol transmission rate, constellation size, coding rate or any combination of these parameters. thus, without sacrificing bit - error rate ( ber ), these schemes provide high average spectral efficiency by transmitting at high speeds under favorable channel conditions, and reducing throughput as the channel degrades
自適應編碼調制（ adaptivecodedmodulation ， acm ）的基本思想是在不犧牲系統傳輸性能（比如ber ）為代價的前提下，通過單獨改變發送功率、波特率、編碼方案、碼率、調制方式，或者是綜合改變前面所述的各種參數，在有利的通道條件下，獲得較大的吞吐量，當通道質量下將時，相應地降低傳輸速率，最終達到提高平均頻譜效率的目的。 -
This thesis studies in adaptive equalization problems, and put the emphases in various adaptive equalizers, channel model, etc. finally, the performance of the presented blind equalizer which are used in digital microwave radio channel are compared and evaluated. the results are of great important in the development of more spectral efficient digital microwave radio - links. the focus is set on low - complexity adaptive equalizers for implementation in digital microwave radio systems
本文圍繞著自適應均衡技術進行了深入的探討，重點研究了自適應均衡演算法、通道模型等問題，並針對幾種盲均衡演算法應用於數字微波無線通道的均衡性能進行了模擬和比較，其結果對于開發具有更高頻譜利用率的數字微波通信鏈路有著重要的指導意義。 -
A good base of using single - channel receiver to realize mobile space spectral estimation direction finding engineering and minitype system is proposed
該設計方案為空間譜估計測向的進一步工程化、小型化打下了良好的基礎。 -
These three methods are all based on the mspm, and thus can be combined to obtain simultaneously large channel number flatten spectral response and flat - field awg
在si基sio _ 2光波導製作技術的基礎上，進行了8通道以及16通道200ghz通道間隔的awg器件的實驗製作。 -
In this paper, based on the study of single channel deconvolution, we made a research in double channel deconvolution. there are three cases when we find its results by dfs algorithm. the first is that z transform expression of results have no polar on the identity circularity. the second is that denominator have zero on it while molecular have zero to counteract. the third is that z transform expression of results have polar on it, which is well known that deconvolution kernel has no spectral inverse
本文在對雙通道信號卷積反演求解時採用較為簡便的dfs演算法，在求解過程中會遇到的三類情況，第一類是解的z變換表達式在單位圓上無極點，第二類是z變換表達式分母有零點但分子有相應的零點作抵消，第三類是z變換表達式在單位圓上有極點（即稱之為卷積核無譜逆） 。
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