single frequency 中文意思是什麼
single frequency
解釋
單頻率-
The phase velocity basically tells you how fast a pure sine wave ( with a single frequency ) moves
相速度可以告訴我們一個純正弦波的傳播速度。 -
1. ) designing and completing the all - solid - state blue laser of single - frequency operation
1 ）設計完成了全固化單頻藍光激光器。 -
Second part - the main contribution and research results of this paper are focused on as follows : ( 1 ) how to use the measurements of a dual frequency gps receiver to determine the ionospheric delay correction model for single frequency gps of a local range ; ( 2 ) how to separate the instrumental biases with the ionospheric delays in gps observation ; ( 3 ) how to establish a large range grid ionosphere model and use the gps data of chinese crust movement observation network to investigate the change law of ionospheric tec of china area ; ( 4 ) how to improve the effectiveness of correcting ionospheric delays for waas ' s users under adverse conditions. ( 5 ) how to establish the basic theory and the corresponding framework of monitoring the stochastic ionospheric disturbance using gps ( 6 ) how to improve the modelling ability of ionospheric delay according to its diurnal, seasonal, annual variations based on gps ; ( 7 ) how to meet the demand of correcting the ionospheric delay of high - precision orbit determination for low - earth satellite using a single frequency gps receiver 1 extracting ( local ) ionospheric information from gps data with high - precision the factors are systematically described and analyzed which limit the precision of using gps data to extract ionospheric delays
二、具體研究工作的系統報告，主要集中在以下幾方面：研究如何利用單臺雙頻gps接收機的觀測信息確定電離層延遲改正模型，為小范圍的單頻用戶服務；研究如何實時分離gps觀測中的儀器偏差與電離層延遲；研究如何建立較大區域的電離層格網模型，進而初步設想利用中國地殼運動觀測網路深入研究我國領域的電離層的電子濃度變化規律；研究單頻用戶在不利條件下，如何更好地利用電離層延遲改正信息；研究利用gps監測隨機電離層擾動的基本理論和框架方案；研究如何綜合顧及電離層的周日、季節和年變化，進一步提高利用gps模擬電離層延遲的能力；研究如何實現星載單頻gps低軌衛星的精密測軌中的電離層延遲改正要求。 -
In this thesis, an arithmetic in single epoch without integer ambiguity resolution and cycle slip detection and repair is given for single frequency receiver. applying the arithmetic, we can get the same high positioning precision
應用此方法，不需要進行復雜的整周模糊度確定和周跳探測與修復等處理過程，而達到同樣的定位精度。 -
An efficient technique to facilitate gps single frequency phase ambiguity resolution
相位模糊度解算方法 -
Harmonics can be added to a wave which has a single frequency to produce a complex wave.
諧音加在單頻波上產生復波。 -
Stable single - frequency and linear - polarization erbium doped fiber ring laser
窄線寬單頻線偏振摻鉺光纖環形腔激光器 -
Single frequency source is usually used as local oscillator in communication system and radar system, also as a reference clock in digital circuits, so it is a extensive - applied technique
固定頻率源可以在在通訊系統和雷達系統中作為本機振蕩器，也可以作為數字電路的基準時鐘信號，因此得到了廣泛的應用。 -
The currently available satellites, however, are single polarization, single frequency sensors such as ers - 1 / 2, radarsat, and jers - 1. there is a need to develop a technique to estimate soil moisture information from these available data sources at both regional and local scales
傳統的測量方法，如重量法測量和時域反射計都是基於點的測量方法，需要實地操作和煩雜的后處理過程，而且無法在要求的時間精度范圍內得到地表土壤水分的空間分佈信息。 -
Laser - diode end - pumped solid - state laser has many advantages, including high efficiency, good beam quality, high frequency stability, narrow line width, long lifetime, compact configuration, convenient for using et al. especially, single - frequency solid - state laser sources are required for many fields of fundamental research and scientific application, such as gravity - wave detection, coherent laser radar, coherent communication and fiber sensing
激光二極體泵浦的固體激光器具有全固態、小型化、效率高、使用方便等優點而受大家的廣泛關注，尤其是實現單頻運轉的全固態激光器以其優良的頻率特性和輸出功率穩定性可廣泛應用在相干信息處理、頻率計量、量子光學、引力波測量和量子信息等研究領域。 -
Based on experimental research on electrical property of waterflooded rock we have found that variation of salinity has much effect on rock resistivity, and it makes that relation curves of complex resistivity and in - phase resistivity of rock under single frequency with water saturation are characteristic of u - style curve, just like relation curves of waterflooded rock resisitivity with water saturation, but salinity variation has little effect on rock dispersion property
摘要通過水淹巖石巖電特性的實驗研究發現，地層水礦化度的變化，對巖石電阻率幅值的影響較大，致使單一頻率下的巖石復電阻率幅值和同相電阻率也會象常規電阻率一樣，隨著含水飽和度的變化，出現" u "形曲線，而相對而言，地層水礦化度對巖石頻散特性的影響較小。 -
This paper introduces the development of fiber - optic mach - zehnder interferometer during measuring linewidth parameter of single - frequency lasers, and the experiment result has been given
摘要介紹了作者在測量單縱模激光器線寬參數的過程中，研製的馬赫曾德爾光纖干涉儀，並給出了實驗結果。 -
The position errors are measured by two dimension single - frequency laser interferometer, the pitch and yaw errors are tested using phase shifting interferometer with a resolution of 0. 1nm, the linearity along motion axis is investigated by autocollimator with 0. 01 " uncertainty
利用單頻激光干涉儀測試其運動定位誤差特性，相位偏移干涉法測試運動轉角誤差，光電自準儀測試其運動偏擺誤差。 -
Using single frequency network enhances mobile reception and no fine - tune of frequency is required
單一頻道可以覆蓋全港，流動接收及選臺更方便，不需微調頻率。 -
1 using single frequency network that enhances mobile reception and no fine - tune of frequency is required
單一頻道可以覆蓋全港，流動接收及選臺更方便，不需微調頻率。 -
Using single frequency network that enhances mobile reception and no fine - tune of frequency is required
（ １ ）單一頻道可以覆蓋全港，流動接收及選臺更方便，不需微調頻率。 -
Secondly, ground on the duct noise control, the delayed - lms algorithm, which is actulized easily, is brought forward, then the simulation on pc is achieved. it is shown from the computer simulation that for the single frequency noise, there will be a good effect when choosing the suitable parameters ; but for the narrowband noise, the effect will become worse with increasement of the bandwidth. this result is helpful to analyze the parameters influencing anc
結果表明： （ 1 ）隨著濾波器長度的增大，系統收斂速度變快； （ 2 ）隨著值的增大，系統的收斂速度增大，但是當值超過某一范圍時會引起系統的發散； （ 3 ）次級通路的延遲數與初級噪聲頻率有關； （ 4 ）對于窄帶信號， dlms演算法可以取得一定的降噪量，但是隨著窄帶信號帶寬的增大，降噪效果明顯變差。 -
The experiment results show that the single frequency noise can be reduced 7db ( a ), and the broad - band random noise can be reduced effectively in assigned frequency band
實驗對單頻噪聲取得了7db （ a ）的降噪效果，對寬頻噪聲則能在指定頻帶上取得較好的降噪效果。 -
The common frequency synthesizers may not meet the demand on frequency stability and accuracy. and some of them are just desirable at a single frequency, which only can be varied in narrower spectrum
於是出現了高穩定的晶體振蕩器作為標準信號發生器，但他們的頻率往往是單一的，只能在很小的范圍微調。 -
Project and error analysis about one way and single frequency non - coherent carrier wave velocity measurement
單程單頻非相干載波測速方案及測速誤差分析
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