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天线温度
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  antenna temperature
     ANTENNA TEMPERATURE MODEL OF 3MM COATING STEALTH MATERIAL
     3mm涂层隐身材料的天线温度模型
短句来源
     In this paper the correlation analysis is made between the antenna temperature of solar radio burst Observations at 9375MHZ-, 3653MHZ and 2902MHZ from November in 1981 to December in 1982 at Yunnan Observatory and that of the Sagamore Hill system of USAF. The results show that the r. m.
     本文将云台9375MHz、3653MHz和2902MHz1981年11月—1982年12月期间观测到的太阳天线温度同USAF的Sagamore Hill系统进行了相关分析。
短句来源
     Effect of Power-Nonlinearity in a Microwave Radiometer on Antenna Temperature Interpolated with Aperture Calibration
     微波辐射计的功率非线性对标定天线温度的影响
短句来源
     Research on Antenna Temperature Contrast to Motional Metal Target
     运动的金属目标的天线温度对比度的研究
短句来源
     This method has been used in the calibration of a 35GHz radiometer with horn antenna and an accuracy of ±1K was given for the antenna temperature.
     根据这一方法对装有喇叭天线的35GHz零平衡辐射计进行了定标,得到喇叭天线的天线温度精度为±1K.
短句来源
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  antenna radiometric temperature
     ANALYSIS ON THE ANTENNA RADIOMETRIC TEMPERATURE ERROR OF SPACEBORNE MICROWAVE RADIATION IMAGER
     星载微波辐射成像仪天线温度误差分析
短句来源
     The eff- ects due to the change of reference temperature with operation enviroment are treated too, and a correct formula is given, which is used to estimate measurement values of the antenna radiometric temperature under this con- dition.
     对参考温度因环境而变化所造成的影响也进行了讨论,并给出此种情况下天线温度测量值的正确推算式。
短句来源
     The formula of MWRI's antenna radiometric temperature accuracy is derived.
     详细分析了星载微波辐射成像仪的天线温度精度。
短句来源
     The antenna radiometric temperature accuracy of 18.7 GHz receive channel of MWRI is calculated.
     并估算了星载微波辐射成像仪的18GHz接收通道天线温度精度。
短句来源
  antennal temperature
     The formulas were gave about calculating antennal temperature contrast between the ship objects and sea background. On the 3mm and 8mm wave band, some calculated and measared data were obtained about radiative temperature curve in different background and the antennal temperature contrast of objects on the sea with mmw radiometer at different height. Otherwise, the research introduced practical test method and some applications about the mmw radiative sensing for the ship objects on the sea.
     讨论了海洋、天空及陆地等背景微波辐射特性 ,给出了计算船舶目标与海洋背景的天线温度对比度的公式 ,并给出 8mm及 3mm波段下几种背景的辐射温度曲线和不同高度下的海上目标的天线温度对比度的计算和测量数据 ,另外 ,介绍了毫米波辐射计探测海上船舶的实用的试验方法以及其应用前景。
短句来源
  “天线温度”译为未确定词的双语例句
     Imaging principles of a camera and a grand based millimeter wave radiometer were analyzed. Segmentation and recognition methods of optical images were discussed. The temperature and brightness relations between the terrain surface and sky were discussed .
     分析了照相机和地基毫米波辐射计的成像机理 ,讨论了光学图像的分割和识别方法 ,论述了地物表面温度亮温、视温、天线温度和天空温度之间的关系 ,并在此基础上提出了一种用可见光图像模拟生成毫米波辐射图像的方法 .
短句来源
     For the metal targets, the temperature contrast of the 3? mm antenna is higher than that of the 8? mm antenna because of its narrower beam width.
     卡赛格伦天线对金属板测量中,3mm辐射计比8mm辐射计可测得更高的天线温度对比度.
短句来源
     Conclusion:It was confirmed that UMC I C/D microwave electrode has good coagulated volume, effective congulation result, lower temperature on electrode surface and good preventing from adhesion.
     结论:UMCIC/ D 型天线对肝组织凝固形态好,凝固效果确切,天线温度低,抗粘性能强。
短句来源
     By analysing therelationship between the input-power of a square-law detector to and its output-voltage, and theequation relating the nonlinearity coefficient to the error of an antenna temperatur interpolated byan aperture calibration is presented in this paper.
     通过分析平方律检波器的输入功率与输出电压的关系,导出非线性系数与由口面定标法反演的天线温度误差的关系式。
短句来源
     is 0.15,that is S=0.15 Ta. The brightness temperature of the quiet sun is 10100±300K at 22GHz. On Juny 2,1990 the sum of the SVC emission fluxes of radio sources on the solar disk is 20sfu,which is about 2.4% of total radio emission from the solar disk at 22 GHz.
     (以sfu为单位,Ta。是宁静区辐射的太阳天线温度),相应的宁静太阳温度为10100土300K.1990年7月2日源区的SVC辐射计算结果表明:日面源区的SVC辐射总和为20sfu,约占日面总辐射的2.4%.
短句来源
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  antenna temperature
The upper limit for absorption in the H(93-95)α lines is Tal/Tac >amp;lt; 0.7%; absorption in the H(78-79)α lines with antenna temperature Tal = 25 mK, linewidth Δf = 5.3 ± 0.08 MHz, and Tal/Tac ≥ 0.3% has been detected.
      
We examine several effects which could significantly influence the in-flight main beam calibration using planet transit: the problems of the variability of the Jupiter's flux, the antenna temperature and passing of the planets through the main beam.
      
For Orion molecular cloud, PO (4, 4.5, 5-3, 3.5, 4) (e, f) lines are excitable at 196.305 and 196.500 GHz and each line would have antenna temperature less than 110 mK.
      
Finally, we estimate the antenna temperature and the luminosity of the fine-structure lines of [CI]609μ and [CII]158μ of the envelope of TX Psc, respectively.
      
Procedures for correcting antenna temperature measurements and retrieving the true brightness temperatures are developed for the Scanning Multichannel Microwave Radiometer (SMMR) flown on the Seasat-A and Nimbus-G satellites.
      
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A calibration method for the null-balancing microwave radiometer is described and its accuracy is discussed. This method has been used in the calibration of a 35GHz radiometer with horn antenna and an accuracy of ±1K was given for the antenna temperature. It has also been used to calibrate the same radiometer fitted with 800 mm and 368 mm diameter Cassegrain antenna.

本文论述了零平衡微波辐射计的定标方法及精度分析.根据这一方法对装有喇叭天线的35GHz零平衡辐射计进行了定标,得到喇叭天线的天线温度精度为±1K.文中还介绍了装有800mm和368mm直径卡塞格伦天线的同一幅射计的定标实验.

In this paper, data of the total flux observations of the sun at λ 3.2cm obtained in the Nanjing Univ. Department of Astronomy (N. U. A) during the years 1980—1981 have been analysed. Correlation analysis of the N. U. A. records as against TYKW(Toyokawa Obs., Nagoya Univ., Toyokawa, Japan) shows that in the course of one month, the relative residual standard deviation difference between the daily flux values amounts to ±1.06%- ±3.03%, giving a mean value ±1.867%. The accuracy of observed values is stable. The...

In this paper, data of the total flux observations of the sun at λ 3.2cm obtained in the Nanjing Univ. Department of Astronomy (N. U. A) during the years 1980—1981 have been analysed. Correlation analysis of the N. U. A. records as against TYKW(Toyokawa Obs., Nagoya Univ., Toyokawa, Japan) shows that in the course of one month, the relative residual standard deviation difference between the daily flux values amounts to ±1.06%- ±3.03%, giving a mean value ±1.867%. The accuracy of observed values is stable. The anologous results have been obtained from the error analysis. The mean ratio of solar flux densities between NUA9375 and TYKW9400 is linearly correlated with mean end temperature during a month. This indicates that observation values have a seasonal variation. Annual variation of the ratio is caused by the annual variation of back ground radiation, gain of the parabolaid antenna and atmospheric obsorption. The corrections to the antenna temperature caused by the absorption in a dark or awet day, pointing errors and gain shift have been obtained from the measurements and data analyses. They have been applied to the observed values. Comparing with the TYKW, One find that all the major bursts have been recorded with peak time deviation of ±0.15 min., and rms of relative peak intensity of ±20%.

本文分析了1980年和1981年两年间3.2厘米波太阳射电总辐射观测资料。以日本TYKW的3.2厘米波的每日流量密度作比对标准,相关分析表明,一月中各日间的相对剩余标准差为±1.06%—±3.03%,平均为±1.89%,观测精度稳定。并作了误差分析,结果类似。月平均比与月平均终端温度有线性相关,这表明观测值有周年季节性变化,这可能与背景辐射,天线增益,大气吸收的季节变化有关。我们从测量和资料分析中得出了阴雨吸收和指向误差,增益漂移等造成的天线温度修正值。并对实测值进行了改正。与TYKW的相应爆发比对,大爆发无遗漏,个别图形欠完整,记录幅度的均方差平均为±20%,峰值时刻的变幅为±O.15分。南京大学天文系射电观测小组自1979年以来参加了太阳活动第21周的峰年观测,现将1980年至1981年期间的观测资料作一分析。

In this paper, data of the total flux observations of the sun at λ 3.2cm obtained in the Nanjing Univ. Department of Astronomy (N. U. A) during the years 1980—1981 have been analysed. Correlation analysis of the N. U. A. records as against TYKW(Toyokawa Obs., Nagoya Univ., Toyokawa, Japan) shows that in the course of one month, the relative residual standard deviation difference between the daily flux values amounts to ±1.06%-±3.03%, giving a mean value ±1.867%. The accuracy of observed values is stable. The...

In this paper, data of the total flux observations of the sun at λ 3.2cm obtained in the Nanjing Univ. Department of Astronomy (N. U. A) during the years 1980—1981 have been analysed. Correlation analysis of the N. U. A. records as against TYKW(Toyokawa Obs., Nagoya Univ., Toyokawa, Japan) shows that in the course of one month, the relative residual standard deviation difference between the daily flux values amounts to ±1.06%-±3.03%, giving a mean value ±1.867%. The accuracy of observed values is stable. The anologous results have been obtained from the error analysis. The mean ratio of solar flux densities between NUA9375 and TYKW9400 is linearly correlated with mean end temperature during a month. This indicates that observation values have a seasonal variation. Annual variation of the ratio is caused by the annual variation of back ground radiation, gain of the parabolaid antenna and atmospheric obsorption. The corrections to the antenna temperature caused by the absorption in a dark or awet day, pointing errors and gain shift have been obtained from the measurements and data analyses. They have been applied to the observed values. Comparing with the TYKW, One find that all the major bursts have been recorded with peak time deviation of ±0.15 min., and rms of relative peak intensity of ±20%.

本文分析了1980年和1981年两年间3.2厘米波太阳射电总辐射观测资料。以日本TYKW的3.2厘米波的每日流量密度作比对标准,相关分析表明,一月中各日间的相对剩余标准差为±1.06%——±3.03%,平均为±1.89%,观测精度稳定。并作了误差分析,结果类似。月平均比与月平均终端温度有线性相关,这表明观测值有周年季节性变化,这可能与背景辐射,天线增益,大气吸收的季节变化有关。我们从测量和资料分析中得出了阴雨吸收和指向误差,增益漂移等造成的天线温度修正值。并对实测值进行了改正。与TYKW的相应爆发比对,大爆发无遗漏,个别图形欠完整,记录幅度的均方差平均为±20%,峰值时刻的变幅为±0.15分。南京大学天文系射电观测小组自1979年以来参加了太阳活动第21周的峰年观测,现将1980年至1981年期间的观测资料作一分析。

 
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