| 1. | An estimation of brightness temperature for vegetated surface by matrix doubling method and iem
用双矩阵法和积分方程模型估算地表的亮度温度 |
| 2. | There are three mathematical models of multi - spectral thermometry based on calibration factor , brightness temperature and reference temperature respectively
多光谱辐射测温法的数学模型有基于检定常数的数学模型、基于亮度温度的数学模型和基于参考温度的数学模型。 |
| 3. | The ten - wavelength pyrometer is developed for the demand of china jiliang university . the mathematical model is based on brightness temperature . the data is processed with least square fitting and the software is programmed with vc + +
本课题是应中国计量学院要求设计的一台十波长高温计,采用的是基于亮度温度的数学模型,数据处理采用最小二乘拟合方法,软件采用vc + +编写。 |
| 4. | The resulting brightness temperature ( tb ) , hydrometeor structure , and surface rainfall rate relations show that the ice hydrometeor , espatially the ice at the top of the precipitating cloud , decreases the brightness temperature significantly at 85
结果表明，在85 . 5ghz ，冰相水汽凝结体尤其是处于降水云顶部的冰晶粒子由于散射辐射而使得亮温显著降低。亮温与冰相粒子的含量之间有很强的相关性。 |
| 5. | To improve the measuring precision of true temperature and spectral emissivity , the dissertation brings forth the new ideas and work as follows : ( 1 ) a brightness temperature approach is proposed and used for the measurement of the true temperature and spectral emissivity
为了提高目标真温和光谱发射率的测量精度,本课题主要研究工作如下: ( 1 )提出了基于亮度温度模型的亮温逼近法的多光谱数据处理方法,以求取目标真温及光谱发射率。 |
| 6. | The brightness temperature is highly related to the density of ice hydrometeor . since the convective cloud system is tilted , and the viewing angle is oblique , the area displacement between ice hydrometeor and the surface rainfall rate makes the relation between tb and surface rainfall rate is relatively small
但亮温和地面降水强度之间的相关性较弱，这是由于该对流系统为倾斜的，冰相粒子和地面降水强度之间存在着位置上的不一致，并且观测角为倾斜的。 |
| 7. | ( 5 ) parameterization of infrared satellite cloud imagery and its application in rainfall predication obvious correlation exist between the probability of rain and parameterization estimate such as average brightness temperature ( tb ) , brightness temperature variance ( f ) , equivalent cloudage ( cn ) , brightness temperature area index ( al - the first a5 - the fifth grade , a6 - the sixth grade )
( 5 )卫星云图参数化及在降雨预测中的应用红外卫星云图参数化估计值，与局地降雨过程的发生、发展具有较为密切的关系。相关较密切的参数有平均亮温、亮温方差、等效云量、亮温面积指数( 1级、 5级、 6级) 。 |
| 8. | ( 3 ) the effects of the random noise on the measured results , which are based on brightness temperature approach method and continuous measurement method , are evaluated . the experiment results demonstrate that the effect on brightness temperature approach method is uncertain and continuous measurement method can bear certain random noise
在某一温度点下的各通道理论测量值加入一定的随机噪声,试验结果表明:亮温逼近法受随机噪声的影响是不确定的,而连续测量法可以承受一定的随机噪声影响。 |
| 9. | ( 2 ) a continuous measurement method based on brightness temperature is proposed by processing the measured data of the multiwavelength pyrometer at two different times , the true temperatures and spectral emissivities at two different times can be calculated simultaneously . the experimental results show that this method improves the measurement precision of true temperature and spectral emissivity
( 2 )提出了基于亮度温度模型的连续测量法,通过处理多波长温度计两个不同温度处的测量数据,可以同时求得两个不同温度处被测目标的真温及光谱发射率,试验表明:该方法可以提高计算精度。 |
| 10. | ( 4 ) the feasibility of applying of brightness temperature approach method and continuous measurement method in practical application are verified . the results of 8 - wavelength thermometer , which are based on the brightness temperature model , verify that continuous measurement method based on brightness temperature is a practical data processing method when the range of target ’ s emissivity is known . the
分别利用亮温逼近法和基于亮温模型的连续测量法对基于亮度温度模型的八波长实测数据进行仿真,利用基于参考模型的连续测量法对固体火箭发动机羽焰温度实测数据进行仿真,其结果验证了连续测量法在工程实际中应用的可能性,并进一步验证了当所给发射率范围越接近实际物体发射率,计算结果越接近真温。 |
