摘要
文中提出了一种面目标毫米波辐射特性的研究方法：在不同时间、条件下，对面目标进行测量取得了大量的天线温度数据，使用傅氏变换从天线温度中反演出视在温度，剔除目标的散射辐射温度的影响，得到目标的亮度温度。对目标的亮度温度数据进行二维曲线拟合得到目标的亮度温度与测量角度和目标表面物理温度的关系式。亦给出了用该方法得到的水泥路。
A research method of mm wave radiometric characteristics is introduced in this paper. A large amount of antenna temperature data are obtained through the repeated measurement of the targets under different conditions and at different time. Apparent temperature is obtained from antenna temperature through the inversion of the integral equation by Fourier transform. The radiance temperature is obtained from apparent temperature by eliminating the scattered radiometric temperature. The formulas of radiance temperature for the targets with respect to incident angle and surface physical temperature are established through two dimensional curve fitting of radiance temperature. The formulas established by this method for concrete road, asphalt road and crushed stone road are presented.
出处
《红外与激光工程》
EI
CSCD
1998年第4期50-53,共4页
Infrared and Laser Engineering
关键词
面目标
辐射特性
亮度温度
毫米波
微波
Extended target\ \ Radiometric characteristics\ \ Radiance temperature
