在说这两个公式之前，先说说天线的增益。 输入到天线的功率Pin和天线辐射出去的功率Prad之间，会存在一个损耗。 这两个功率之间的比值，称之为辐射效率[1]。 天线的定向性是在远场区的某一球面上最大辐射功率密度与球面上的平均功率密度之比[1]。 天线 ...

SIAM Journal on Applied Mathematics, Vol. 59, No. 6 (Aug. - Oct., 1999), pp. 2060-2085 (26 pages) The shape-from-shading (SFS) equation relating u(y, r), the unknown ...

In the previous entries of this blog dedicated to automotive radar, the reason for using radar and the principle of operation of the frequency modulated continuous wave radar were presented. Now, we ...