信息光学(第二版)部分重点习题解答,苏显渝主编,李继陶 曹益平 张启灿 编,科学出版社出版
解(1) )( 1 ) δ ( 2 x 3 ) rect (1 = rect ( 2 x
x 1 1 3 x 1 ) = ) δ ( x ) rect ( 2 2 2 2
3 1 1 x 2 .5 2 ) = rect ( ) 2 2 2
( 2 ) rect (
x + 1 x 1 ) rect ( ) 2 2 rect (
x α +1 rect ( ) 2
α 12
)
2 x
1 x+2 2 α 2≤ x≤0
x
1
2α
g( x ) =g( x ) =
∫
2+ x
02 x
dα = x + 2= 2 x
0≤ x≤2
∫
dα