MIMO Antenna Polynomial Weighted Average Design Method of Downward-Looking Array SAR

Table 1

3D topographic accuracy.

Mapping scale	Grid spacing/m	MSE of flat ground/m	MSE of hills/m	MSE of mountains/m	MSE of high mountains/m
1 : 500	0.5	0.37	0.75	1.05	1.5
1 : 1000	1	0.37	1.05	1.5	3
1 : 2000	2	0.75	1.05	2.25	3