Fig.1

Flow chart for the realization of parametric modeling automation of the scattering center of complex targets"

Fig.2

SLICY target partition diagram"

Fig.3

Flow chart of forward automatic calculation of frequency dependent parameters"

Fig.4

Local coordinate system on the surface"

Table 1

Principal radius of curvature of the three basic types of surfaces  m"

几何结构	几何尺寸	主曲率半径1	主曲率半径2	判定曲面类型
	长: 6 宽: 8	∞	∞	平板
	底面半径: 4 高: 8	有限值(4)	∞	单弯曲曲面
	半径: 3	有限值(2.98)	有限值(3.05)	双弯曲曲面

Fig.5

Schematic diagram of a distributed scattering center formed by a cylinder(a uniformly divided cylinder)"

Fig.6

Schematic diagram of distributed scattering center formed by cylinder(simulated SAR image)"

Fig.7

Flow chart of automatic forward calculation of length parameter"

Fig.8

Schematic diagram of target geometry model"

Fig.9

Schematic diagram of part number after initial geometric model decomposition"

Table 2

Radar imaging parameter description"

Table 3

Simplify the extraction results of strong scattering sources for tank targets(θ=60°, φ=90°, f=9 GHz)"

Fig.10

The simplified tank reconstruction SAR image is compared with the darkroom measurement image"

Fig.11

T72 target geometric model partition diagram"

Fig.12

Screenshot of the parameterized model results of the T72 target geometry model"

Table 4

Radar imaging parameter description"

Fig.13

T72 target parameterized model reconstructed SAR image compared with MSTAR library, θ=73°, φ=60°, similarity 75.68%"

Fig.14

The SAR image reconstructed by the T72 target parameterized model is compared with the MSTAR library image, θ=73°, φ=159°, the similarity is 73.81%"

Fig.15

BTR target geometric model partition diagram"

Table 5

BTR target strong scattering source extraction result, θ=73°, φ=234°, f=9.6 GHz"

Fig.16

BTR target model reconstructed SAR image compared with MSTAR library image, the similarity is 76.74%"

Table 6

Comparison of reconstructed SAR image with T72 target scattering center model and simulated SAR image"

雷达姿态	重构SAR图像与仿真SAR图像	相似度
θ=73°, φ=45°		94.33%
θ=73°, φ=90°		72.58%
θ=73°, φ=180°		95.62%