Fig. 1. Characteristics of polarimetric imaging targets. (a1)(a2) S₀, S₁ and S₂ samples of different iron flakes; (b1)(b2) S₀, S₁ and S₂ samples of different bullets

Fig. 2. Flow charts of data processing. (a) Flow chart of data processing in CBAM; (b) flow chart of data processing in channel attention module; (c) flow chart of data processing in spatial attention module

Fig. 3. Flow charts of data processing in different modules. (a) Flow chart of data processing in convolution module; (b) flow chart of data processing in residual module

Fig. 4. Structural diagram of polarimetric imaging target classification network based on attention mechanism

Fig. 5. Experimental equipment and experimental environment. (a) SALSA polarization camera system; (b) outdoor shooting; (c) targets placed in grassland; (d) cropped target sample

Fig. 6. Experimental results for target classification in sandy area. (a) Classification accuracies of proposed method and traditional methods; (b) training losses of proposed method and traditional methods

Fig. 7. Experimental results for target classification in bare soil area. (a) Classification accuracies of proposed method and traditional methods; (b) training losses of proposed method and traditional methods

Fig. 8. Experimental results for target classification in grassland area. (a) Classification accuracie of proposed method and traditional methods; (b) training losses of proposed method and traditional methods