Fig. 1. Schematic of S-LFMCW coherent laser detection system

Fig. 2. Principle of coherent laser detection

Fig. 3. Principle of S-LFMCW ranging

Fig. 4. Static target

Fig. 5. Detection results of static target

Fig. 6. Data fusion results of static target

Fig. 7. Comparison of static ranging deviations under different conditions. (a) S-LFMCW coherent laser detection system; (b) data fusion(Q=Q₁); (c) data fusion(Q=Q₂); (d) data fusion(Q=Q₃)

Fig. 8. Experimental diagram of dynamic target detection

Fig. 9. Experimental results of simple harmonic motion

Fig. 10. Experimental results of variably accelerated motion

Fig. 11. Experimental results of uniformly retarded motion

Fig. 12. Comparison of dynamic ranging errors under different conditions. (a) S-LFMCW coherent laser detection system; (b) data fusion (Q=Q₁); (c) data fusion (Q=Q₂); (d) data fusion (Q=Q₃)