Fig. 1. Coordinate system of photon ranging extended target

Fig. 2. Photon ranging system. (a) Schematic of photon ranging system; (b) experimental diagram of photon ranging system

Fig. 3. Experimental results of photon ranging of extended flat

Fig. 4. Laser pulse echo and photon echo probability distribution of extend targets. (a)(b) Extended flat; (c)(d) extended sphere; (e)(f) extended aspheric

Fig. 5. Distance drift error of extended targets. (a) Flat; (b) sphere; (c) aspheric

Fig. 6. Photon ranging error of extended targets